[LLVMdev] nightly test suite failure: ms_struct-bitfield-init-1.c

[Jay Foad]

On 6 May 2011 09:29, Jay Foad <jay.foad at gmail.com> wrote:
> I've just tried to run the test-suite, for the first time in ages. It
> stops rather abruptly with:
>
> $ make TEST=nightly report report.html
>
> /home/jay/llvm/local/bin/llvm-gcc
> -I/home/jay/llvm/gitobjdir/projects/test-suite/SingleSource/UnitTests
> -I/home/jay/svn/llvm-project/test-suite/trunk/SingleSource/UnitTests
> -I/home/jay/git/llvm/projects/test-suite/include -I../../include
> -I/home/jay/llvm/gitobjdir/include -I/home/jay/git/llvm/include
> -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -DNDEBUG  -O3 -mllvm
> -disable-llvm-optzns  -m64 -fomit-frame-pointer -S
> /home/jay/svn/llvm-project/test-suite/trunk/SingleSource/UnitTests/ms_struct-bitfield-init-1.c
> -o Output/ms_struct-bitfield-init-1.ll -emit-llvm
> /home/jay/svn/llvm-project/test-suite/trunk/SingleSource/UnitTests/ms_struct-bitfield-init-1.c:28:
> error: size of array ‘a3’ is negative

If I compile this test by hand, I get the same error:

$ llvm-gcc -c ms_struct-bitfield-init-1.c -o /dev/null
ms_struct-bitfield-init-1.c:28: error: size of array ‘a3’ is negative

If I compile it with the system GCC, I *still* get the same error:

$ gcc --version
gcc (Ubuntu/Linaro 4.5.2-8ubuntu4) 4.5.2
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ gcc -c ms_struct-bitfield-init-1.c -o /dev/null
ms_struct-bitfield-init-1.c:28:12: error: size of array ‘a3’ is negative

So how is this test supposed to pass on Linux/x86_64 ?

Jay.