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authorVasily Gorbik <gor@linux.ibm.com>2020-10-09 14:25:23 +0200
committerIngo Molnar <mingo@kernel.org>2020-10-13 12:08:32 +0200
commitab0a40ea88204e1291b56da8128e2845fec8ee88 (patch)
treecc5fbd5a413ce558cce6c832ae9b217ac11400b8 /arch/x86/xen
parent2486baae2cf6df73554144d0a4e40ae8809b54d4 (diff)
downloadlinux-ab0a40ea88204e1291b56da8128e2845fec8ee88.tar.bz2
perf build: Allow nested externs to enable BUILD_BUG() usage
Currently the BUILD_BUG() macro is expanded to the following: do { extern void __compiletime_assert_0(void) __attribute__((error("BUILD_BUG failed"))); if (!(!(1))) __compiletime_assert_0(); } while (0); If used in a function body this would obviously produce build errors with -Wnested-externs and -Werror. To enable BUILD_BUG() usage in tools/arch/x86/lib/insn.c which perf includes in intel-pt-decoder, build perf without -Wnested-externs. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Tested-by: Stephen Rothwell <sfr@canb.auug.org.au> # build tested Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/patch-1.thread-251403.git-2514037e9477.your-ad-here.call-01602244460-ext-7088@work.hours
Diffstat (limited to 'arch/x86/xen')
0 files changed, 0 insertions, 0 deletions