http://llvm.org/bugs/show_bug.cgi?id=18980
Bug ID: 18980
Summary: Confusing location information of -Wunused-value
warnings
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
@trunk trunk 202299
The expression (i ? pf : pv) has no side effect, and therefore the computed
value is not used. Clang indicates that "pf" is not used. But to me it seems
not complete, as "pv" is also not used.
$: cat s.c
void a(int i) {
int (*pf)[2];
int (*pv)[i + 1];
(i ? pf : pv);
}
$: clang-trunk -Wunused-value -c s.c
s.c:4:8: warning: expression result unused [-Wunused-value]
(i ? pf : pv);
^~
1 warning generated.
$: gcc-trunk -Wunused-value -c s.c
s.c: In function ‘a’:
s.c:4:3: warning: statement with no effect [-Wunused-value]
(i ? pf : pv);
^
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