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commit 6cd4ad106ef87a3c58b0c3478e78409b47000de0
Author: Howard Chu <hyc@symas.com>
Date: Tue Apr 25 20:17:03 2017 -0700
Fix, errno is volatile int
diff --git a/libstdc++-v3/src/filesystem/dir.cc b/libstdc++-v3/src/filesystem/dir.cc
index 6ff12d0..5bbd664 100644
--- a/libstdc++-v3/src/filesystem/dir.cc
+++ b/libstdc++-v3/src/filesystem/dir.cc
@@ -147,7 +147,7 @@ fs::_Dir::advance(error_code* ec, directory_options options)
int err = std::exchange(errno, 0);
const auto entp = readdir(dirp);
- std::swap(errno, err);
+ std::swap((int&)errno, err);
if (entp)
{
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