https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44677
eggert at cs dot ucla.edu changed:
What |Removed |Added
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CC| |eggert at cs dot ucla.edu
--- Comment #13 from eggert at cs dot ucla.edu ---
I ran into this issue today on Emacs master, with both += and |=. Clang
correctly diagnosed unused local variables, but GCC did not.
It would be nice if GCC could do at least as well as Clang does.
Here are references to patches I installed into Emacs to fix these issues that
Clang found but GCC did not:
https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=d9bffa1f3b121085fd8f954eb9446a4a5241c062
https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=68bc1446855c86b96d5bc22f819e63358ab250ac
