https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64610
Bug ID: 64610
Summary: No -Wbool-compare warning on "(0 != a) >= 0"
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: chengniansun at gmail dot com
There is no warning on the expression "(0 != a) >= 0". I think the cause of
this bug is different from the one I reported just now (PR64609).
$: cat s.c
int a;
void fn1() { ((0 != a) >= 0); }
$:
$: gcc-trunk -Wbool-compare -c s.c
$:
$: clang-trunk -Wno-unused-value -c s.c
s.c:2:24: warning: comparison of constant 0 with boolean expression is always
true [-Wtautological-constant-out-of-range-compare]
void fn1() { ((0 != a) >= 0); }
~~~~~~~~ ^ ~
1 warning generated.
$:
$:
