[Bug c/41441] New: failure to warn about uninitialized induction var

[regehr at cs dot utah dot edu]

In foo() below, I'd expect gcc to emit a warning about use of i without
initialization, but this does not happen.

reg...@john-home:~$ current-gcc -O -Wall uninit.c -o uninit
reg...@john-home:~$ current-gcc -v
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../configure --prefix=/home/regehr/z/tmp/gcc-r151949-install
--program-prefix=r151949- --enable-languages=c,c++
Thread model: posix
gcc version 4.5.0 20090921 (experimental) (GCC) 
reg...@john-home:~$ cat uninit.c

#include <stdio.h>

void foo (void) {
  int i;
  for (; i<10; i=11) {
  }
}

int main (void)
{
  foo();
  return 0;
}


-- 
           Summary: failure to warn about uninitialized induction var
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: regehr at cs dot utah dot edu
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41441