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* [gcc r12-8092] libstdc++: Fix incorrect branch prediction hint in std::stacktrace
@ 2022-04-11 21:11 Jonathan Wakely
  0 siblings, 0 replies; only message in thread
From: Jonathan Wakely @ 2022-04-11 21:11 UTC (permalink / raw)
  To: gcc-cvs, libstdc++-cvs

https://gcc.gnu.org/g:b1124648ff8f655307f264d7b353fd68e3b03e9c

commit r12-8092-gb1124648ff8f655307f264d7b353fd68e3b03e9c
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Mon Apr 11 20:13:44 2022 +0100

    libstdc++: Fix incorrect branch prediction hint in std::stacktrace
    
    libstdc++-v3/ChangeLog:
    
            * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
            Change [[unlikely]] attribute to [[likely]].

Diff:
---
 libstdc++-v3/include/std/stacktrace | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libstdc++-v3/include/std/stacktrace b/libstdc++-v3/include/std/stacktrace
index dd78c71c5dc..79038e803f2 100644
--- a/libstdc++-v3/include/std/stacktrace
+++ b/libstdc++-v3/include/std/stacktrace
@@ -579,7 +579,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	{
 	  __try
 	    {
-	      if (0 < __n && __n <= _S_max_size(__alloc)) [[unlikely]]
+	      if (0 < __n && __n <= _S_max_size(__alloc)) [[likely]]
 		{
 		  _M_frames = __alloc.allocate(__n);
 		  _M_capacity = __n;


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