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Suppress declared_but_not_referenced warning for NVHPC

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Catch2 suppresses unused variable and equivalent warnings in a couple
  of places, but most importantly, in the declaration of autoRegistrar
  in test registry. This warning gets triggered by NVHPC compiler. The
  current patch adds three macros, namely:

      CATCH_INTERNAL_START_WARNINGS_SUPPRESSION
      CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS
      CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION

  for the NVHPC Compiler which in particular prevents that warning from
  occurring. The compiler is detected completely separately from the
  other compilers in this patch, because from what I found out, NVHPC
  defines __GNUC__ as well for some reason. (I suspect because it
  advertises itself as GNU compatible.)

  We also add a condition to make sure that the `__GNUC__` path is not
  taken by the NVHPC compiler.
This commit is contained in:
Jayesh Badwaik (FZ Juelich)
2023-02-08 12:40:55 +01:00
parent f3c0a3cd09
commit 644294df60
1 changed files with 7 additions and 1 deletions
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8
src/catch2/internal/catch_compiler_capabilities.hpp
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@@ -41,7 +41,7 @@
// Only GCC compiler should be used in this block, so other compilers trying to
// mask themselves as GCC should be ignored.
#if defined(__GNUC__) && !defined(__clang__) && !defined(__ICC) && !defined(__CUDACC__) && !defined(__LCC__)
#if defined(__GNUC__) && !defined(__clang__) && !defined(__ICC) && !defined(__CUDACC__) && !defined(__LCC__) && !defined(__NVCOMPILER)
# define CATCH_INTERNAL_START_WARNINGS_SUPPRESSION _Pragma( "GCC diagnostic push" )
# define CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION _Pragma( "GCC diagnostic pop" )
@@ -60,6 +60,12 @@
#endif
#if defined(__NVCOMPILER)
# define CATCH_INTERNAL_START_WARNINGS_SUPPRESSION _Pragma( "diag push" )
# define CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION _Pragma( "diag pop" )
# define CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS _Pragma( "diag_suppress declared_but_not_referenced" )
#endif
#if defined(__CUDACC__) && !defined(__clang__)
# ifdef __NVCC_DIAG_PRAGMA_SUPPORT__
// New pragmas introduced in CUDA 11.5+