Native CLI 2.1.152 consumes 8 GB+ RAM on regex with bounded repetition over minified single-line input

Summary

The native ARM64 CLI binary (2.1.152) entered a runaway state — 8.2 GB physical RSS, single main thread at 100% CPU — when its in-process matcher processed a regex with bounded repetition over a UTF-8 byte-class alternation against a long single-line minified JS input. The same regex was rejected by ugrep (separate Bash invocation) with error: exceeds complexity limits; the Claude internal matcher had no equivalent guard.

Environment

macOS 26.2 (25C56), Apple Silicon (ARM64)
Claude Code CLI 2.1.152 (native binary, not Node)
Path: ~/.local/share/claude/versions/2.1.152
Parent: interactive zsh. Not running under any wrapper/supervisor.

Reproduction context

Reverse-engineering a minified, obfuscated JS bundle (~318 KB on disk, but a large fraction is a single long line — thousands of comma-separated minified identifiers + a base64 blob from a fraud-detection SDK). A grep with the following pattern was issued from within the session:

([\x80-\x8f][\x80-\xbf][\x80-\xbf]){0,180}

Invoked as ugrep via a Bash tool call, ugrep rejected the pattern:

ugrep: error: error at position 660
([\x80-\x8f][\x80-\xbf][\x80-\xbf]){0,180}
            exceeds complexity limits

But the same pattern reached Claude's own in-process matcher (likely via Grep-result rendering / highlight on tool output, which contained the failing pattern verbatim). After that, the binary went to ~8 GB RSS within seconds, all on the main thread.

Sample dump signature

sample against the runaway PID shows the classic catastrophic-backtracking profile:

One thread (com.apple.main-thread).
Deep self-recursion at offset 0x236d54 (recursive count ≥9 levels).
Hot leaf cluster 0x224a00..0x224e00 — ~1000 of 2243 samples concentrated there.
Heavy operator new / _free / _xzm_xzone_malloc churn.
Physical footprint 8.2 GB; virtual 416 GB (latter is normal address-space reservation, not the symptom).

Deep recursion + per-step allocation explosion on a single thread is exactly what a backtracking regex engine does on an adversarial input.

Killing was non-trivial

After kill -9 <pid>, "new" runaway processes kept appearing. Cause is not a Claude supervisor — several parallel claude sessions on the same workspace independently entered the same state. Noted so anyone reproducing doesn't get confused.

Expected behavior

One or more of:

A regex-runtime / backtracking-depth guard analogous to ugrep's complexity-limit refusal, returning an error instead of consuming unbounded memory.
A soft RSS cap with graceful abort + diagnostic message.
At minimum, a hard upper bound on per-match allocation that triggers a controlled crash with a hint, not silent multi-GB growth.

Full `sample` output

sample 2.1.152 (pid 88236), 1 ms interval

Analysis of sampling 2.1.152 (pid 88236) every 1 millisecond
Process:         2.1.152 [88236]
Path:            /Users/USER/*/2.1.152
Load Address:    0x102cec000
Identifier:      2.1.152
Version:         0
Code Type:       ARM64
Platform:        macOS
Parent Process:  zsh [88235]
Target Type:     live task

Date/Time:       2026-05-27 12:27:46.054 +0800
Launch Time:     2026-05-27 12:26:20.354 +0800
OS Version:      macOS 26.2 (25C56)
Report Version:  7
Analysis Tool:   /usr/bin/sample

Physical footprint:         8.2G
Physical footprint (peak):  8.2G
Idle exit:                  untracked
----

