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-rw-r--r--main/output.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/main/output.c b/main/output.c
index a31ea9cfad..bdeca894f2 100644
--- a/main/output.c
+++ b/main/output.c
@@ -758,7 +758,7 @@ PHPAPI void php_output_set_implicit_flush(int flush)
* Get the file name where output has started */
PHPAPI const char *php_output_get_start_filename(void)
{
- return ZSTR_VAL(OG(output_start_filename));
+ return OG(output_start_filename) ? ZSTR_VAL(OG(output_start_filename)) : NULL;
}
/* }}} */