| Issue |
174966
|
| Summary |
Poor Clang diagnostic for string literal concatenation with undefined macro
|
| Labels |
clang:diagnostics
|
| Assignees |
|
| Reporter |
zmodem
|
Example:
```
#define BAR "bar"
const char *s = "foo" BAAR;
```
The author intended to concatenate "foo" with the string defined by the `BAR` macro but misspelled it. The diagnostic doesn't even mentioned the misspelled (and therefore undefined) macro though:
```
$ build/bin/clang -c /tmp/a.c
/tmp/a.c:2:22: error: expected ';' after top level declarator
2 | const char *s = "foo" BAAR;
| ^
| ;
1 error generated.
```
Other compilers have similar output (https://godbolt.org/z/o1GqPYdrG), but maybe Clang could do better?
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