[PATCH 1/6] Fix unstable test names in gdb.arch/arc-tdesc-cpu.exp

[Pedro Alves <palves@redhat.com>]

Currently if you diff testsuite/gdb.sum of two builds built from
different source trees you see this spurious hunk:

  -PASS: gdb.arch/arc-tdesc-cpu.exp: set tdesc filename /home/pedro/gdb1/src/gdb/testsuite/gdb.arch/arc-tdesc-cpu.xml
  +PASS: gdb.arch/arc-tdesc-cpu.exp: set tdesc filename /home/pedro/gdb2/src/gdb/testsuite/gdb.arch/arc-tdesc-cpu.xml

After this commit we'll show this instead in gdb.sum:
  PASS: gdb.arch/arc-tdesc-cpu.exp: set tdesc filename $srcdir/gdb.arch/arc-tdesc-cpu.xml

gdb/testsuite/ChangeLog:
yyyy-mm-dd  Pedro Alves  <palves@redhat.com>

	* gdb.arch/arc-tdesc-cpu.exp ('set tdesc filename'): Use gdb_test
	with explicit test name.
---
 gdb/testsuite/gdb.arch/arc-tdesc-cpu.exp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/gdb/testsuite/gdb.arch/arc-tdesc-cpu.exp b/gdb/testsuite/gdb.arch/arc-tdesc-cpu.exp
index f1c009d..13f677f 100644
--- a/gdb/testsuite/gdb.arch/arc-tdesc-cpu.exp
+++ b/gdb/testsuite/gdb.arch/arc-tdesc-cpu.exp
@@ -26,10 +26,10 @@ gdb_start
 # doesn't pass architecture from the target description directly to the
 # disassembler and instead uses one of the valid CPU names.
 
-set filename $srcdir/$subdir/arc-tdesc-cpu.xml
-
-set cmd "set tdesc filename $filename"
-gdb_test $cmd
+gdb_test \
+    "set tdesc filename $srcdir/$subdir/arc-tdesc-cpu.xml" \
+    ".*" \
+    "set tdesc filename \$srcdir/$subdir/arc-tdesc-cpu.xml"
 
 # An error message is emitted by the disassembler, therefore it is not shown
 # unless the disassembler is actually invoked.  Address "0" is not invalid,
-- 
2.5.5