[debuginfo] Fix and unify handling of fat pointers in debuginfo: Fix some debuginfo tests for old GDB versions and 32-bit targets.

Author: michaelwoerister

src/test/debuginfo/unsized.rs

@@ -5,50 +5,44 @@
 // gdb-command:run
 
 // gdb-command:print a
-// gdbg-check:$1 = {data_ptr: [...], length: 4}
+// gdbg-check:$1 = {data_ptr = [...], length = 4}
 // gdbr-check:$1 = &unsized::Foo<[u8]> {data_ptr: [...], length: 4}
 
 // gdb-command:print b
-// gdbg-check:$2 = {data_ptr: [...], length: 4}
+// gdbg-check:$2 = {data_ptr = [...], length = 4}
 // gdbr-check:$2 = &unsized::Foo<unsized::Foo<[u8]>> {data_ptr: [...], length: 4}
 
 // gdb-command:print c
-// gdbg-check:$3 = {pointer: [...], vtable: [...]}
+// gdbg-check:$3 = {pointer = [...], vtable = [...]}
 // gdbr-check:$3 = &unsized::Foo<dyn core::fmt::Debug> {pointer: [...], vtable: [...]}
 
-
 // === CDB TESTS ===================================================================================
 
 // cdb-command: g
 // cdb-command:dx a
 // cdb-check:a                [Type: ref$<unsized::Foo<slice$<u8> > >]
 // cdb-check:    [+0x000] data_ptr         : 0x[...] [Type: unsized::Foo<slice$<u8> > *]
-// cdb-check:    [+0x008] length           : 0x4 [Type: unsigned __int64]
+// cdb-check:    [...] length           : 0x4 [Type: unsigned [...]int[...]
 
 // cdb-command:dx b
 // cdb-check:b                [Type: ref$<unsized::Foo<unsized::Foo<slice$<u8> > > >]
 // cdb-check:    [+0x000] data_ptr         : 0x[...] [Type: unsized::Foo<unsized::Foo<slice$<u8> > > *]
-// cdb-check:    [+0x008] length           : 0x4 [Type: unsigned __int64]
+// cdb-check:    [...] length           : 0x4 [Type: unsigned [...]int[...]
 
 // cdb-command:dx c
 // cdb-check:c                [Type: ref$<unsized::Foo<dyn$<core::fmt::Debug> > >]
 // cdb-check:    [+0x000] pointer          : 0x[...] [Type: unsized::Foo<dyn$<core::fmt::Debug> > *]
-// cdb-check:    [+0x008] vtable           : 0x[...] [Type: unsigned __int64 (*)[3]]
-
+// cdb-check:    [...] vtable           : 0x[...] [Type: unsigned [...]int[...] (*)[3]]
 
 #![feature(omit_gdb_pretty_printer_section)]
 #![omit_gdb_pretty_printer_section]
 
 struct Foo<T: ?Sized> {
-    value: T
+    value: T,
 }
 
 fn main() {
-    let foo: Foo<Foo<[u8; 4]>> = Foo {
-        value: Foo {
-            value: *b"abc\0"
-        }
-    };
+    let foo: Foo<Foo<[u8; 4]>> = Foo { value: Foo { value: *b"abc\0" } };
 
     // We expect `a`, `b`, and `c` to all be fat pointers.
     // `a` and `b` should be slice-like and thus have a `data_ptr` and `length` field.
@@ -60,4 +54,6 @@ fn main() {
     zzz(); // #break
 }
 
-fn zzz() { () }
+fn zzz() {
+    ()
+}

src/test/debuginfo/vec-slices.rs

@@ -48,21 +48,24 @@
 // gdbg-check:$13 = {x = 13, y = 14, z = 15}
 // gdbr-check:$13 = vec_slices::AStruct {x: 13, y: 14, z: 15}
 
-// gdbg-command:print 'vec_slices::MUT_VECT_SLICE'.length
-// gdbr-command:print MUT_VECT_SLICE.length
-// gdb-check:$14 = 2
-// gdbg-command:print *((i64[2]*)('vec_slices::MUT_VECT_SLICE'.data_ptr))
-// gdbr-command:print *(MUT_VECT_SLICE.data_ptr as *const [i64; 2])
-// gdbg-check:$15 = {64, 65}
-// gdbr-check:$15 = [64, 65]
-
 // gdb-command:print mut_slice.length
-// gdb-check:$16 = 5
+// gdb-check:$14 = 5
 // gdbg-command:print *((i64[5]*)(mut_slice.data_ptr))
 // gdbr-command:print *(mut_slice.data_ptr as *const [i64; 5])
-// gdbg-check:$17 = {1, 2, 3, 4, 5}
-// gdbr-check:$17 = [1, 2, 3, 4, 5]
+// gdbg-check:$15 = {1, 2, 3, 4, 5}
+// gdbr-check:$15 = [1, 2, 3, 4, 5]
 
+// Some lines below are marked with [ignored] because old GDB versions seem to have trouble
+// accessing globals.
+
+// [ignored] gdbg-command:print 'vec_slices::MUT_VECT_SLICE'.length
+// gdbr-command:print MUT_VECT_SLICE.length
+// [ignored] gdbg-check:$16 = 2
+// gdbr-check:$16 = 2
+// [ignored] gdbg-command:print *((i64[2]*)('vec_slices::MUT_VECT_SLICE'.data_ptr))
+// gdbr-command:print *(MUT_VECT_SLICE.data_ptr as *const [i64; 2])
+// [ignored] gdbg-check:$17 = {64, 65}
+// gdbr-check:$17 = [64, 65]
 
 // === LLDB TESTS ==================================================================================
 
@@ -99,7 +102,7 @@
 struct AStruct {
     x: i16,
     y: i32,
-    z: i16
+    z: i16,
 }
 
 static VECT_SLICE: &'static [i64] = &[64, 65];
@@ -113,10 +116,8 @@ fn main() {
 
     let padded_tuple: &[(i32, i16)] = &[(6, 7), (8, 9)];
 
-    let padded_struct: &[AStruct] = &[
-        AStruct { x: 10, y: 11, z: 12 },
-        AStruct { x: 13, y: 14, z: 15 }
-    ];
+    let padded_struct: &[AStruct] =
+        &[AStruct { x: 10, y: 11, z: 12 }, AStruct { x: 13, y: 14, z: 15 }];
 
     unsafe {
         MUT_VECT_SLICE = VECT_SLICE;
@@ -127,4 +128,6 @@ fn main() {
     zzz(); // #break
 }
 
-fn zzz() {()}
+fn zzz() {
+    ()
+}