[Patch Testsuite] Make all_attributes.cc in to (almost_)all_attributes.cc for ARM.

[James Greenhalgh]

Hi,

As discussed on IRC, glibc's sysdeps/unix/sysv/linux/arm/sys/ucontext.h
for ARM has a field named "unused", in a struct which looks like this:

  struct _libc_fpstate
  {
    struct
    {
      unsigned int sign1:1;
      unsigned int unused:15;
      unsigned int sign2:1;
      unsigned int exponent:14;
      unsigned int j:1;
      unsigned int mantissa1:31;
      unsigned int mantissa0:32;
    } fpregs[8];
    unsigned int fpsr:32;
    unsigned int fpcr:32;
    unsigned char ftype[8];
    unsigned int init_flag;
  };

The all_attributes testcase #defines unused to '1', giving
  unsigned int 1:15;
which is not going to work.

This patch just disables the check in this test case for
"unused" when testing for ARM, which resolves the issue.

Tested on arm-none-linux-gnueabihf to confirm it clears the FAIL.

OK?

Thanks,
James

---
2015-03-20  James Greenhalgh  <james.greenhalgh@arm.com>

	* testsuite/17_intro/headers/c++1998/all_attributes.cc: Disable
	test for unused for ARM.
	* testsuite/17_intro/headers/c++200x/all_attributes.cc: Likewise.
	* testsuite/17_intro/headers/c++2014/all_attributes.cc: Likewise.
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