[cfe-dev] clang 3.6 compile failure but clang 3.4 success

[Jovi Zhangwei]

Hi,

I just tried clang 3.6 compile on one file in Linux kernel, it failed,
but clang 3.4 can success.
(I didn't apply any patch on clang source code, it's from clang repo
36 release tag)

Anyone can help this would be much appreciated.

In Linux kernel:

jovi at ubuntu:~/linux$ make CC=clang kernel/sched/core.o

  CHK     include/config/kernel.release

  CHK     include/generated/uapi/linux/version.h

  CHK     include/generated/utsrelease.h

  CC      kernel/bounds.s

clang: warning: optimization flag '-fno-delete-null-pointer-checks' is
not supported

kernel/bounds.c:18:2: error: unexpected token at start of statement

        DEFINE(NR_PAGEFLAGS, __NR_PAGEFLAGS);

        ^

include/linux/kbuild.h:5:25: note: expanded from macro 'DEFINE'

        asm volatile("\n->" #sym " %0 " #val : : "i" (val))

                        ^

<inline asm>:2:1: note: instantiated into assembly here

->NR_PAGEFLAGS $25 __NR_PAGEFLAGS

^

kernel/bounds.c:19:2: error: unexpected token at start of statement

        DEFINE(MAX_NR_ZONES, __MAX_NR_ZONES);

        ^

include/linux/kbuild.h:5:25: note: expanded from macro 'DEFINE'

        asm volatile("\n->" #sym " %0 " #val : : "i" (val))

                        ^

<inline asm>:2:1: note: instantiated into assembly here

->MAX_NR_ZONES $4 __MAX_NR_ZONES

^

kernel/bounds.c:21:2: error: unexpected token at start of statement

        DEFINE(NR_CPUS_BITS, ilog2(CONFIG_NR_CPUS));

        ^

include/linux/kbuild.h:5:25: note: expanded from macro 'DEFINE'

        asm volatile("\n->" #sym " %0 " #val : : "i" (val))

                        ^

<inline asm>:2:1: note: instantiated into assembly here

->NR_CPUS_BITS $8 ilog2(CONFIG_NR_CPUS)

^

kernel/bounds.c:23:2: error: unexpected token at start of statement

        DEFINE(SPINLOCK_SIZE, sizeof(spinlock_t));

        ^

include/linux/kbuild.h:5:25: note: expanded from macro 'DEFINE'

        asm volatile("\n->" #sym " %0 " #val : : "i" (val))

                        ^

<inline asm>:2:1: note: instantiated into assembly here

->SPINLOCK_SIZE $4 sizeof(spinlock_t)

^

4 errors generated.