[Zlib-devel] HEADS UP: Apparent bad compilation under (just released) GCC 4.5.0

[Jesus Cea]

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On 11/05/10 21:46, Török Edwin wrote:
> OK, maybe psyco doesn't align the stack as GCC expects it?
> Please discuss this with psyco developers.
> 
> It doesn't look like zlib itself is doing anything wrong here.

No, this is not a flaw in psyco or in zlib. It is in GCC. GCC 4.5.0
expect stack to be aligned to 16 bytes, but this expectation is not ABI
required. See GCC bugzilla linked in my last post.

Psyco exposes the bug, but the problem is GCC using MMX/SSE and
expecting the stack be 16 byte aligned, where the ABI only requires 4
byte aligned.

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