[LLVMbugs] [Bug 17290] -Wsometimes-uninitialized and -Wconditional-uninitialized give suboptimal fixit with 'bool' variables

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Thu Sep 19 16:04:23 PDT 2013


David Blaikie <dblaikie at gmail.com> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
                 CC|                            |dblaikie at gmail.com
         Resolution|---                         |WORKSFORME

--- Comment #3 from David Blaikie <dblaikie at gmail.com> ---
Works for me:

$ cat bool.c
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>

int main (void)
  bool foo;
  if (random() % 2)
    foo = true;

  if (foo)
    printf ("Hello");

  return 0;
blaikie at blaikie:~/dev/scratch$ clang++-tot -Weverything bool.c
clang-3.3: warning: treating 'c' input as 'c++' when in C++ mode, this behavior
is deprecated
bool.c:8:7: warning: variable 'foo' is used uninitialized whenever 'if'
condition is false [-Wsometimes-uninitialized]
  if (random() % 2)
bool.c:13:7: note: uninitialized use occurs here
  if (foo)
bool.c:8:3: note: remove the 'if' if its condition is always true
  if (random() % 2)
bool.c:7:11: note: initialize the variable 'foo' to silence this warning
  bool foo;
           = false
1 warning generated.

You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20130919/f515e55f/attachment.html>

More information about the llvm-bugs mailing list