From fd4a4858282491d914988caea6ece438af93a9aa Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Wed, 11 Apr 2018 15:41:40 +0000
Subject: [PATCH] tests: skip -k tests on unsupported architectures

* tests/strace-k.test: When actual strace -k output doesn't match the
expected output because of limited architecture support, skip the test
on architectures that are not currently supported by libdw.
---
 tests/strace-k.test | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/tests/strace-k.test b/tests/strace-k.test
index c189711d..bc2ed06d 100755
--- a/tests/strace-k.test
+++ b/tests/strace-k.test
@@ -51,5 +51,25 @@ LC_ALL=C grep -E -x -f "$expected" < "$OUT" > /dev/null || {
 Failed pattern of expected output: $(cat "$expected")
 Actual output: $(cat "$OUT")
 __EOF__
+
+	pattern=
+	case "$STRACE_ARCH" in
+		aarch64|i386|ppc*|s390*|sparc*|x32|x86*)
+			# These architectures are supported by elfutils libdw,
+			# see grep '\<HOOK\>.*\<abi_cfi\>' elfutils/backends
+			;;
+		arm) pattern='No DWARF information found'
+			# This is also supported by elfutils libdw
+			# but the latter needs debuginfo for unwinding.
+			;;
+		*) pattern='Unwinding not supported for this architecture'
+			;;
+	esac
+	if [ -n "$pattern" ] &&
+	   LC_ALL=C grep -x " > $pattern" < "$LOG" > /dev/null; then
+		cat < "$LOG" >&2
+		skip_ "stack tracing is not fully supported on $STRACE_ARCH yet"
+	fi
+
 	dump_log_and_fail_with "$STRACE $args output mismatch"
 }