[Bug testsuite/45455] New: gcc.dg/vect/vect-cond-4.c uses uninitialised variable

[Bug testsuite/45455] New: gcc.dg/vect/vect-cond-4.c uses uninitialised variable

[zsojka at seznam dot cz]

The testcase fails at -O0. It's caused by using 'next_b' at line 13. It might
be 'curr_b' instead.

Strangely, gcc warns only at -O0:
$ gcc-4.6.0-pre9999 gcc.dg/vect/vect-cond-4.c -O0 -Wuninitialized
gcc.dg/vect/vect-cond-4.c: In function 'foo':
gcc.dg/vect/vect-cond-4.c:33:38: warning: 'next_b' may be used uninitialized in
this function [-Wuninitialized]
$ gcc-4.6.0-pre9999 gcc.dg/vect/vect-cond-4.c -O1 -Wuninitialized
$ gcc-4.6.0-pre9999 gcc.dg/vect/vect-cond-4.c -O2 -Wuninitialized
$ gcc-4.6.0-pre9999 gcc.dg/vect/vect-cond-4.c -O3 -Wuninitialized

...
foo (int z)
...
  int curr_a, flag, next_a, curr_b, next_b;
...
          curr_a = x > c[i] ? curr_a : z;
          curr_b = x > c[i] ? next_b : 5;
...


-- 
           Summary: gcc.dg/vect/vect-cond-4.c uses uninitialised variable
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: zsojka at seznam dot cz


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45455

[Bug testsuite/45455] gcc.dg/vect/vect-cond-4.c uses uninitialised variable

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2010-08-31 10:01 -------
Subject: Bug 45455

Author: rguenth
Date: Tue Aug 31 10:01:04 2010
New Revision: 163669

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=163669
Log:
2010-08-31  Richard Guenther  <rguenther@suse.de>

        PR testsuite/45455
        * gcc.dg/vect/vect-cond-4.c: Fix use of uninitialized variable.

Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/vect/vect-cond-4.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45455

[Bug testsuite/45455] gcc.dg/vect/vect-cond-4.c uses uninitialised variable

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2010-08-31 10:01 -------
Fixed.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45455