llvm dev - Nov 2006 - [LLVMdev] [patch] [llvm-gcc4] fix bootstrap failure

The attached patch fixes a bootstrap failure introduced by the use of
llvm_streams.

Best Regards,
Rafael
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The llvm_ostreams, which you take the address of go out of scope very
quickly, and are only stored by address in the bytecode writer, thus
the writers have a pointer to a stack allocated object they are to
write to.  This crashes.

Andrew

On 11/30/06, Rafael Espíndola <rafael.espindola at gmail.com>
wrote:
> The attached patch fixes a bootstrap failure introduced by the use of
> llvm_streams.
>
> Best Regards,
> Rafael
>
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
>
>
>

On 11/30/06, Andrew Lenharth <andrewl at lenharth.org>
wrote:
> The llvm_ostreams, which you take the address of go out of scope very
> quickly, and are only stored by address in the bytecode writer, thus
> the writers have a pointer to a stack allocated object they are to
> write to.  This crashes.
The attached version leaks :-)
It is a work around. If I understand correctly, the ostream wrapper is
also a temporary solution, so this might be acceptable.
> Andrew
Thanks,
Rafael
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This patch crashes the built compiler.

On Nov 30, 2006, at 7:20 AM, Rafael Espíndola wrote:
> The attached patch fixes a bootstrap failure introduced by the use of
> llvm_streams.
>
> Best Regards,
> Rafael
> <llvm-gcc.patch>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
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