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Everywhere: Add Clang pragmas

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We use these to prevent UB from being optimized away in `/bin/crash` and
to make the compiler not warn about the many implicit floating point
type promotions in LibM.
This commit is contained in:
Daniel Bertalan 2021-07-06 06:27:27 +02:00 • committed by Gunnar Beutner
parent 98a9a1d7f9
commit e8e628de57
2 changed files with 14 additions and 1 deletions
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9
Userland/Libraries/LibM/math.cpp
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@ -14,6 +14,11 @@
#include <stdint.h> #include <stdint.h>
#include <stdlib.h> #include <stdlib.h>
#ifdef __clang__
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wdouble-promotion"
#endif
template<size_t> template<size_t>
constexpr double e_to_power(); constexpr double e_to_power();
template<> template<>
@ -1461,3 +1466,7 @@ float nearbyintf(float value) NOEXCEPT
return internal_to_integer(value, RoundingMode { fegetround() }); return internal_to_integer(value, RoundingMode { fegetround() });
} }
} }
#ifdef __clang__
# pragma clang diagnostic pop
#endif

4
Userland/Utilities/crash.cpp
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@ -21,7 +21,11 @@
using Test::Crash; using Test::Crash;
#ifdef __clang__
# pragma clang optimize off
#else
# pragma GCC optimize("O0") # pragma GCC optimize("O0")
#endif
int main(int argc, char** argv) int main(int argc, char** argv)
{ {