Call graph:
    2243 Thread_8368990   DispatchQueue_1: com.apple.main-thread  (serial)
      2243 start  (in dyld) + 7184  [0x188b0dd54]
        2243 ???  (in 2.1.152)  load address 0x102cec000 + 0xc825f0  [0x10396e5f0]
          2243 ???  (in 2.1.152)  load address 0x102cec000 + 0xc836e0  [0x10396f6e0]
            2243 ???  (in 2.1.152)  load address 0x102cec000 + 0xc83b80  [0x10396fb80]
              2243 ???  (in 2.1.152)  load address 0x102cec000 + 0x253690  [0x102f3f690]
                2243 ???  (in 2.1.152)  load address 0x102cec000 + 0x25abb8  [0x102f46bb8]
                  2243 ???  (in 2.1.152)  load address 0x102cec000 + 0x220e78  [0x102f0ce78]
                    628 ???  (in 2.1.152)  load address 0x102cec000 + 0x2231dc  [0x102f0f1dc]
                    + 188 ???  (in 2.1.152)  load address 0x102cec000 + 0x2296e8  [0x102f156e8]
                    + ! 105 ???  (in 2.1.152)  load address 0x102cec000 + 0x229e10  [0x102f15e10]
                    + ! 22 ???  (in 2.1.152)  load address 0x102cec000 + 0x229ce8  [0x102f15ce8]
                    + ! : 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x228354  [0x102f14354]
                    + ! : 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x22848c  [0x102f1448c]
                    + ! : 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x228374  [0x102f14374]
                    + ! : 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x228468  [0x102f14468]
                    + ! : 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x2287a8  [0x102f147a8]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2282dc  [0x102f142dc]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2282e4  [0x102f142e4]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2282f0  [0x102f142f0]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2282fc  [0x102f142fc]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22834c  [0x102f1434c]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22835c  [0x102f1435c]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228470  [0x102f14470]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2284d8  [0x102f144d8]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2284e0  [0x102f144e0]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2287ac  [0x102f147ac]
                    + ! 12 ???  (in 2.1.152)  load address 0x102cec000 + 0x229e04  [0x102f15e04]
                    + ! 7 ???  (in 2.1.152)  load address 0x102cec000 + 0x229ba8  [0x102f15ba8]
                    + ! 5 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a0e8  [0x102f160e8]
                    + ! 4 ???  (in 2.1.152)  load address 0x102cec000 + 0x229bb4  [0x102f15bb4]
                    + ! 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x229cd8  [0x102f15cd8]
                    + ! 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x229dfc  [0x102f15dfc]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x229b5c  [0x102f15b5c]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x229bc8  [0x102f15bc8]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x229bd0  [0x102f15bd0]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x229cc4  [0x102f15cc4]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x229d24  [0x102f15d24]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x229e18  [0x102f15e18]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x229e1c  [0x102f15e1c]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2287e4  [0x102f147e4]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2287e8  [0x102f147e8]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229b08  [0x102f15b08]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229b38  [0x102f15b38]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229b8c  [0x102f15b8c]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229b9c  [0x102f15b9c]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229bd8  [0x102f15bd8]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229be4  [0x102f15be4]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229cf0  [0x102f15cf0]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229cf4  [0x102f15cf4]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229d30  [0x102f15d30]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229da8  [0x102f15da8]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a0d4  [0x102f160d4]
                    + 185 ???  (in 2.1.152)  load address 0x102cec000 + 0x228c50  [0x102f14c50]
                    + ! 73 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a330  [0x102f16330]
                    + ! : 32 ???  (in 2.1.152)  load address 0x102cec000 + 0x2329a4  [0x102f1e9a4]
                    + ! : | 29 operator new(unsigned long)  (in libc++abi.dylib) + 52  [0x188e8da78]
                    + ! : | + 8 _xzm_xzone_malloc  (in libsystem_malloc.dylib) + 40,76,...  [0x188cf50b4,0x188cf50d8,...]
                    + ! : | + 7 malloc_type_malloc  (in libsystem_malloc.dylib) + 44,72,...  [0x188ce9160,0x188ce917c,...]
                    + ! : | + 4 _xzm_xzone_malloc_freelist_outlined  (in libsystem_malloc.dylib) + 764,352  [0x188cfaaf8,0x188cfa95c]
                    + ! : | + 4 _xzm_xzone_malloc_tiny  (in libsystem_malloc.dylib) + 12,104,...  [0x188cf918c,0x188cf91e8,...]
                    + ! : | + 2 <deduplicated_symbol>  (in libsystem_malloc.dylib) + 52,132  [0x188cf4c54,0x188cf4ca4]
                    + ! : | + 2 _xzm_xzone_malloc_freelist_outlined  (in libsystem_malloc.dylib) + 324  [0x188cfa940]
                    + ! : | + ! 1 _xzm_xzone_find_and_malloc_from_freelist_chunk  (in libsystem_malloc.dylib) + 344  [0x188cfb24c]
                    + ! : | + ! : 1 _xzm_xzone_malloc_from_freelist_chunk  (in libsystem_malloc.dylib) + 192  [0x188cfada4]
                    + ! : | + ! 1 _xzm_xzone_find_and_malloc_from_freelist_chunk  (in libsystem_malloc.dylib) + 1504  [0x188cfb6d4]
                    + ! : | + 2 _xzm_xzone_thread_cache_fill_and_malloc  (in libsystem_malloc.dylib) + 120  [0x188cfa794]
                    + ! : | 2 operator new(unsigned long)  (in libc++abi.dylib) + 8,36  [0x188e8da4c,0x188e8da68]
                    + ! : | 1 DYLD-STUB$$operator new(unsigned long)  (in 2.1.152) + 4  [0x1062ffec0]
