ubsan: tc-z80.c:3656 shift exponent 32 is too large

[deliverable/binutils-gdb.git] / gas / config / tc-z80.c

diff --git a/gas/config/tc-z80.c b/gas/config/tc-z80.c
index 45fcd6fbf74b5fb86e238401cfbe79c18e301407..2e17d00552271a6f16189fe9adf697f53b7e384f 100644 (file)
--- a/gas/config/tc-z80.c
+++ b/gas/config/tc-z80.c
@@ -3653,7 +3653,7 @@ md_assemble (char *str)
 static int
 is_overflow (long value, unsigned bitsize)
 {
-  long fieldmask = (1UL << bitsize) - 1;
+  long fieldmask = (2UL << (bitsize - 1)) - 1;
   long signmask = ~fieldmask;
   long a = value & fieldmask;
   long ss = a & signmask;