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Fix CPP compilation with IAR #1345

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merged 1 commit into from Feb 28, 2022

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alexandre-perrin
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IAR defines STDC_VERSION in cpp as well.
Which causes TU_VERIFY_STATIC to be defined as _Static_assert
instead of cpp's static_assert.

This reorders cplusplus to be first, then to fallback to
STDC_VERSION if not CPP.

IAR defines __STDC_VERSION__ in cpp as well.
Which causes TU_VERIFY_STATIC to be defined as _Static_assert
instead of cpp's static_assert.

This reorders __cplusplus__ to be first, then to fallback to
__STDC_VERSION__ if not CPP.
@yoyopod
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yoyopod commented Feb 23, 2022

I experienced this same problem with an IAR build, and fixed it in the exact manner proposed.

I have subsequently learned that C11 also defines a macro, 'static_assert', in assert.h, that maps to C11's '_Static_assert' keyword. Relying on the macro would allow the C and C++ cases both to use static_assert(), with no need to differentiate.

@HiFiPhile HiFiPhile self-requested a review February 23, 2022 21:56
@alexandre-perrin
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Fixes #1344

@hathach hathach merged commit 8e84529 into hathach:master Feb 28, 2022
@alexandre-perrin alexandre-perrin deleted the iar-cpp-verify-static branch February 28, 2022 10:16
@alexandre-perrin alexandre-perrin restored the iar-cpp-verify-static branch March 4, 2022 17:59
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4 participants