                    + ! : 16 ???  (in 2.1.152)  load address 0x102cec000 + 0x232d58  [0x102f1ed58]
                    + ! : | 8 _xzm_free  (in libsystem_malloc.dylib) + 304,64,...  [0x188cf5874,0x188cf5784,...]
                    + ! : | 7 _free  (in libsystem_malloc.dylib) + 24,0,...  [0x188d02a44,0x188d02a2c,...]
                    + ! : | 1 _xzm_free  (in libsystem_malloc.dylib) + 348  [0x188cf58a0]
                    + ! : |   1 _platform_memset  (in libsystem_platform.dylib) + 140  [0x188edf11c]
                    + ! : 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x232928  [0x102f1e928]
                    + ! : 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x232950  [0x102f1e950]
                    + ! : 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x2329b4  [0x102f1e9b4]
                    + ! : 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x2329d0  [0x102f1e9d0]
                    + ! : 2 _xzm_free  (in libsystem_malloc.dylib) + 1340,1344  [0x188cf5c80,0x188cf5c84]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232990  [0x102f1e990]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2329e8  [0x102f1e9e8]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2329f8  [0x102f1e9f8]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232a30  [0x102f1ea30]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232a38  [0x102f1ea38]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232cb4  [0x102f1ecb4]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232cd8  [0x102f1ecd8]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232d20  [0x102f1ed20]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232d38  [0x102f1ed38]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232d40  [0x102f1ed40]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232d88  [0x102f1ed88]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232d9c  [0x102f1ed9c]
                    + ! 19 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a280  [0x102f16280]
                    + ! 15 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a174  [0x102f16174]
                    + ! 9 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a460  [0x102f16460]
                    + ! : 9 operator new(unsigned long)  (in libc++abi.dylib) + 52  [0x188e8da78]
                    + ! :   5 _xzm_xzone_malloc  (in libsystem_malloc.dylib) + 40,76,...  [0x188cf50b4,0x188cf50d8,...]
                    + ! :   3 malloc_type_malloc  (in libsystem_malloc.dylib) + 72,16  [0x188ce917c,0x188ce9144]
                    + ! :   1 <deduplicated_symbol>  (in libsystem_malloc.dylib) + 24  [0x188cf4c38]
                    + ! 6 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a394  [0x102f16394]
                    + ! : 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x2329a4  [0x102f1e9a4]
                    + ! : | 3 operator new(unsigned long)  (in libc++abi.dylib) + 52  [0x188e8da78]
                    + ! : |   3 <deduplicated_symbol>  (in libsystem_malloc.dylib) + 116,192  [0x188cf4c94,0x188cf4ce0]
                    + ! : 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x232d58  [0x102f1ed58]
                    + ! : | 1 DYLD-STUB$$free  (in libc++abi.dylib) + 8  [0x188e8de48]
                    + ! : | 1 _free  (in libsystem_malloc.dylib) + 44  [0x188d02a58]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232980  [0x102f1e980]
                    + ! 6 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a160  [0x102f16160]
                    + ! 5 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a29c  [0x102f1629c]
                    + ! 4 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a224  [0x102f16224]
                    + ! 4 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a31c  [0x102f1631c]
                    + ! 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a184  [0x102f16184]
                    + ! 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a248  [0x102f16248]
                    + ! 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a254  [0x102f16254]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a2cc  [0x102f162cc]
                    + ! : 1 operator new(unsigned long)  (in libc++abi.dylib) + 52  [0x188e8da78]
                    + ! : | 1 <deduplicated_symbol>  (in libsystem_malloc.dylib) + 108  [0x188cf4c8c]
                    + ! : 1 operator new(unsigned long)  (in libc++abi.dylib) + 36  [0x188e8da68]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a344  [0x102f16344]
                    + ! : 2 operator new(unsigned long)  (in libc++abi.dylib) + 52  [0x188e8da78]
                    + ! :   1 _xzm_xzone_malloc  (in libsystem_malloc.dylib) + 40  [0x188cf50b4]
                    + ! :   1 malloc_type_malloc  (in libsystem_malloc.dylib) + 28  [0x188ce9150]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a490  [0x102f16490]
                    + ! : 2 operator new(unsigned long)  (in libc++abi.dylib) + 36  [0x188e8da68]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a150  [0x102f16150]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a22c  [0x102f1622c]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a290  [0x102f16290]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a418  [0x102f16418]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a488  [0x102f16488]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x232f68  [0x102f1ef68]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a21c  [0x102f1621c]
                    + ! : 1 _xzm_free  (in libsystem_malloc.dylib) + 416  [0x188cf58e4]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a154  [0x102f16154]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a188  [0x102f16188]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a274  [0x102f16274]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a27c  [0x102f1627c]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a298  [0x102f16298]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a2d4  [0x102f162d4]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a2f4  [0x102f162f4]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a318  [0x102f16318]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a330  [0x102f16330]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a33c  [0x102f1633c]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a420  [0x102f16420]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a424  [0x102f16424]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a430  [0x102f16430]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x232f64  [0x102f1ef64]
