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| author | Fredrik Lundh <fredrik@pythonware.com> | 2000-08-07 17:33:38 (GMT) |
|---|---|---|
| committer | Fredrik Lundh <fredrik@pythonware.com> | 2000-08-07 17:33:38 (GMT) |
| commit | 18c2aa25a129fb6e38696b2b0fcabbb5af003a34 (patch) | |
| tree | 0ee5d697a3cd9332461bfd1752ac409301ed1c85 /Modules | |
| parent | aa39a7edf704da9c3107456809a8b8b7b6619daa (diff) | |
| download | cpython-18c2aa25a129fb6e38696b2b0fcabbb5af003a34.zip cpython-18c2aa25a129fb6e38696b2b0fcabbb5af003a34.tar.gz cpython-18c2aa25a129fb6e38696b2b0fcabbb5af003a34.tar.bz2 | |
+ if USE_STACKCHECK is defined, use PyOS_CheckStack to look
for excessive recursion.
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/_sre.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Modules/_sre.c b/Modules/_sre.c index d3841d5..8add74e 100644 --- a/Modules/_sre.c +++ b/Modules/_sre.c @@ -58,7 +58,9 @@ char copyright[] = " SRE 0.9.8 Copyright (c) 1997-2000 by Secret Labs AB "; /* optional features */ /* prevent run-away recursion (bad patterns on long strings) */ +#if !defined(USE_STACKCHECK) #define USE_RECURSION_LIMIT 10000 +#endif /* enables fast searching */ #define USE_FAST_SEARCH @@ -527,6 +529,11 @@ SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern, int level) TRACE(("%8d: enter %d\n", PTR(ptr), level)); +#if defined(USE_STACKCHECK) + if (level % 10 == 0 && PyOS_CheckStack()) { + return SRE_ERROR_RECURSION_LIMIT; +#endif + #if defined(USE_RECURSION_LIMIT) if (level > USE_RECURSION_LIMIT) return SRE_ERROR_RECURSION_LIMIT; |