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Added generic workaround for double type alignment

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This fixes not only 32-bit Linux/macOS builds but PowerPC Mac target too
This commit is contained in:
alexey.lysiuk 2017-04-23 13:25:13 +03:00
parent 1c6cc3e28f
commit ea3b47d0ad
1 changed files with 7 additions and 8 deletions
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15
src/scripting/types.cpp
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@ -705,14 +705,13 @@ PFloat::PFloat(unsigned int size)
Flags |= TYPE_Float;
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__
if (sizeof(void*) == 4)
{
// Some ABIs for 32-bit platforms define alignment of double type as 4 bytes
// Intel POSIX (System V ABI) and PowerPC Macs are examples of those
struct AlignmentCheck { uint8_t i; double d; };
Align = static_cast<unsigned int>(offsetof(AlignmentCheck, d));
}
SetDoubleSymbols();
}