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regex: fix minor over-allocation

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* lib/regexec.c (push_fail_stack): Fix off-by-one error that
over-allocated the stack.
This commit is contained in:
Paul Eggert
2022-03-11 13:34:07 -08:00
committed by Bruno Haible
parent 46178509bc
commit d85d2084d4
2 changed files with 5 additions and 1 deletions
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ChangeLog
+4
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@@ -1,5 +1,9 @@
2022-03-11 Paul Eggert <eggert@cs.ucla.edu>
regex: fix minor over-allocation
* lib/regexec.c (push_fail_stack): Fix off-by-one error that
over-allocated the stack.
regex: fix free_fail_stack undefined behavior
* lib/regexec.c (push_fail_stack): Don’t increment number of
re_fail_stack_t entries until after successful allocation. This
lib/regexec.c
+1 -1
View File
@@ -1309,7 +1309,7 @@ push_fail_stack (struct re_fail_stack_t *fs, Idx str_idx, Idx dest_node,
{
reg_errcode_t err;
Idx num = fs->num;
if (num + 1 == fs->alloc)
if (num == fs->alloc)
{
struct re_fail_stack_ent_t *new_array;
new_array = re_realloc (fs->stack, struct re_fail_stack_ent_t,