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. --- 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__)