regex crashes #6952
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.
- 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 (ESP8266MOD)
- Core Version:698ffc3 (latest master)
- Development Env: Platformio
- Operating System: Windows
Settings in IDE
- Module: Nodemcu
- Board nodemcuv2
- Flash Mode: ?
- Flash Size: 4MB
- lwip Variant: ?
- Reset Method: ?
- Flash Frequency: 40Mhz
- CPU Frequency: 80Mhz
- Upload Using: SERIAL
- Upload Speed: ?
Problem Description
When using a simple regex match, I get an user exception (panic/abort/assert)
MCVE Sketch
#include <Arduino.h> #include <regex> #include <string.h> void setup(void) { Serial.begin(9600); delay(5000); Serial.print("start"); // Target sequence std::string s = "I am looking for GeeksForGeeks articles"; // An object of regex for pattern to be searched std::regex r("Geek[a-zA-Z]+"); // flag type for determining the matching behavior // here it is for matches on 'string' objects std::smatch m; // regex_search() for searching the regex pattern // 'r' in the string 's'. 'm' is flag for determining // matching behavior. std::regex_search(s, m, r); // for each loop for (auto x : m) { Serial.print(x.str().c_str()); Serial.print(" "); } } void loop(void) { } Debug Messages
User exception (panic/abort/assert) Abort called >>>stack>>> ctx: cont sp: 3ffffc60 end: 3fffffc0 offset: 0000 3ffffc60: 0000002b 00000001 3ffffefc 4021f806 3ffffc70: 000000fe 00000000 00000000 00000000 3ffffc80: 00000000 00000000 00000000 0000000e 3ffffc90: 00000000 00000001 3fffff04 00000000 3ffffca0: 3fffff84 3fffff3c 3ffffee0 4020367e 3ffffcb0: 3fffff84 3fffff3c 3ffffee0 40203694 3ffffcc0: 00000000 3fffff3c 3ffffee0 40220924 3ffffcd0: 00000000 3fff0d0c 3ffffee0 40202324 3ffffce0: 0000006b 3fffff08 00000020 40100933 3ffffcf0: 00000001 00000000 3fffff08 40201d76 3ffffd00: 00000064 ffffffff 3ffffd50 00000000 3ffffd10: 00000000 3fffff3c 3ffffee0 402025d5 3ffffd20: 00000000 3fffff08 3ffffee0 40204c20 3ffffd30: 0000006b 3fffff08 3ffffee0 4020249e 3ffffd40: 3fffff08 00000004 3ffffee0 40202107 3ffffd50: 3fff0d0c 3fffff08 40201194 3fffff24 3ffffd60: 3fffff08 3fffff3c 3ffffee0 40202626 3ffffd70: 3fff0d0c 3fffff08 3ffffee0 40202646 3ffffd80: 3fffff08 3fffff3c 3ffffee0 4020261b 3ffffd90: 3fff0bbc 3fffff3c 3ffffee0 40202673 3ffffda0: 3fffff08 00000004 00000004 ffffffff 3ffffdb0: 3fff0bbc 3fffff3c 3ffffee0 40202673 3ffffdc0: 3fffff08 00000003 00000003 ffffffff 3ffffdd0: 3fff0a5c 3fffff3c 3ffffee0 40202673 3ffffde0: 3fffff08 00000002 00000002 ffffffff 3ffffdf0: c3c2c1c0 3fffff3c 3ffffee0 40202673 3ffffe00: 3fffff08 00000001 00000001 ffffffff 3ffffe10: 00000047 00000000 3ffffee0 402023c0 3ffffe20: 00000004 ffffffff 3ffffe60 40210ef5 3ffffe30: 00000000 00000000 00000000 40201142 3ffffe40: 00000000 00000000 3ffffee0 3fffff24 3ffffe50: 3fffff08 00000000 3ffffee0 40202787 3ffffe60: 3fff0824 feefeffe 40201110 40204b5c 3ffffe70: feefeffe feefeffe feefeffe 3ffef368 3ffffe80: 00000000 3ffe8020 00000020 4010096a 3ffffe90: 3fffff08 00000000 00000000 ffffffff 3ffffea0: feefeffe 3ffef368 00000007 4020b5cc 3ffffeb0: 3ffe885b 00000000 feff00ff 402177c8 3ffffec0: 00000001 3ffef368 000000ff 3fffff88 3ffffed0: 3fffdad0 00000000 3ffe884e 40202860 3ffffee0: 3fffff84 40204e68 3ffe885b 3ffe885b 3ffffef0: 00000010 3ffef8d8 0000000e 3fff0a80 3fffff00: 00000009 3fff09c8 40204e40 3fff0e4c 3fffff10: 3fff0f3c 3fff0fcc 00000010 00000000 3fffff20: 3ffef22c 00000000 00000000 3fffff24 3fffff30: 3fffff24 00000000 00000001 3fff0a5c 3fffff40: 3fff0a5c 3fff0a6c 3ffefbfc 402182e8 3fffff50: 3fffdad0 3fffff98 3fffff84 4021830e 3fffff60: 3fffff80 00000000 3ffeed34 3ffeed9c 3fffff70: 3fffdad0 00000000 3ffe884e 40202a10 3fffff80: 00000010 3ffefbfc feefeffe feefeffe 3fffff90: 3ffe885b 3ffe884e 3fff0990 feefeffe 3fffffa0: feefeffe feefeffe 3ffeed5c 402032d4 3fffffb0: feefeffe feefeffe 3ffe85b0 40100c35 <<<stack<<< Decoded stack results
0x4021f806: std::string::_Rep::_M_dispose(std::allocator const&) at /workdir/arena.x86_64/gcc/xtensa-lx106-elf/libstdc++-v3/include/bits/basic_string.h line 254 0x40220924: __cxxabiv1::__cxa_bad_cast() at /workdir/repo/gcc/libstdc++-v3/libsupc++/eh_aux_runtime.cc line 33 0x40210ef5: operator delete(void*) at /workdir/repo/gcc/libstdc++-v3/libsupc++/del_op.cc line 48 0x4020b5cc: wctype at /home/earle/src/esp-quick-toolchain/repo/newlib/newlib/libc/ctype/wctype.c line 136 0x402177c8: std::ctype ::_M_convert_to_wmask(char) const at ctype_members.cc line 110 0x402182e8: std::locale::_S_initialize_once() at /workdir/repo/gcc/libstdc++-v3/src/c++98/locale_init.cc line 267 0x4021830e: std::locale::_S_initialize() at /workdir/repo/gcc/libstdc++-v3/src/c++98/locale_init.cc line 280