https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66673
--- Comment #6 from Marek Polacek ---
(In reply to joe.carnuccio from comment #2)
> -Wall produces no warnings...
Oh, you're using too old GCC. Please try a newer version.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66673
--- Comment #5 from Markus Trippelsdorf ---
https://www.google.com/?#q=nasal%20demons&lang=en
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66673
--- Comment #4 from joe.carnuccio at qlogic dot com ---
if I do a ^= b ^= a ^= b it always work correctly;
doing *p ^= *q ^= *p ^= *q fails (unless -Os is used);
i.e. dereferenced pointers are being treated differently
int a = 0x32, b = 0x45;
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66673
--- Comment #3 from joe.carnuccio at qlogic dot com ---
Sorry, I ment this:
root@elab305:/home/joe/test/c# make -B x CFLAGS+='-Wall'
cc -Wall -c -o x.o x.c
cc x.o -o x
root@elab305:/home/joe/test/c# ./x
0 32
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66673
--- Comment #2 from joe.carnuccio at qlogic dot com ---
-Wall produces no warnings...
root@elab305:/home/joe/test/c# make -B x -Wall
cc-c -o x.o x.c
cc x.o -o x
root@elab305:/home/joe/test/c# ./x
0 32
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66673
Marek Polacek changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
CC|
