https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105539
qinzhao at gcc dot gnu.org changed:
What |Removed |Added
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CC| |qinzhao at gcc dot gnu.org
--- Comment #5 from qinzhao at gcc dot gnu.org ---
I am a little confused:
with gcc -Wuninitialized -O1 (without -ftrivial-auto-var-init=zero), there are
two issues:
1. the early uninitialized analysis didn't catch the uninitialized usage of y;
2. the ccp optimization deletes the if (z) statement completely:
[opc@qinzhao-aarch64-ol8 105539]$ cat t.c.034t.ccp1
;; Function x (x, funcdef_no=0, decl_uid=3591, cgraph_uid=1, symbol_order=0)
Removing basic block 3
Merging blocks 2 and 4
int x (int z)
{
int y;
<bb 2> :
return 10;
}
are the above two bugs?
