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Re: [PATCH] Enable building of libsanitizer on sparc linux again.

From: "H.J. Lu" <>
Date: Sat, 17 Nov 2012 16:06:23 -0800

> On Sat, Nov 17, 2012 at 4:04 PM, David Miller <> wrote:
>> From: Eric Botcazou <>
>> Date: Sun, 18 Nov 2012 00:18:15 +0100
>>> error: '__NR_mmap2' was not declared in this scope
>>>    return (void *)syscall(__NR_mmap2, addr, length, prot, flags, fd, offset);
>> The people making libsanitizer changes are really going to have to
>> stop making i386 specific changes to these generic files.
>> Specifically, in this case, they are checking for whether mmap2 is
>> available using __x86_64__ cpp tests.  A more appropriate test is
>> necessary.
>> Oh nevermind, H.J. Liu added this build regression, I should have
>> known.
>> H.J., either fix or revert this code back to using __WORDSIZE if you
>> cannot come up with an appropriate test.
> Please follow:

The whole way this libsanitizer merge is being handled is
beyond unreasonable.

A build fix being held up for 4 days just proves that requiring things
get merged into LLVM first is completely the wrong way for this stuff
to work.

The people who merged in this library should be responsible for
keeping changes in sync, not the individual developers who fix bugs
and make improvements to this code on the gcc side.

It's lunacy that this build problem is in the tree for 4 days because
of this.

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