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* [Bug c/51894] New: Fail to warn on likely precedence error in conditional
@ 2012-01-18 20:00 aravindvijayan224185 at gmail dot com
2012-01-19 10:31 ` [Bug c/51894] " rguenth at gcc dot gnu.org
2012-01-19 13:59 ` manu at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: aravindvijayan224185 at gmail dot com @ 2012-01-18 20:00 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51894
Bug #: 51894
Summary: Fail to warn on likely precedence error in conditional
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: aravindvijayan224185@gmail.com
Created attachment 26371
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26371
example program showing the failure to warn
example program showing the failure to warn:
gcc version 4.7.0
If you have:
if (ret = return_neg_one() == 1)
printf("direct_test==true\n");
else
printf("direct_test==false\n");
The compiler will warn:
/tmp/tmp.c:51:2: warning: suggest parentheses around assignment used as truth
value
But if it is a complex conditional:
if (!cond ||
(ret = return_neg_one() == 1))
The compiler will not warn. It seems it should warn in this case as well.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-01-18 20:00 [Bug c/51894] New: Fail to warn on likely precedence error in conditional aravindvijayan224185 at gmail dot com
2012-01-19 10:31 ` [Bug c/51894] " rguenth at gcc dot gnu.org
2012-01-19 13:59 ` manu at gcc dot gnu.org
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