[gdb/testsuite] Fix duplicate in gdb.base/argv0-symlink.exp

I found the following duplicates in gdb.base/argv0-symlink.exp:
...
DUPLICATE: gdb.base/argv0-symlink.exp: set print repeats 10000
DUPLICATE: gdb.base/argv0-symlink.exp: set print elements 10000
...

Fix these by using with_test_prefix "file symlink" / "dir symlink".

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2021-06-24  Tom de Vries  <tdevries@suse.de>

	* gdb.base/argv0-symlink.exp: Use with_test_prefix.

2 files changed, 68 insertions, 55 deletions

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index a790e68..73035a9 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2021-06-24  Tom de Vries  <tdevries@suse.de>
+
+	* gdb.base/argv0-symlink.exp: Use with_test_prefix.
+
 2021-06-23  Tom de Vries  <tdevries@suse.de>
 
 	* lib/gdb.exp (gdb_test_lines): Rewrite to accept single
diff --git a/gdb/testsuite/gdb.base/argv0-symlink.exp b/gdb/testsuite/gdb.base/argv0-symlink.exp
index f39f75c..f55d986 100644
--- a/gdb/testsuite/gdb.base/argv0-symlink.exp
+++ b/gdb/testsuite/gdb.base/argv0-symlink.exp
@@ -38,73 +38,82 @@ if { [build_executable ${testfile}.exp ${testfile} ${srcfile}] == -1 } {
     return -1
 }
 
-set test "kept file symbolic link name"
-set filelink "${testfile}-filelink"
-
-remote_file host delete [standard_output_file $filelink]
-set status [remote_exec host "ln -sf ${testfile} [standard_output_file $filelink]"]
-if {[lindex $status 0] != 0} {
-    unsupported "$test (host does not support symbolic links)"
-    return 0
-}
-
-clean_restart "$filelink"
+with_test_prefix "file symlink" {
 
-if ![runto_main] {
-    untested "could not run to main"
-    return -1
-}
+    set test "kept name"
+    set filelink "${testfile}-filelink"
 
-gdb_test_no_output "set print repeats 10000"
-gdb_test_no_output "set print elements 10000"
+    remote_file host delete [standard_output_file $filelink]
+    set status [remote_exec host \
+		    "ln -sf ${testfile} [standard_output_file $filelink]"]
+    if {[lindex $status 0] != 0} {
+	unsupported "$test (host does not support symbolic links)"
+	return 0
+    }
 
-if { $has_argv0 } {
-    gdb_test {print argv[0]} "/$filelink\"" $test
-} else {
-    unsupported $test
-}
+    clean_restart "$filelink"
 
-# For a link named /PATH/TO/DIR/LINK, we want to check the output
-# against "/DIR/LINK", but computed in a way that doesn't make
-# assumptions about the test directory layout.
-set full_filelink [standard_output_file $filelink]
-set lastdir [file tail [file dirname $full_filelink]]
+    if ![runto_main] {
+	untested "could not run to main"
+	return -1
+    }
 
-gdb_test "info inferiors" "/$lastdir/$filelink *" "$test for info inferiors"
+    gdb_test_no_output "set print repeats 10000"
+    gdb_test_no_output "set print elements 10000"
 
+    if { $has_argv0 } {
+	gdb_test {print argv[0]} "/$filelink\"" $test
+    } else {
+	unsupported $test
+    }
 
-set test "kept directory symbolic link name"
-set dirlink "${testfile}-dirlink"
+    # For a link named /PATH/TO/DIR/LINK, we want to check the output
+    # against "/DIR/LINK", but computed in a way that doesn't make
+    # assumptions about the test directory layout.
+    set full_filelink [standard_output_file $filelink]
+    set lastdir [file tail [file dirname $full_filelink]]
 
-# 'ln -sf' does not overwrite symbol link to a directory.
-# 'remote_file host delete' uses stat (not lstat), therefore it refuses to
-# delete a directory.
-remote_exec host "rm -f [standard_output_file $dirlink]"
-set status [remote_exec host "ln -sf . [standard_output_file $dirlink]"]
-if {[lindex $status 0] != 0} {
-    unsupported "$test (host does not support symbolic links)"
-    return 0
+    gdb_test "info inferiors" "/$lastdir/$filelink *" \
+	"$test for info inferiors"
 }
 
-clean_restart "$dirlink/$filelink"
+with_test_prefix "dir symlink" {
 
-if ![runto_main] {
-    untested "could not run to main"
-    return -1
-}
+    set test "kept name"
+    set dirlink "${testfile}-dirlink"
+
+    # 'ln -sf' does not overwrite symbol link to a directory.
+    # 'remote_file host delete' uses stat (not lstat), therefore it refuses to
+    # delete a directory.
+    remote_exec host "rm -f [standard_output_file $dirlink]"
+    set status [remote_exec host "ln -sf . [standard_output_file $dirlink]"]
+    if {[lindex $status 0] != 0} {
+	unsupported "$test (host does not support symbolic links)"
+	return 0
+    }
 
-gdb_test_no_output "set print repeats 10000"
-gdb_test_no_output "set print elements 10000"
+    clean_restart "$dirlink/$filelink"
 
-if { $has_argv0 } {
-    # gdbserver in extended-remote mode does not have this issue.
-    # Plain remote does, however.
-    if {[target_info gdb_protocol] != "extended-remote" || ![target_is_gdbserver]} {
-	setup_kfail "*-*-*" gdb/15934
+    if ![runto_main] {
+	untested "could not run to main"
+	return -1
+    }
+
+    gdb_test_no_output "set print repeats 10000"
+    gdb_test_no_output "set print elements 10000"
+
+    if { $has_argv0 } {
+	# gdbserver in extended-remote mode does not have this issue.
+	# Plain remote does, however.
+	if { [target_info gdb_protocol] != "extended-remote"
+	     || ![target_is_gdbserver] } {
+	    setup_kfail "*-*-*" gdb/15934
+	}
+	gdb_test {print argv[0]} "/$dirlink/$filelink\"" $test
+    } else {
+	unsupported $test
     }
-    gdb_test {print argv[0]} "/$dirlink/$filelink\"" $test
-} else {
-    unsupported $test
-}
 
-gdb_test "info inferiors" "/$lastdir/$filelink *" "$test for info inferiors"
+    gdb_test "info inferiors" "/$lastdir/$filelink *" \
+	"$test for info inferiors"
+}