[gcc r12-2966] libstdc++: Fix testsuite for skipping gdb tests on remote/non-native target

[Jonathan Wakely <redi@gcc.gnu.org>]

https://gcc.gnu.org/g:817766f4dd2f6f3fdea2c4e6e22358b0b6b06d0d

commit r12-2966-g817766f4dd2f6f3fdea2c4e6e22358b0b6b06d0d
Author: Luc Michel <lmichel@kalray.eu>
Date:   Tue Aug 17 16:34:37 2021 +0100

    libstdc++: Fix testsuite for skipping gdb tests on remote/non-native target
    
    This fixes an incorrect invocation of gdb on remote targets where
    DejaGNU would try to run host's gdb in remote target simulator.
    gdb-test skips the testing when target is remote or non native but the
    gdb version check function does not.
    
    Suggested-by: Jonathan Wakely <jwakely@redhat.com>
    Signed-off-by: Luc Michel <lmichel@kalray.eu>
    
    Co-authored-by: Marc Poulhies <mpoulhies@kalrayinc.com>
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/lib/gdb-test.exp (gdb_version_check)
            (gdb_version_check_xmethods): Only check the GDB version for
            local native targets.

Diff:
---
 libstdc++-v3/testsuite/lib/gdb-test.exp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libstdc++-v3/testsuite/lib/gdb-test.exp b/libstdc++-v3/testsuite/lib/gdb-test.exp
index af20c85e5a0..f993355c2b4 100644
--- a/libstdc++-v3/testsuite/lib/gdb-test.exp
+++ b/libstdc++-v3/testsuite/lib/gdb-test.exp
@@ -280,6 +280,8 @@ proc gdb_batch_check {command pattern} {
 # but not earlier versions.
 # Return 1 if the version is ok, 0 otherwise.
 proc gdb_version_check {} {
+    if { ![isnative] || [is_remote target] } { return 0 }
+
     return [gdb_batch_check "python print(gdb.lookup_global_symbol)" \
 	      "<built-in function lookup_global_symbol>"]
 }
@@ -288,6 +290,8 @@ proc gdb_version_check {} {
 # in a manner similar to the check for a version of gdb which supports the
 # pretty-printer tests below.
 proc gdb_version_check_xmethods {} {
+    if { ![isnative] || [is_remote target] } { return 0 }
+
     return [gdb_batch_check \
 	      "python import gdb.xmethod; print(gdb.xmethod.XMethod)" \
 	      "<class 'gdb\\.xmethod\\.XMethod'>"]