musl - musl - an implementation of the standard library for Linux-based systems

diff --git a/src/multibyte/btowc.c b/src/multibyte/btowc.c
index 9d2c3b16..29cb798d 100644
--- a/src/multibyte/btowc.c
+++ b/src/multibyte/btowc.c

@@ -3,5 +3,6 @@

wint_t btowc(int c)

{

+ c = (unsigned char)c;

return c<128U ? c : EOF;

}