                    + ! 1 _xzm_free  (in libsystem_malloc.dylib) + 1344  [0x188cf5c84]
                    + ! 1 operator new(unsigned long)  (in libc++abi.dylib) + 76  [0x188e8da90]
                    + 90 ???  (in 2.1.152)  load address 0x102cec000 + 0x22990c  [0x102f1590c]
                    + ! 67 ???  (in 2.1.152)  load address 0x102cec000 + 0x228a4c  [0x102f14a4c]
                    + ! : 50 ???  (in 2.1.152)  load address 0x102cec000 + 0x236d54  [0x102f22d54]
                    + ! : | 37 ???  (in 2.1.152)  load address 0x102cec000 + 0x236d54  [0x102f22d54]
                    + ! : | + 18 ???  (in 2.1.152)  load address 0x102cec000 + 0x236d54  [0x102f22d54]
                    + ! : | + ! 12 ???  (in 2.1.152)  load address 0x102cec000 + 0x236d54  [0x102f22d54]
                    + ! : | + ! : 5 ???  (in 2.1.152)  load address 0x102cec000 + 0x236d54  [0x102f22d54]
                    + ! : | + ! : | 4 ???  (in 2.1.152)  load address 0x102cec000 + 0x236d54  [0x102f22d54]
                    + ! : | + ! : | + 4 ???  (in 2.1.152)  load address 0x102cec000 + 0x236d54  [0x102f22d54]
                    + ! : | + ! : | +   3 ???  (in 2.1.152)  load address 0x102cec000 + 0x236d54  [0x102f22d54]
                    + ! : | + ! : | +   ! 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x236d54  [0x102f22d54]
                    + ! : | + ! : | +   !   1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2369c4  [0x102f229c4]
                    + ! : | + ! : | +   !   1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236eac  [0x102f22eac]
                    + ! : | + ! : | +   !   1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236f00  [0x102f22f00]
                    + ! : | + ! : | +   1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236cbc  [0x102f22cbc]
                    + ! : | + ! : | 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236fb4  [0x102f22fb4]
                    + ! : | + ! : 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x2369d4  [0x102f229d4]
                    + ! : | + ! : 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x236fd8  [0x102f22fd8]
                    + ! : | + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236d1c  [0x102f22d1c]
                    + ! : | + ! : | 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x237390  [0x102f23390]
                    + ! : | + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236f08  [0x102f22f08]
                    + ! : | + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236fd4  [0x102f22fd4]
                    + ! : | + ! 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x236fb4  [0x102f22fb4]
                    + ! : | + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2369f4  [0x102f229f4]
                    + ! : | + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236a20  [0x102f22a20]
                    + ! : | + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236c58  [0x102f22c58]
                    + ! : | + 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x236d1c  [0x102f22d1c]
                    + ! : | + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x237118  [0x102f23118]
                    + ! : | + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2372d8  [0x102f232d8]
                    + ! : | + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x237300  [0x102f23300]
                    + ! : | + 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x236c58  [0x102f22c58]
                    + ! : | + 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x236cbc  [0x102f22cbc]
                    + ! : | + 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x236cc8  [0x102f22cc8]
                    + ! : | + 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x236cd4  [0x102f22cd4]
                    + ! : | + 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x236fd8  [0x102f22fd8]
                    + ! : | + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236a18  [0x102f22a18]
                    + ! : | + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236eac  [0x102f22eac]
                    + ! : | + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236eec  [0x102f22eec]
                    + ! : | + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236f00  [0x102f22f00]
                    + ! : | + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x237100  [0x102f23100]
                    + ! : | 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x236cbc  [0x102f22cbc]
                    + ! : | 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x236c78  [0x102f22c78]
                    + ! : | 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2369c4  [0x102f229c4]
                    + ! : | 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2369c8  [0x102f229c8]
                    + ! : | 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236ca0  [0x102f22ca0]
                    + ! : | 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236cc8  [0x102f22cc8]
                    + ! : | 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236cd4  [0x102f22cd4]
                    + ! : | 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236e8c  [0x102f22e8c]
                    + ! : | 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2370bc  [0x102f230bc]
                    + ! : | 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x237110  [0x102f23110]
                    + ! : 5 ???  (in 2.1.152)  load address 0x102cec000 + 0x236cbc  [0x102f22cbc]
                    + ! : 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x2369ec  [0x102f229ec]
                    + ! : 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x236c58  [0x102f22c58]
                    + ! : 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x236c78  [0x102f22c78]
