* Unable to file a bug
@ 2014-12-12 15:40 Krzysztof Surdacki
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From: Krzysztof Surdacki @ 2014-12-12 15:40 UTC (permalink / raw)
To: overseers
Hello
I think I found a bug in gcc-4.9.2 in MS ABI on x86-64 platform and I
wanted to file it to GCC Bugzilla.
I am not able to do this because accounts creation is disabled.
The bug is in passing and returning structures with single member of
type float or double. For example:
struct TestStructWithDouble { double x; };
struct TestStructWithFloat { float x; };
This kind of structures are passed and returned via SSE registers
which is wrong.
According to MS specification:
http://msdn.microsoft.com/en-us/library/zthk2dkh.aspx
http://msdn.microsoft.com/en-us/library/7572ztz4.aspx
this kind of structures should be passed via RCX, RDX, R8, R9
registers and returned in RAX register.
All Best
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2014-12-12 15:40 Unable to file a bug Krzysztof Surdacki
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