Core 3.1.x: static and flash memory usage messages from compiler seem corrupted #8896
Description
Basic Infos
- This issue complies with the issue POLICY doc.
- I have read the documentation at readthedocs and the issue is not addressed there.
- [how do I do this?] I have tested that the issue is present in current master branch (aka latest git).
- I have searched the issue tracker for a similar issue.
- If there is a stack dump, I have decoded it.
- I have filled out all fields below.
Platform
- Hardware: [ESP-12]
- Core Version: [3.1.2]
- Development Env: [Arduino IDE 1.8.19]
- Operating System: [Ubuntu]
Settings in IDE 1.8.19
--board esp8266:esp8266:nodemcuv2:xtal=80,vt=flash,exception=disabled,ssl=all,eesz=4M2M,led=2,ip=lm2f,dbg=Disabled,lvl=None____,wipe=none,baud=921600
- Module: [Nodemcu]
- Flash Mode: [???]
- Flash Size: [4MB/2MB]
- lwip Variant: [v2 Lower Memory]
- Reset Method: [???]
- Flash Frequency: [???]
- CPU Frequency: [80Mhz]
- Upload Using: [SERIAL]
- Upload Speed: [115200]
Problem Description
Prior to 3.1.x (e.g. 3.0.2), the compiler printed a summary of the static and flash memory usage that was formatted like this:
Executable segment sizes:
ICACHE : 32768 - flash instruction cache
IROM : 231500 - code in flash (default or ICACHE_FLASH_ATTR)
IRAM : 26217 / 32768 - code in IRAM (IRAM_ATTR, ISRs...)
DATA : 1496 ) - initialized variables (global, static) in RAM/HEAP
RODATA : 876 ) / 81920 - constants (global, static) in RAM/HEAP
BSS : 25520 ) - zeroed variables (global, static) in RAM/HEAP
Sketch uses 260089 bytes (24%) of program storage space. Maximum is 1044464 bytes.
Global variables use 27892 bytes (34%) of dynamic memory, leaving 54028 bytes for local variables. Maximum is 81920 bytes.
In 3.1.0, (and verified to be the same in 3.1.2), that changed to something like this, with a bunch of ? question marks, with no final summary lines:
. Variables and constants in RAM (global, static), used 28008 / 80192 bytes (34%)
??? SEGMENT BYTES DESCRIPTION
????????? DATA 1496 initialized variables
????????? RODATA 920 constants
????????? BSS 25592 zeroed variables
. Instruction RAM (IRAM_ATTR, ICACHE_RAM_ATTR), used 59143 / 65536 bytes (90%)
??? SEGMENT BYTES DESCRIPTION
????????? ICACHE 32768 reserved space for flash instruction cache
????????? IRAM 26375 code in IRAM
. Code in flash (default, ICACHE_FLASH_ATTR), used 231636 / 1048576 bytes (22%)
??? SEGMENT BYTES DESCRIPTION
????????? IROM 231636 code in flash
Expected Result
-
Those
?????????seem to indicate corrupted strings. -
Print the 2 summary lines in the format of:
Sketch uses 260089 bytes (24%) of program storage space. Maximum is 1044464 bytes.
Global variables use 27892 bytes (34%) of dynamic memory, leaving 54028 bytes for local variables. Maximum is 81920 bytes.
for readability and compatibility with other cores.
MCVE Sketch
A blank sketch is sufficient to see this.
#include <Arduino.h>
void setup() {}
void loop() {}