* [PATCH, bootstrap]: Initialize deref_align in ipa_modify_call_arguments to fix profiledbootstrap
@ 2013-09-07 8:19 Uros Bizjak
2013-09-09 9:07 ` Richard Biener
0 siblings, 1 reply; 2+ messages in thread
From: Uros Bizjak @ 2013-09-07 8:19 UTC (permalink / raw)
To: gcc-patches
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Hello!
It looks that it is too hard for the compiler to track deref_align
initialization through dependent deref_base boolean. The patch bellow
fixes "may be used uninitialized" warning that breaks
profiledbootstrap.
2013-09-07 Uros Bizjak <ubizjak@gmail.com>
* ipa-prop.c (ipa_modify_call_arguments): Initialize deref_align.
Tested on x86_64-pc-linux-gnu with LTO profiledbootstrap.
OK for mainline?
Uros.
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Index: ipa-prop.c
===================================================================
--- ipa-prop.c (revision 202352)
+++ ipa-prop.c (working copy)
@@ -3526,7 +3526,7 @@ ipa_modify_call_arguments (struct cgraph_edge *cs,
{
tree expr, base, off;
location_t loc;
- unsigned int deref_align;
+ unsigned int deref_align = 0;
bool deref_base = false;
/* We create a new parameter out of the value of the old one, we can
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH, bootstrap]: Initialize deref_align in ipa_modify_call_arguments to fix profiledbootstrap
2013-09-07 8:19 [PATCH, bootstrap]: Initialize deref_align in ipa_modify_call_arguments to fix profiledbootstrap Uros Bizjak
@ 2013-09-09 9:07 ` Richard Biener
0 siblings, 0 replies; 2+ messages in thread
From: Richard Biener @ 2013-09-09 9:07 UTC (permalink / raw)
To: Uros Bizjak; +Cc: gcc-patches
On Sat, Sep 7, 2013 at 10:15 AM, Uros Bizjak <ubizjak@gmail.com> wrote:
> Hello!
>
> It looks that it is too hard for the compiler to track deref_align
> initialization through dependent deref_base boolean. The patch bellow
> fixes "may be used uninitialized" warning that breaks
> profiledbootstrap.
>
> 2013-09-07 Uros Bizjak <ubizjak@gmail.com>
>
> * ipa-prop.c (ipa_modify_call_arguments): Initialize deref_align.
>
> Tested on x86_64-pc-linux-gnu with LTO profiledbootstrap.
>
> OK for mainline?
Ok.
Thanks,
Richard.
> Uros.
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