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-rw-r--r--ext/mbstring/libmbfl/filters/mbfilter_utf32.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/mbstring/libmbfl/filters/mbfilter_utf32.c b/ext/mbstring/libmbfl/filters/mbfilter_utf32.c
index 5b02362b5d..b1b41331eb 100644
--- a/ext/mbstring/libmbfl/filters/mbfilter_utf32.c
+++ b/ext/mbstring/libmbfl/filters/mbfilter_utf32.c
@@ -138,7 +138,7 @@ int mbfl_filt_conv_utf32_wchar(int c, mbfl_convert_filter *filter)
if (endian) {
n = c & 0xff;
} else {
- n = (c & 0xff) << 24;
+ n = (unsigned) (c & 0xff) << 24;
}
filter->cache = n;
filter->status++;