On Fri, Jan 31, 2014 at 11:59 AM, Kyle McMartin <kmcma...@redhat.com> wrote: > Hi, > > Similar to other architectures, failing to set TRY_EMPTY_VM_SPACE > results in a Segmentation Fault and ICE in cc1plus when using > precompiled headers and randomize_va_space is set. This patch fixes the > issue, and now I can reliably build packages which use pch (wxGTK and > openjdk in particular would fail every time. wxGTK has survived 30 build > attempts without failure now.) > > (The exact value is unimportant, as long as it's in an unused area. I > suspect that the fallback buffer_size code path hasn't been fixed up > since the exec-shield days and could use a re-think now that mmap > randomization is upstream. I've been trying to debug exactly why it > fails for all architctures, so we can remove this, but haven't had much > luck yet.) > > This is similar to pch/45979, pch/14940, target/25343. > > Bootstrapped and tested on aarch64-linux-gnu. > > regards, Kyle > > 2014-01-31 Kyle McMartin <k...@redhat.com> > > PR pch/60010 > * config/host-linux.c (TRY_EMPTY_VM_SPACE): Define for AArch64.
If this gets merged before my ILP32 changes, I will make sure I include a fix for ILP32 also. Thanks, Andrew > > --- a/gcc/config/host-linux.c > +++ b/gcc/config/host-linux.c > @@ -86,6 +86,8 @@ > # define TRY_EMPTY_VM_SPACE 0x60000000 > #elif defined(__mc68000__) > # define TRY_EMPTY_VM_SPACE 0x40000000 > +#elif defined(__aarch64__) > +# define TRY_EMPTY_VM_SPACE 0x1000000000 > #elif defined(__ARM_EABI__) > # define TRY_EMPTY_VM_SPACE 0x60000000 > #elif defined(__mips__) && defined(__LP64__)
