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-rw-r--r--src/backend/regex/regcomp.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/src/backend/regex/regcomp.c b/src/backend/regex/regcomp.c
index 71e69dea618..06c99139770 100644
--- a/src/backend/regex/regcomp.c
+++ b/src/backend/regex/regcomp.c
@@ -178,6 +178,9 @@ pg_regcomp(regex_t *preg, const char *pattern, int cflags)
int i;
size_t len;
pg_wchar *wcp;
+ size_t csetsize;
+
+ csetsize = (pg_database_encoding_max_length() == 1)?(SCHAR_MAX - SCHAR_MIN + 1):NC;
if (cclasses == NULL)
cclasses = cclass_init();
@@ -211,7 +214,7 @@ pg_regcomp(regex_t *preg, const char *pattern, int cflags)
/* do the mallocs early so failure handling is easy */
g = (struct re_guts *) malloc(sizeof(struct re_guts) +
- (NC - 1) * sizeof(cat_t));
+ (csetsize - 1) * sizeof(cat_t));
if (g == NULL)
return REG_ESPACE;
p->ssize = len / (size_t) 2 *(size_t) 3 + (size_t) 1; /* ugh */
@@ -235,7 +238,7 @@ pg_regcomp(regex_t *preg, const char *pattern, int cflags)
p->pbegin[i] = 0;
p->pend[i] = 0;
}
- g->csetsize = NC;
+ g->csetsize = csetsize;
g->sets = NULL;
g->setbits = NULL;
g->ncsets = 0;
@@ -248,7 +251,7 @@ pg_regcomp(regex_t *preg, const char *pattern, int cflags)
g->nsub = 0;
g->ncategories = 1; /* category 0 is "everything else" */
g->categories = &g->catspace[-(CHAR_MIN)];
- memset((char *) g->catspace, 0, NC * sizeof(cat_t));
+ memset((char *) g->catspace, 0, csetsize * sizeof(cat_t));
g->backrefs = 0;
/* do it */