diff options
| author | Richard M. Stallman <[email protected]> | 1996-04-12 22:57:28 +0000 |
|---|---|---|
| committer | Richard M. Stallman <[email protected]> | 1996-04-12 22:57:28 +0000 |
| commit | ffd76827b0eda72f38f6972d49b38bdd6a01602a (patch) | |
| tree | 19d3f553ebf8a3060b9c0f02842749d86ec95fb1 /src/regex.c | |
| parent | e049945bc05c5b51cd0d8f0cd26d554c942f59a1 (diff) | |
(MAX_FAILURE_ITEMS): Use 5 instead of actual number of regs.
Diffstat (limited to 'src/regex.c')
| -rw-r--r-- | src/regex.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/regex.c b/src/regex.c index 7128c4e87c..e6d04a57df 100644 --- a/src/regex.c +++ b/src/regex.c @@ -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 \ |