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

diff --git a/src/stdio/vfprintf.c b/src/stdio/vfprintf.c
index 50fb55c1..5e7be717 100644
--- a/src/stdio/vfprintf.c
+++ b/src/stdio/vfprintf.c

@@ -220,6 +220,7 @@ static int fmt_fp(FILE *f, long double y, int w, int p, int fl, int t)

else re=LDBL_MANT_DIG/4-1-p;

if (re) {

+ round *= 1<<(LDBL_MANT_DIG%4);

while (re--) round*=16;

if (*prefix=='-') {

y=-y;