[PATCH] Fix gdb.dwarf2/clztest.exp with Clang

[Gary Benson via Gdb-patches <gdb-patches@sourceware.org>]

Hi all,

Clang fails to compile gdb.dwarf2/clztest.S, with the following error:

  gdb compile failed, /gdbtest/src/gdb/testsuite/gdb.dwarf2/clztest.S:181:2:
    error: changed section flags for .eh_frame, expected: 0x2

This commit fixes the testcase by defining .eh_frame's flags
as Clang expects, when building with Clang (i.e. as "a" rather
than as "aw".)

Checked on Fedora 32 x86_64, with GCC and Clang.  Ok to commit?

Cheers,
Gary

---
gdb/testsuite/ChangeLog:

	* gdb.dwarf2/clztest.S (EH_FRAME_SH_FLAGS): New macro.
	(.eh_frame): Use the above.
---
 gdb/testsuite/ChangeLog            | 5 +++++
 gdb/testsuite/gdb.dwarf2/clztest.S | 8 +++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/gdb/testsuite/gdb.dwarf2/clztest.S b/gdb/testsuite/gdb.dwarf2/clztest.S
index a904fee..08a8bac 100644
--- a/gdb/testsuite/gdb.dwarf2/clztest.S
+++ b/gdb/testsuite/gdb.dwarf2/clztest.S
@@ -22,6 +22,12 @@
 
 */
 
+#if defined(__clang__)
+# define EH_FRAME_SH_FLAGS "a"
+#else
+# define EH_FRAME_SH_FLAGS "aw"
+#endif
+
 	.file	"clztest.c"
 	.text
 .Ltext0:
@@ -178,7 +184,7 @@ _start:
 .LEFDE4:
 #NO_APP
 #APP
-	.section	.eh_frame,"aw",@progbits
+	.section	.eh_frame,EH_FRAME_SH_FLAGS,@progbits
 .Lframe1:
 	.long	.LECIE1-.LSCIE1	# Length of Common Information Entry
 .LSCIE1:
-- 
1.8.3.1