Zero JVM segfaulting on linux-sparc

[John Paul Adrian Glaubitz]

Hi Severin!

On 12/21/18 10:12 AM, Severin Gehwolf wrote:
> It could be that you are hitting a GCC bug specific to linux sparc.
> Then again, why wouldn't you hit it for a server JVM. As a temporary
> work-around you could try this (compile without opt as prior JDK-
> 8210425, not tested):
> 
> diff --git a/make/hotspot/lib/JvmOverrideFiles.gmk b/make/hotspot/lib/JvmOverrideFiles.gmk
> --- a/make/hotspot/lib/JvmOverrideFiles.gmk
> +++ b/make/hotspot/lib/JvmOverrideFiles.gmk
> @@ -49,6 +49,15 @@
>  # by using -ffp-contract=off on GCC/Clang platforms.
>  ifneq ($(FDLIBM_CFLAGS), )
>    LIBJVM_FDLIBM_COPY_OPT_FLAG := $(CXX_O_FLAG_NORM)
> +  # Don't optimize fdlibm-fork for Zero on Linux spark
> +  # See JDK-XXXX
> +  ifeq ($(call check-jvm-feature, zero), true)
> +    ifeq ($(OPENJDK_TARGET_OS), linux)
> +      ifeq ($(OPENJDK_TARGET_CPU_ARCH), spark)
> +        LIBJVM_FDLIBM_COPY_OPT_FLAG := $(CXX_O_FLAG_NONE)
> +      endif
> +    endif
> +  endif
>  endif
This indeed fixes the problem for me, with the spelling fix for "sparc" ;-).

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz at debian.org
`. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913