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

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=17290

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.

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