https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95472
Bug ID: 95472 Summary: various diagnostics for C/C++ hyperlinks to gfortran doc Product: gcc Version: 10.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: xry111 at mengyan1223 dot wang Target Milestone: --- $ cat t1.c int main() { int x; return x; } $ gcc t1.c -Wall t1.c: In function 'main': t1.c:4:9: warning: 'x' is used uninitialized in this function [-Wuninitialized] 4 | return x; | ^ It looks OK, but in GCC-10 we have diagnostics with hyperlink. If you click "- Wuninitialized" you'll be diverted to gfortran doc: https://gcc.gnu.org/onlinedocs/gfortran/Error-and-Warning-Options.html#index-Wuninitialized This also happens to -Wreturn-type and -Wuninitialized. Strangely these two entries don't even exist in gfortran doc. But it does not happens to -Wformat or -Wimplicit-function-declaration etc.