[binutils-gdb] Use "maint ignore-probes" in no-libstdcxx-probe.exp

[Tom Tromey <tromey@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=3db27e74ee6175a2c73f3481ae5c5b8b2e4bc18f

commit 3db27e74ee6175a2c73f3481ae5c5b8b2e4bc18f
Author: Tom Tromey <tromey@adacore.com>
Date:   Thu Jan 19 11:26:53 2023 -0700

    Use "maint ignore-probes" in no-libstdcxx-probe.exp
    
    While looking at some test output, I saw that no-libstdcxx-probe.exp
    was not being run.  However, it occurred to me that Tom de Vries' new
    "maint ignore-probes" command could be used to enable this test
    unconditionally.
    
    Reviewed-by: Tom de Vries <tdevries@suse.de>

Diff:
---
 gdb/testsuite/gdb.cp/no-libstdcxx-probe.exp | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/gdb/testsuite/gdb.cp/no-libstdcxx-probe.exp b/gdb/testsuite/gdb.cp/no-libstdcxx-probe.exp
index b10daa638e6..752298af55d 100644
--- a/gdb/testsuite/gdb.cp/no-libstdcxx-probe.exp
+++ b/gdb/testsuite/gdb.cp/no-libstdcxx-probe.exp
@@ -21,12 +21,11 @@ if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
     return -1
 }
 
-if {![runto_main]} {
-    return -1
-}
+# This tests that $_exception gives an error when the systemtap probes
+# are not available, so simulate this by disabling them.
+gdb_test "maint ignore-probes libstdcxx .*" ".*OBJNAME: ''"
 
-if { [skip_libstdcxx_probe_tests] == 0 } {
-    untested "Have libstdc++ stap probe"
+if {![runto_main]} {
     return -1
 }