                    + ! : 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x236cd4  [0x102f22cd4]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236a54  [0x102f22a54]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236c54  [0x102f22c54]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x236cc8  [0x102f22cc8]
                    + ! : 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2370bc  [0x102f230bc]
                    + ! 10 ???  (in 2.1.152)  load address 0x102cec000 + 0x228a5c  [0x102f14a5c]
                    + ! 4 ???  (in 2.1.152)  load address 0x102cec000 + 0x2288fc  [0x102f148fc]
                    + ! 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x22890c  [0x102f1490c]
                    + ! 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x237110  [0x102f23110]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228a24  [0x102f14a24]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228a64  [0x102f14a64]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228aa0  [0x102f14aa0]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x23710c  [0x102f2310c]
                    + 39 ???  (in 2.1.152)  load address 0x102cec000 + 0x228d10  [0x102f14d10]
                    + 27 ???  (in 2.1.152)  load address 0x102cec000 + 0x228d20  [0x102f14d20]
                    + 27 ???  (in 2.1.152)  load address 0x102cec000 + 0x228d28  [0x102f14d28]
                    + 19 ???  (in 2.1.152)  load address 0x102cec000 + 0x228ba0  [0x102f14ba0]
                    + 7 ???  (in 2.1.152)  load address 0x102cec000 + 0x228c40  [0x102f14c40]
                    + 7 ???  (in 2.1.152)  load address 0x102cec000 + 0x228c60  [0x102f14c60]
                    + 4 ???  (in 2.1.152)  load address 0x102cec000 + 0x229828  [0x102f15828]
                    + ! 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x2284e0  [0x102f144e0]
                    + ! 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228468  [0x102f14468]
                    + 4 ???  (in 2.1.152)  load address 0x102cec000 + 0x2294e4  [0x102f154e4]
                    + 4 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a114  [0x102f16114]
                    + 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x228d4c  [0x102f14d4c]
                    + 3 ???  (in 2.1.152)  load address 0x102cec000 + 0x2294ec  [0x102f154ec]
                    + 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x228c70  [0x102f14c70]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228ba8  [0x102f14ba8]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228c64  [0x102f14c64]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228c74  [0x102f14c74]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228c80  [0x102f14c80]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228c90  [0x102f14c90]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228ce8  [0x102f14ce8]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228d24  [0x102f14d24]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228d2c  [0x102f14d2c]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x228d38  [0x102f14d38]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229468  [0x102f15468]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229610  [0x102f15610]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2296f4  [0x102f156f4]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229704  [0x102f15704]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2298bc  [0x102f158bc]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2298f4  [0x102f158f4]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22990c  [0x102f1590c]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a10c  [0x102f1610c]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a4c8  [0x102f164c8]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x22a4d0  [0x102f164d0]
                    434 ???  (in 2.1.152)  load address 0x102cec000 + 0x224aa8  [0x102f10aa8]
                    391 ???  (in 2.1.152)  load address 0x102cec000 + 0x224ac8  [0x102f10ac8]
                    189 ???  (in 2.1.152)  load address 0x102cec000 + 0x224ad4  [0x102f10ad4]
                    135 ???  (in 2.1.152)  load address 0x102cec000 + 0x224abc  [0x102f10abc]
                    99 ???  (in 2.1.152)  load address 0x102cec000 + 0x224a98  [0x102f10a98]
                    68 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b08  [0x102f10b08]
                    57 ???  (in 2.1.152)  load address 0x102cec000 + 0x224ae4  [0x102f10ae4]
                    47 ???  (in 2.1.152)  load address 0x102cec000 + 0x224afc  [0x102f10afc]
                    22 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b48  [0x102f10b48]
                    21 ???  (in 2.1.152)  load address 0x102cec000 + 0x224cc8  [0x102f10cc8]
                    + 19 operator new(unsigned long)  (in libc++abi.dylib) + 52  [0x188e8da78]
                    + ! 11 _xzm_xzone_thread_cache_fill_and_malloc  (in libsystem_malloc.dylib) + 120  [0x188cfa794]
                    + ! 3 <deduplicated_symbol>  (in libsystem_malloc.dylib) + 108,160,...  [0x188cf4c8c,0x188cf4cc0,...]
                    + ! 3 malloc_type_malloc  (in libsystem_malloc.dylib) + 16,72  [0x188ce9144,0x188ce917c]
                    + ! 2 _xzm_xzone_malloc  (in libsystem_malloc.dylib) + 40,316  [0x188cf50b4,0x188cf51c8]
                    + 1 DYLD-STUB$$operator new(unsigned long)  (in 2.1.152) + 4  [0x1062ffec0]
                    + 1 operator new(unsigned long)  (in libc++abi.dylib) + 36  [0x188e8da68]
                    13 ???  (in 2.1.152)  load address 0x102cec000 + 0x2231b0  [0x102f0f1b0]
                    + 9 gettimeofday  (in libsystem_c.dylib) + 56  [0x188d67d60]
                    + ! 8 __commpage_gettimeofday_internal  (in libsystem_kernel.dylib) + 44  [0x188e94c10]
                    + ! : 8 mach_absolute_time  (in libsystem_kernel.dylib) + 108,112  [0x188e930fc,0x188e93100]
                    + ! 1 __commpage_gettimeofday  (in libsystem_kernel.dylib) + 0  [0x188e94bdc]
                    + 2 DYLD-STUB$$gettimeofday  (in 2.1.152) + 4,8  [0x10630076c,0x106300770]
                    + 2 gettimeofday  (in libsystem_c.dylib) + 0,56  [0x188d67d28,0x188d67d60]
                    13 ???  (in 2.1.152)  load address 0x102cec000 + 0x224a5c  [0x102f10a5c]
