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Fixed alignment issue with GCC/Clang i386 build

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alexey.lysiuk 2017-04-10 22:20:34 +03:00
parent d5edd3db36
commit 4c1e03ebff
1 changed files with 9 additions and 0 deletions
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9
src/dobjtype.cpp
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@ -780,6 +780,15 @@ PFloat::PFloat(unsigned int size)
mDescriptiveName.Format("Float%d", size);
if (size == 8)
{
#ifdef __i386__
// According to System V i386 ABI alignment of double type is 4
// GCC and Clang for 32-bit Intel targets follow this requirement
// However GCC has -malign-double option to enable 8-byte alignment
// So calculation of the actual alignment is needed
struct AlignmentCheck { uint8_t i; double d; };
Align = static_cast<unsigned int>(offsetof(AlignmentCheck, d));
#endif // __i386__
SetDoubleSymbols();
}
else