| Summary: | -MM suppresses error detection | ||
|---|---|---|---|
| Product: | gcc | Reporter: | Petr Skocik <pskocik> |
| Component: | driver | Assignee: | Not yet assigned to anyone <unassigned> |
| Status: | RESOLVED INVALID | ||
| Severity: | normal | ||
| Priority: | P3 | ||
| Version: | unknown | ||
| Target Milestone: | --- | ||
| Host: | Target: | ||
| Build: | Known to work: | ||
| Known to fail: | Last reconfirmed: | ||
-MM implies -E, -MD doesn't. |
Example: touch in.h gcc -x c -include in.h - -MD -MF /dev/stdout <<<'int main(){x; return 42;} fails as it should. Changing -MD to -MM causes the failure to go undetected (no stderr output, no nonzero exit status), making it look as if the compilation succeeded. (Notes: Changing -MF /dev/stdout to -MF regular_file makes no difference. Clang has this behavior too)