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-rw-r--r--ext/mbstring/libmbfl/mbfl/mbfilter.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/ext/mbstring/libmbfl/mbfl/mbfilter.c b/ext/mbstring/libmbfl/mbfl/mbfilter.c
index 907fa272b6..646912ad16 100644
--- a/ext/mbstring/libmbfl/mbfl/mbfilter.c
+++ b/ext/mbstring/libmbfl/mbfl/mbfilter.c
@@ -906,6 +906,9 @@ mbfl_strpos(
if (offset < 0) {
negative_offset = -offset - pc.needle_len;
+ if (negative_offset < 0) {
+ negative_offset = 0;
+ }
offset = 0;
}