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* [committed] libstdc++: Fix dangling reference in filesystem::path::filename()
@ 2022-10-28 23:56 Jonathan Wakely
  0 siblings, 0 replies; only message in thread
From: Jonathan Wakely @ 2022-10-28 23:56 UTC (permalink / raw)
  To: libstdc++, gcc-patches

Tested powerpc64le-linux. Pushed to trunk. Worth backporting too.

-- >8 --

The new -Wdangling-reference warning noticed this.

libstdc++-v3/ChangeLog:

	* include/bits/fs_path.h (path::filename()): Fix dangling
	reference.
---
 libstdc++-v3/include/bits/fs_path.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libstdc++-v3/include/bits/fs_path.h b/libstdc++-v3/include/bits/fs_path.h
index 6e7b366d104..2fc7dcd98c9 100644
--- a/libstdc++-v3/include/bits/fs_path.h
+++ b/libstdc++-v3/include/bits/fs_path.h
@@ -1262,9 +1262,9 @@ namespace __detail
       {
 	if (_M_pathname.back() == preferred_separator)
 	  return {};
-	auto& __last = *--end();
-	if (__last._M_type() == _Type::_Filename)
-	  return __last;
+	auto __last = --end();
+	if (__last->_M_type() == _Type::_Filename)
+	  return *__last;
       }
     return {};
   }
-- 
2.37.3


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2022-10-28 23:56 [committed] libstdc++: Fix dangling reference in filesystem::path::filename() Jonathan Wakely

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