With just CONFIG_DEBUG_INFO=y, the makefile adds "-g" to KBUILD_CFLAGS/KBUILD_AFLAGS and the test passes.
However, if CONFIG_DEBUG_INFO_SPLIT is also enabled, the makefile adds "-gsplit-dwarf" instead which makes the test fail with $?==1 because of objcopy trying to split the debug info: objcopy: Warning: '/dev/null' is not an ordinary file This changes the output to $(mktemp) which fixes the problem. I am pretty sure there better ways, this is just to demonstrate the bug. gcc 5.4.1, ppc64le (does not really matter). Cc: Jason Baron <[email protected]> Signed-off-by: Alexey Kardashevskiy <[email protected]> --- scripts/gcc-goto.sh | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/scripts/gcc-goto.sh b/scripts/gcc-goto.sh index c9469d34ecc6..ab21216ab68d 100755 --- a/scripts/gcc-goto.sh +++ b/scripts/gcc-goto.sh @@ -2,7 +2,8 @@ # Test for gcc 'asm goto' support # Copyright (C) 2010, Jason Baron <[email protected]> -cat << "END" | $@ -x c - -c -o /dev/null >/dev/null 2>&1 && echo "y" +TMPOUT=$(mktemp) +cat << "END" | $@ -x c - -c -o $TMPOUT >/dev/null 2>&1 && echo "y" int main(void) { #if defined(__arm__) || defined(__aarch64__) @@ -19,3 +20,5 @@ entry: return 0; } END + +rm $TMPOUT 2>/dev/null 2>&1 -- 2.11.0
