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-rw-r--r--ext/intl/locale/locale_methods.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/ext/intl/locale/locale_methods.c b/ext/intl/locale/locale_methods.c
index 1707c69f93..9c5b09a7bc 100644
--- a/ext/intl/locale/locale_methods.c
+++ b/ext/intl/locale/locale_methods.c
@@ -127,6 +127,9 @@ static char* getPreferredTag(char* gf_tag)
int grOffset = 0;
grOffset = findOffset( LOC_GRANDFATHERED ,gf_tag);
+ if(grOffset < 0) {
+ return NULL;
+ }
if( grOffset < LOC_PREFERRED_GRANDFATHERED_LEN ){
/* return preferred tag */
result = estrdup( LOC_PREFERRED_GRANDFATHERED[grOffset] );