                    10 ???  (in 2.1.152)  load address 0x102cec000 + 0x224c38  [0x102f10c38]
                    + 4 ???  (in 2.1.152)  load address 0x102cec000 + 0x229974  [0x102f15974]
                    + 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x22997c  [0x102f1597c]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229994  [0x102f15994]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2299bc  [0x102f159bc]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229a10  [0x102f15a10]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x229a14  [0x102f15a14]
                    8 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b3c  [0x102f10b3c]
                    + 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x222fc8  [0x102f0efc8]
                    + 2 ???  (in 2.1.152)  load address 0x102cec000 + 0x222fec  [0x102f0efec]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x222fb0  [0x102f0efb0]
                    + ! 1 operator new[](unsigned long)  (in libc++abi.dylib) + 0  [0x188e8daec]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x222f94  [0x102f0ef94]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x222fe0  [0x102f0efe0]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x222ff8  [0x102f0eff8]
                    8 ???  (in 2.1.152)  load address 0x102cec000 + 0x224e24  [0x102f10e24]
                    + 5 _xzm_free  (in libsystem_malloc.dylib) + 40,204,...  [0x188cf576c,0x188cf5810,...]
                    + 2 _xzm_free  (in libsystem_malloc.dylib) + 348  [0x188cf58a0]
                    + ! 1 __bzero  (in libsystem_platform.dylib) + 24  [0x188edf048]
                    + ! 1 _platform_memset  (in libsystem_platform.dylib) + 140  [0x188edf11c]
                    + 1 operator delete(void*)  (in libc++abi.dylib) + 0  [0x188e8b8e0]
                    7 ???  (in 2.1.152)  load address 0x102cec000 + 0x224af0  [0x102f10af0]
                    6 ???  (in 2.1.152)  load address 0x102cec000 + 0x224c70  [0x102f10c70]
                    5 ???  (in 2.1.152)  load address 0x102cec000 + 0x224e00  [0x102f10e00]
                    + 4 _xzm_free  (in libsystem_malloc.dylib) + 416,332,...  [0x188cf58e4,0x188cf5890,...]
                    + 1 _free  (in libsystem_malloc.dylib) + 12  [0x188d02a38]
                    5 ???  (in 2.1.152)  load address 0x102cec000 + 0x224a9c  [0x102f10a9c]
                    5 ???  (in 2.1.152)  load address 0x102cec000 + 0x224ab4  [0x102f10ab4]
                    5 ???  (in 2.1.152)  load address 0x102cec000 + 0x224aec  [0x102f10aec]
                    4 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b20  [0x102f10b20]
                    4 ???  (in 2.1.152)  load address 0x102cec000 + 0x224bc8  [0x102f10bc8]
                    3 ???  (in 2.1.152)  load address 0x102cec000 + 0x2249a4  [0x102f109a4]
                    + 2 gettimeofday  (in libsystem_c.dylib) + 56  [0x188d67d60]
                    + ! 2 __commpage_gettimeofday_internal  (in libsystem_kernel.dylib) + 44  [0x188e94c10]
                    + !   2 mach_absolute_time  (in libsystem_kernel.dylib) + 108  [0x188e930fc]
                    + 1 gettimeofday  (in libsystem_c.dylib) + 56  [0x188d67d60]
                    3 ???  (in 2.1.152)  load address 0x102cec000 + 0x2231b0  [0x102f0f1b0]
                    3 ???  (in 2.1.152)  load address 0x102cec000 + 0x224ac0  [0x102f10ac0]
                    3 ???  (in 2.1.152)  load address 0x102cec000 + 0x224ad8  [0x102f10ad8]
                    3 ???  (in 2.1.152)  load address 0x102cec000 + 0x224af8  [0x102f10af8]
                    3 ???  (in 2.1.152)  load address 0x102cec000 + 0x224c20  [0x102f10c20]
                    3 ???  (in 2.1.152)  load address 0x102cec000 + 0x224ce0  [0x102f10ce0]
                    2 ???  (in 2.1.152)  load address 0x102cec000 + 0x224d04  [0x102f10d04]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x1f7e60  [0x102ee3e60]
                    + 1 ???  (in 2.1.152)  load address 0x102cec000 + 0x1f7e84  [0x102ee3e84]
                    2 ???  (in 2.1.152)  load address 0x102cec000 + 0x224adc  [0x102f10adc]
                    2 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b00  [0x102f10b00]
                    2 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b60  [0x102f10b60]
                    2 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b68  [0x102f10b68]
                    2 ???  (in 2.1.152)  load address 0x102cec000 + 0x224bc0  [0x102f10bc0]
                    2 ???  (in 2.1.152)  load address 0x102cec000 + 0x224c94  [0x102f10c94]
                    2 ???  (in 2.1.152)  load address 0x102cec000 + 0x224d44  [0x102f10d44]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224a74  [0x102f10a74]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224a88  [0x102f10a88]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224ac4  [0x102f10ac4]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224acc  [0x102f10acc]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b04  [0x102f10b04]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b10  [0x102f10b10]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b2c  [0x102f10b2c]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b80  [0x102f10b80]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b94  [0x102f10b94]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224b9c  [0x102f10b9c]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224bc4  [0x102f10bc4]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224c2c  [0x102f10c2c]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224c78  [0x102f10c78]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224c84  [0x102f10c84]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224c90  [0x102f10c90]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224cb0  [0x102f10cb0]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224cb4  [0x102f10cb4]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224cc8  [0x102f10cc8]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224ce8  [0x102f10ce8]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x224e1c  [0x102f10e1c]
                    1 ???  (in 2.1.152)  load address 0x102cec000 + 0x2298e0  [0x102f158e0]
                    1 _xzm_free  (in libsystem_malloc.dylib) + 1344  [0x188cf5c84]

