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author | Richard Stallman <rms@gnu.org> | 1996-04-12 22:57:28 +0000 |
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committer | Richard Stallman <rms@gnu.org> | 1996-04-12 22:57:28 +0000 |
commit | 41bedd577381fde124cc6c4d0cbb451110ebe707 (patch) | |
tree | 8d6afbe0dcb064f73819346df1fa8fe15641e8c7 | |
parent | ae3df78115af16391c77de2333ef87ab5b855873 (diff) | |
download | gnulib-41bedd577381fde124cc6c4d0cbb451110ebe707.tar.gz |
(MAX_FAILURE_ITEMS): Use 5 instead of actual number of regs.
-rw-r--r-- | regex.c | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -1004,7 +1004,7 @@ static const char *re_error_msgid[] = #endif /* Roughly the maximum number of failure points on the stack. Would be - exactly that if always used MAX_FAILURE_SPACE each time we failed. + exactly that if always used MAX_FAILURE_ITEMS items each time we failed. This is a variable only so users of regex can assign to it; we never change it ourselves. */ #if defined (MATCH_MAY_ALLOCATE) @@ -1221,7 +1221,10 @@ typedef struct #endif /* We push at most this many items on the stack. */ -#define MAX_FAILURE_ITEMS ((num_regs - 1) * NUM_REG_ITEMS + NUM_NONREG_ITEMS) +/* We used to use (num_regs - 1), which is the number of registers + this regexp will save; but that was changed to 5 + to avoid stack overflow for a regexp with lots of parens. */ +#define MAX_FAILURE_ITEMS (5 * NUM_REG_ITEMS + NUM_NONREG_ITEMS) /* We actually push this many items. */ #define NUM_FAILURE_ITEMS \ |