[binutils-gdb] [gdb/testsuite] Fix have_mpx with remote-gdbserver-on-localhost

[Tom de Vries <vries@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=43792b0de4e1f9cbd7f38c00f7150df66b8bddea

commit 43792b0de4e1f9cbd7f38c00f7150df66b8bddea
Author: Tom de Vries <tdevries@suse.de>
Date:   Fri Oct 7 16:17:35 2022 +0200

    [gdb/testsuite] Fix have_mpx with remote-gdbserver-on-localhost
    
    With target board remote-gdbserver-on-localhost and gdb.arch/i386-mpx-call.exp
    I run into:
    ...
    FAIL: gdb.arch/i386-mpx-call.exp: upper_bnd0: continue to a bnd violation
    ...
    
    This is due to the have_mpx test which should return 0, but instead returns 1
    because the captured output:
    ...
    No MPX support
    No MPX support
    ...
    does not match the used regexp:
    ...
        set status [expr ($status == 0) \
                       && ![regexp "^No MPX support\r\n" $output]]
    ...
    which does match the captured output with native:
    ...
    No MPX support^M
    No MPX support^M
    ...
    
    Fix this by making the \r in the regexp optional.
    
    Tested on x86_64-linux, with native and target board
    remote-gdbserver-on-localhost.

Diff:
---
 gdb/testsuite/lib/gdb.exp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index d60dceffd3f..99a6de6f724 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -8636,7 +8636,7 @@ gdb_caching_proc have_mpx {
     set status [lindex $result 0]
     set output [lindex $result 1]
     set status [expr ($status == 0) \
-		    && ![regexp "^No MPX support\r\n" $output]]
+		    && ![regexp "^No MPX support\r?\n" $output]]
 
     remote_file build delete $obj