Mercurial > hg > octave-lojdl > gnulib-hg
changeset 204:06c6a8b2ee89
*** empty log message ***
| author | Karl Heuer <kwzh@gnu.org> |
|---|---|
| date | Thu, 21 Apr 1994 19:26:10 +0000 |
| parents | 74a6325fb756 |
| children | 0eadb99caf02 |
| files | regex.c |
| diffstat | 1 files changed, 15 insertions(+), 5 deletions(-) [+] |
line wrap: on
line diff
--- a/regex.c +++ b/regex.c @@ -888,7 +888,7 @@ /* Avoiding alloca during matching, to placate r_alloc. */ -/* Define MATCH_MAY_ALLOCATE if we need to make sure that the +/* Define MATCH_MAY_ALLOCATE unless we need to make sure that the searching and matching functions should not call alloca. On some systems, alloca is implemented in terms of malloc, and if we're using the relocating allocator routines, then malloc could cause a @@ -1256,6 +1256,7 @@ We make the fail stack a global thing, and then grow it to re_max_failures when we compile. */ #ifndef MATCH_MAY_ALLOCATE +static int fail_stack_allocated; static fail_stack_type fail_stack; static const char ** regstart, ** regend; @@ -2493,10 +2494,19 @@ is strictly greater than re_max_failures, the largest possible stack is 2 * re_max_failures failure points. */ fail_stack.size = (2 * re_max_failures * MAX_FAILURE_ITEMS); - if (! fail_stack.stack) - fail_stack.stack = - (fail_stack_elt_t *) malloc (fail_stack.size - * sizeof (fail_stack_elt_t)); + if (fail_stack.size > fail_stack_allocated) + { + if (! fail_stack.stack) + fail_stack.stack = + (fail_stack_elt_t *) malloc (fail_stack.size + * sizeof (fail_stack_elt_t)); + else + fail_stack.stack = + (fail_stack_elt_t *) realloc (fail_stack.stack, + (fail_stack.size + * sizeof (fail_stack_elt_t))); + fail_stack_allocated = fail_stack.size; + } /* Initialize some other variables the matcher uses. */ RETALLOC_IF (regstart, num_regs, const char *);