[cfe-dev] Disabling clang compiler warnings, but not static analyzer ones

[Anna Zaks]

On Jul 5, 2013, at 4:59 AM, Gábor Kozár <kozargabor at gmail.com> wrote:

> Hi,
> 
> To test the checkers we've developed, we would like to disable all clang warnings, except from the ones coming from our checker. We've tried the -w flag, but it also suppresses our own checker's warnings.

Is there something special in your setup?
The -w flag should not/does not suppress warnings coming from the analyzer:

Ex: 
$clang -w --analyze ~/tmp/ex.m
/Users/zaks/tmp/ex.m:4:11: warning: Division by zero
  return 5/zero + 5/0;
         ~^~~~~
1 warning generated.

> We're running the clang with the -Xclang -analyzer-checker="testchecker" flags.
> 
> We have some work-around ideas (putting a unique marker string in our warnings, and filter out any warnings that do not contain them), but I feel that this is something most checker developers would run into sooner-or-later, so surely, there must be a better solution.
> 
> So how could we disable all clang warnings, except for the ones emitted by our specific checker?
> 
> Thanks!
> 
> Gabor
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