llvm/llvm-project
GitHub で見るmissing parenthesis for function-like macro invocation could have better diagnostic
Open
#123,038 opened on 2025年1月15日
clang:diagnosticsgood first issue
Repository metrics
- Stars
- (26,378 stars)
- PR merge metrics
- (平均マージ 1d 2h) (30d で 1,000 merged PRs)
説明
Consider:
$ cat /tmp/a.c
#define FOO() 42
int x = FOO;
The compiler will error because we forgot to use parens for FOO:
$ clang -c /tmp/a.c
/tmp/a.c:2:9: error: use of undeclared identifier 'FOO'
2 | int x = FOO;
| ^
1 error generated.
It would be nice if the compiler diagnostic included a note pointing out that FOO does exist, but as a function-like macro it requires parenthesis.