[binutils-gdb] gdb/testsuite: fix occasional failure in gdb.mi/mi-multi-commands.exp

[Andrew Burgess <aburgess@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=77399b529808626f764bcc347be0d6e8b6b167ce

commit 77399b529808626f764bcc347be0d6e8b6b167ce
Author: Andrew Burgess <aburgess@redhat.com>
Date:   Mon May 9 16:49:03 2022 +0100

    gdb/testsuite: fix occasional failure in gdb.mi/mi-multi-commands.exp
    
    In bug PR gdb/29036, another failure was reported for the test
    gdb.mi/mi-multi-commands.exp.  This test sends two commands to GDB as
    a single write, and then checks that both commands are executed.
    
    The problem that was encountered here is that the output of the first
    command, which looks like this:
    
      ^done,value="\"FIRST COMMAND\""
    
    Is actually produced in parts, first the '^done' is printed, then the
    ',value="\"FIRST COMMAND\"" is printed.
    
    What was happening is that some characters from the second command
    were being echoed after the '^done' had been printed, but before the
    value part had been printed.  To avoid this issue I've relaxed the
    pattern that checks for the first command a little.  With this fix in
    place the occasional failure in this test is no longer showing up.
    
    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29036

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

diff --git a/gdb/testsuite/gdb.mi/mi-multi-commands.exp b/gdb/testsuite/gdb.mi/mi-multi-commands.exp
index d00e0aaea8b..58187b15815 100644
--- a/gdb/testsuite/gdb.mi/mi-multi-commands.exp
+++ b/gdb/testsuite/gdb.mi/mi-multi-commands.exp
@@ -100,7 +100,7 @@ proc run_test { args } {
 	set seen_second_message false
 
 	gdb_test_multiple "" "look for first command output, command length $i" -prompt "$mi_gdb_prompt" {
-	    -re "\\^done,value=\"\\\\\"FIRST COMMAND\\\\\"\"" {
+	    -re "\\^done.*,value=\"\\\\\"FIRST COMMAND\\\\\"\"" {
 		set seen_first_message true
 		exp_continue
 	    }