[2.42 COMMITTED] x86-64: Skip -z mark-plt tests on MUSL

[Sam James]

From: "H.J. Lu" <hjl.tools@gmail.com>

Skip -z mark-plt tests, which are specific to glibc, on MUSL.

	PR ld/31970
	* ld/testsuite/ld-x86-64/x86-64.exp: Skip -z mark-plt tests on
	MUSL.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
(cherry picked from commit aa047105e03f6db375f4f1db257a28572e3c6427)
---
 ld/testsuite/ld-x86-64/x86-64.exp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/ld/testsuite/ld-x86-64/x86-64.exp b/ld/testsuite/ld-x86-64/x86-64.exp
index e370f393a7a..2a40f0b095b 100644
--- a/ld/testsuite/ld-x86-64/x86-64.exp
+++ b/ld/testsuite/ld-x86-64/x86-64.exp
@@ -2250,6 +2250,13 @@ run_dump_test "ibt-plt-3a-x32"
 run_dump_test "ibt-plt-3b-x32"
 run_dump_test "ibt-plt-3c-x32"
 run_dump_test "ibt-plt-3d-x32"
+
+# Skip -z mark-plt tests on MUSL.
+if { [istarget "x86_64-*-musl*"]} {
+    set ASFLAGS "$saved_ASFLAGS"
+    return
+}
+
 run_dump_test "mark-plt-1a"
 run_dump_test "mark-plt-1b"
 run_dump_test "mark-plt-1c"
-- 
2.45.2