https://bugs.llvm.org/show_bug.cgi?id=51228
Bug ID: 51228
Summary: warn_unused_result and cast to void
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: C
Assignee: unassignedclangb...@nondot.org
Reporter: ndesaulni...@google.com
CC: aa...@aaronballman.com, blitzrak...@gmail.com,
dgre...@apple.com, erik.pilking...@gmail.com,
isanb...@gmail.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk
$ cat foo.c
__attribute__((warn_unused_result))
int foo(void);
void bar(void) {
(void)foo(); // cast result to void
}
$ gcc foo.c
warning: ignoring return value of 'foo' declared with attribute
'warn_unused_result' [-Wunused-result]
9 | (void)foo(); // cast result to void
| ^~~~~
$ clang foo.c
$
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