[gcc r10-10561] libstdc++: Increase timeout for pthread7-rope.cc test

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

https://gcc.gnu.org/g:4c91bfc5f9b64310b437797eae97d7602745e409

commit r10-10561-g4c91bfc5f9b64310b437797eae97d7602745e409
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Jan 6 11:10:31 2022 +0000

    libstdc++: Increase timeout for pthread7-rope.cc test
    
    This test spawns thousands of threads and so times out if the tests are
    run with a low timeout value and the machine is busy.
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/ext/rope/pthread7-rope.cc: Add dg-timeout-factor.
    
    (cherry picked from commit e19e2989c36c5148ceb67a1f2575718fc1927ce6)

Diff:
---
 libstdc++-v3/testsuite/ext/rope/pthread7-rope.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libstdc++-v3/testsuite/ext/rope/pthread7-rope.cc b/libstdc++-v3/testsuite/ext/rope/pthread7-rope.cc
index 4896053a013..1d0e9a96cae 100644
--- a/libstdc++-v3/testsuite/ext/rope/pthread7-rope.cc
+++ b/libstdc++-v3/testsuite/ext/rope/pthread7-rope.cc
@@ -20,6 +20,7 @@
 // { dg-do run }
 // { dg-options "-pthread"  }
 // { dg-require-effective-target pthread }
+// { dg-timeout-factor 2 }
 
 #include <ext/rope>
 #include <cstring>
@@ -33,7 +34,7 @@ typedef __gnu_cxx::rope<char, std::allocator<char> > rope_type;
 rope_type foo2;
 rope_type foo4;
 
-void* thread_main(void *) 
+void* thread_main(void *)
 {
   // To see a problem with gcc 3.3 and before, set a break point here.
   // Single step through c_str implementation, call sched_yield after