lakreite wrote:
Thank you for the feedback. I think there's a bug, because...
With invalid conversion specifiers clang emits a warning:
```c
main.cpp:5:17: warning: invalid conversion specifier 'k'
[-Wformat-invalid-specifier]
5 | printf("%d %k", 1, 1);
| ~^
main.cpp:5:24: warning: data argument not used by format string
[-Wformat-extra-args]
5 | printf("%d %k", 1, 1);
| ~~~~~~~ ^
2 warnings generated.
```
With incomplete specifier not at the last position Clang emits a warning:
```c
main.cpp:5:15: warning: invalid conversion specifier ' '
[-Wformat-invalid-specifier]
5 | printf("%1 %d", 1, 1);
| ~~^
main.cpp:5:24: warning: data argument not used by format string
[-Wformat-extra-args]
5 | printf("%1 %d", 1, 1);
| ~~~~~~~ ^
2 warnings generated.
```
So missing a warning looks strange:
```c
main.cpp:5:13: warning: incomplete format specifier [-Wformat]
5 | printf("%1", 1, 1, 1);
| ^~
1 warning generated.
```
https://github.com/llvm/llvm-project/pull/158514
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