File gdb-testsuite-don-t-run-to-main-in-gdb.cp-cplusfuncs.patch of Package gdb

From 0293f33bd589d8d3a4c9cbc889934975e5fe50f2 Mon Sep 17 00:00:00 2001
From: Tom de Vries <tdevries@suse.de>
Date: Thu, 17 Apr 2025 17:57:29 +0200
Subject: [PATCH 2/2] [gdb/testsuite] Don't run to main in
 gdb.cp/cplusfuncs.exp

After building gdb with -fsanitize=threads, and running test-case
gdb.cp/cplusfuncs.exp, I run into a single timeout:
...
FAIL: gdb.cp/cplusfuncs.exp: info function operator=( (timeout)
...
and the test-case takes 2m33s to finish.

This is due to expanding CUs from libstdc++.

After de-installing package libstdc++6-debuginfo, the timeout disappears and
testing time goes down to 9 seconds.

Fix this by not running to main, which brings testing time down to 3 seconds.

With a gdb built without -fsanitize=threads, testing time goes down from 11
seconds to less than 1 second.

Tested on x86_64-linux.

Reviewed-By: Keith Seitz <keiths@redhat.com>
---
 gdb/testsuite/gdb.cp/cplusfuncs.exp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gdb/testsuite/gdb.cp/cplusfuncs.exp b/gdb/testsuite/gdb.cp/cplusfuncs.exp
index d789a1dbc88..75466e2d6bb 100644
--- a/gdb/testsuite/gdb.cp/cplusfuncs.exp
+++ b/gdb/testsuite/gdb.cp/cplusfuncs.exp
@@ -579,7 +579,8 @@ proc do_tests {} {
 
     gdb_test_no_output "set width 0"
 
-    runto_main
+    # Don't run to main, to avoid loading and expanding debug info for
+    # libstdc++.
 
     gdb_test_no_output "set language c++"
     probe_demangler
-- 
2.43.0