[petsc-dev] Clang Analyzer

[Jed Brown]

Barry Smith <bsmith at mcs.anl.gov> writes:

>   Lisandro,
>
>    More code analysis is always good. We'll figure something out for this particular beast. Note that petscsys.h already uses #if defined(__has_attribute) so maybe we can use 
>
> #if defined(__has_attribute)
> #  if __has_attribute(analyzer_noreturn)
>
>    instead of the #ifdef __clang_analyzer__?

Should we add a PETSC_HAS_ATTRIBUTE(analyzer_noreturn) to make this less
verbose?  (It would return 0 if __has_attribute is not available.)  I
foresee more use of __has_attribute to reduce the number of tests we
have to run and make petscconf.h more robust to, e.g., minor version
changes in the compiler stack.
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