Total number in stack (recursive counted multiple, when >=5):
        9       ???  (in 2.1.152)  load address 0x102cec000 + 0x236d54  [0x102f22d54]
        7       _xzm_free  (in libsystem_malloc.dylib) + 0  [0x188cf5744]
        6       operator new(unsigned long)  (in libc++abi.dylib) + 52  [0x188e8da78]
        5       <deduplicated_symbol>  (in libsystem_malloc.dylib) + 0  [0x188cf4c20]
        5       operator new(unsigned long)  (in libc++abi.dylib) + 0  [0x188e8da44]

Sort by top of stack, same collapsed (when >= 5):
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224aa8  [0x102f10aa8]        434
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224ac8  [0x102f10ac8]        391
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224ad4  [0x102f10ad4]        189
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224abc  [0x102f10abc]        135
        ???  (in 2.1.152)  load address 0x102cec000 + 0x229e10  [0x102f15e10]        105
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224a98  [0x102f10a98]        99
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224b08  [0x102f10b08]        68
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224ae4  [0x102f10ae4]        57
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224afc  [0x102f10afc]        47
        ???  (in 2.1.152)  load address 0x102cec000 + 0x228d10  [0x102f14d10]        39
        ???  (in 2.1.152)  load address 0x102cec000 + 0x228d20  [0x102f14d20]        27
        ???  (in 2.1.152)  load address 0x102cec000 + 0x228d28  [0x102f14d28]        27
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224b48  [0x102f10b48]        22
        _xzm_free  (in libsystem_malloc.dylib)        22
        ???  (in 2.1.152)  load address 0x102cec000 + 0x228ba0  [0x102f14ba0]        19
        ???  (in 2.1.152)  load address 0x102cec000 + 0x22a280  [0x102f16280]        19
        _xzm_xzone_malloc  (in libsystem_malloc.dylib)        16
        ???  (in 2.1.152)  load address 0x102cec000 + 0x22a174  [0x102f16174]        15
        malloc_type_malloc  (in libsystem_malloc.dylib)        14
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224a5c  [0x102f10a5c]        13
        _xzm_xzone_thread_cache_fill_and_malloc  (in libsystem_malloc.dylib)        13
        ???  (in 2.1.152)  load address 0x102cec000 + 0x229e04  [0x102f15e04]        12
        ???  (in 2.1.152)  load address 0x102cec000 + 0x236cbc  [0x102f22cbc]        11
        <deduplicated_symbol>  (in libsystem_malloc.dylib)        10
        ???  (in 2.1.152)  load address 0x102cec000 + 0x228a5c  [0x102f14a5c]        10
        mach_absolute_time  (in libsystem_kernel.dylib)        10
        _free  (in libsystem_malloc.dylib)        9
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224af0  [0x102f10af0]        7
        ???  (in 2.1.152)  load address 0x102cec000 + 0x228c40  [0x102f14c40]        7
        ???  (in 2.1.152)  load address 0x102cec000 + 0x228c60  [0x102f14c60]        7
        ???  (in 2.1.152)  load address 0x102cec000 + 0x229ba8  [0x102f15ba8]        7
        operator new(unsigned long)  (in libc++abi.dylib)        7
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224c70  [0x102f10c70]        6
        ???  (in 2.1.152)  load address 0x102cec000 + 0x22a160  [0x102f16160]        6
        ???  (in 2.1.152)  load address 0x102cec000 + 0x236c58  [0x102f22c58]        6
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224a9c  [0x102f10a9c]        5
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224ab4  [0x102f10ab4]        5
        ???  (in 2.1.152)  load address 0x102cec000 + 0x224aec  [0x102f10aec]        5
        ???  (in 2.1.152)  load address 0x102cec000 + 0x22a0e8  [0x102f160e8]        5
        ???  (in 2.1.152)  load address 0x102cec000 + 0x22a29c  [0x102f1629c]        5
        ???  (in 2.1.152)  load address 0x102cec000 + 0x236cd4  [0x102f22cd4]        5

