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Fix -Wundef warning by first checking if macro is defined #3861

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Merged
beutlich merged 1 commit into from
Sep 7, 2021
Merged

Fix -Wundef warning by first checking if macro is defined #3861

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4 changes: 2 additions & 2 deletions Modelica/Resources/C-Sources/ModelicaUtilities.h
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Original file line number Diff line number Diff line change
Expand Up @@ -56,13 +56,13 @@ extern "C" {
external Modelica C-code in most compilers, noreturn attributes need to
be present to avoid warnings or errors.

The following macros handle noreturn attributes according to the latest
The following macros handle noreturn attributes according to the
C11/C++11 standard with fallback to GNU, Clang or MSVC extensions if using
an older compiler.
*/
#undef MODELICA_NORETURN
#undef MODELICA_NORETURNATTR
#if __STDC_VERSION__ >= 201112L
#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
#define MODELICA_NORETURN _Noreturn
#define MODELICA_NORETURNATTR
#elif defined(__cplusplus) && __cplusplus >= 201103L
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