[Bug middle-end/63451] New: bad location for the condition in for-loops

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63451

            Bug ID: 63451
           Summary: bad location for the condition in for-loops
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: manu at gcc dot gnu.org

int
f (int i, int j)
{
  unsigned int c = 0;                                                          
  if (i < j)
    {
      unsigned int n;
      for (unsigned int i = 0;
           i < n; i++)
        {
          c++;
        }
    }
  return c;
}


$ cc1 -O1 -Wall -std=c99 test.c
test.c:8:7: warning: ‘n’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
       for (unsigned int i = 0;
       ^