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| author | albert-github <albert.tests@gmail.com> | 2021-03-25 09:43:31 (GMT) |
|---|---|---|
| committer | albert-github <albert.tests@gmail.com> | 2021-03-25 09:43:31 (GMT) |
| commit | 5a252b0bb4a888fcf1a58f2a955aaa9f4451e803 (patch) | |
| tree | c08a7ed01cc6985305671afdeb1da0679518032d | |
| parent | 9533e6d6e8e69954593da006ab00ea362980bc76 (diff) | |
| download | Doxygen-5a252b0bb4a888fcf1a58f2a955aaa9f4451e803.zip Doxygen-5a252b0bb4a888fcf1a58f2a955aaa9f4451e803.tar.gz Doxygen-5a252b0bb4a888fcf1a58f2a955aaa9f4451e803.tar.bz2 | |
Problem with empty buffer in pyscanner.l
After commit:
```
Commit: 9533e6d6e8e69954593da006ab00ea362980bc76
Date: Wednesday, March 24, 2021 11:44:20 PM
Regression: fix potential lockup while parsing python code
```
the package fwupd-1.5.8 crashes with:
```
Reading /cygdrive/e/Fossies/fwupd-1.5.8/contrib/firmware_packager/__init__.py...
Parsing file /cygdrive/e/Fossies/fwupd-1.5.8/contrib/firmware_packager/__init__.py...
Thread 1 "doxygen" received signal SIGSEGV, Segmentation fault.
0x000000010065ea24 in yyread (yyscanner=0x8005d6930, buf=0x6ffffff60010 "", max_size=262143)
at .../doxygen/src/pyscanner.l:1443
1443 yyextra->inputPosition+=c;
```
| -rw-r--r-- | src/pyscanner.l | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/pyscanner.l b/src/pyscanner.l index ed471ed..90f3687 100644 --- a/src/pyscanner.l +++ b/src/pyscanner.l @@ -1438,6 +1438,7 @@ static yy_size_t yyread(yyscan_t yyscanner,char *buf,yy_size_t max_size) { struct yyguts_t *yyg = (struct yyguts_t*)yyscanner; yy_size_t c=0; + if (yyextra->inputString.isEmpty()) return 0; const char *p = yyextra->inputString.data() + yyextra->inputPosition; while ( c < max_size && *p ) { *buf++ = *p++; c++; } yyextra->inputPosition+=c; |