https://bugs.llvm.org/show_bug.cgi?id=47487
Bug ID: 47487
Summary: support for GNU C label attributes
Product: clang
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: C
Assignee: unassignedclangb...@nondot.org
Reporter: ndesaulni...@google.com
CC: blitzrak...@gmail.com, dgre...@apple.com,
erik.pilking...@gmail.com, isanb...@gmail.com,
jykni...@google.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk
https://gcc.gnu.org/onlinedocs/gcc/Label-Attributes.html#Label-Attributes
https://godbolt.org/z/Er3rP8
#include <stdio.h>
int foo(void) {
asm goto ("some asm" : : : : NoError);
/* This branch (the fall-through from the asm) is less commonly used */
ErrorHandling:
__attribute__((cold, unused)); /* Semi-colon is required here */
printf("error\n");
return 0;
NoError:
printf("no error\n");
return 1;
}
clang:
warning: 'cold' attribute only applies to functions [-Wignored-attributes]
__attribute__((cold, unused)); /* Semi-colon is required here */
^
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