Found 3 possible duplicate issues:

[BUG] v2.1.117 embedded ugrep wrapper amplifies regex backtracking from grep-process-OOM into V8-heap-OOM (8 GB ceiling) — host freezes on WSL2 #54394
claude.exe ugrep subprocess wedges holding 6-9 GB RAM; parent does not SIGKILL on timeout #60749
[BUG] Claude Code freezes with memory leak when processing output with extremely long lines (minified files) #19720

This issue will be automatically closed as a duplicate in 3 days.

If your issue is a duplicate, please close it and 👍 the existing issue instead
To prevent auto-closure, add a comment or 👎 this comment

🤖 Generated with Claude Code

Closing as duplicate of #54394 — same root cause (v2.1.117 routing shell grep through claude.exe ugrep, V8-heap-bound 8 GB ceiling, catastrophic backtracking on minified single-line input). The #54394 issue is open with has repro / perf:memory labels and already has the architectural hypothesis.

Cross-posted macOS-specific evidence (sample-dump catastrophic-backtracking signature + trigger pattern) to #54394 as a comment, so the cross-platform signal isn't lost when this is closed.

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.

Navigation Menu

Repository navigation

Native CLI 2.1.152 consumes 8 GB+ RAM on regex with bounded repetition over minified single-line input #64133

Summary

Environment

Reproduction context

Sample dump signature

Killing was non-trivial

Expected behavior

Full `sample` output

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Native CLI 2.1.152 consumes 8 GB+ RAM on regex with bounded repetition over minified single-line input #64133

Description

Summary

Environment

Reproduction context

Sample dump signature

Killing was non-trivial

Expected behavior

Full sample output

Activity

github-actions commented on May 31, 2026

ksilyanov commented on May 31, 2026

github-actions commented on Aug 1, 2026

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions

Full `sample` output