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authorVincent Chen <vincentc@andestech.com>2019-05-27 14:17:21 +0800
committerGreentime Hu <greentime@andestech.com>2019-05-31 15:23:25 +0800
commit8183db10db6377ac58ad048a4c827425a614695c (patch)
tree254cbc061694aca21fcd6885ced86adb8015189e /include/math-emu/op-common.h
parentLinux 5.2-rc1 (diff)
downloadlinux-dev-8183db10db6377ac58ad048a4c827425a614695c.tar.xz
linux-dev-8183db10db6377ac58ad048a4c827425a614695c.zip
math-emu: Use statement expressions to fix Wshift-count-overflow warning
To avoid "shift count >= width of type" warning, using statement expressions to implement the conditional controlling before constant shift The modification in op-2.h is taken from the glibc commit 'sysdeps/unix/sysv/lin ("fe0b1e854ad32")'. Signed-off-by: Vincent Chen <vincentc@andestech.com> Acked-by: Greentime Hu <greentime@andestech.com> Signed-off-by: Greentime Hu <greentime@andestech.com>
Diffstat (limited to 'include/math-emu/op-common.h')
-rw-r--r--include/math-emu/op-common.h11
1 files changed, 6 insertions, 5 deletions
diff --git a/include/math-emu/op-common.h b/include/math-emu/op-common.h
index 6bdf8c61d221..f37d12877754 100644
--- a/include/math-emu/op-common.h
+++ b/include/math-emu/op-common.h
@@ -795,11 +795,12 @@ do { \
ur_ = (unsigned rtype) -r; \
else \
ur_ = (unsigned rtype) r; \
- if (rsize <= _FP_W_TYPE_SIZE) \
- __FP_CLZ(X##_e, ur_); \
- else \
- __FP_CLZ_2(X##_e, (_FP_W_TYPE)(ur_ >> _FP_W_TYPE_SIZE), \
- (_FP_W_TYPE)ur_); \
+ (void) (((rsize) <= _FP_W_TYPE_SIZE) \
+ ? ({ __FP_CLZ(X##_e, ur_); }) \
+ : ({ \
+ __FP_CLZ_2(X##_e, (_FP_W_TYPE)(ur_ >> _FP_W_TYPE_SIZE), \
+ (_FP_W_TYPE)ur_); \
+ })); \
if (rsize < _FP_W_TYPE_SIZE) \
X##_e -= (_FP_W_TYPE_SIZE - rsize); \
X##_e = rsize - X##_e - 1; \