1 files changed, 42 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/20_util/from_chars/pr107468.cc b/libstdc++-v3/testsuite/20_util/from_chars/pr107468.cc
new file mode 100644
index 0000000..95bf669
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/from_chars/pr107468.cc
@@ -0,0 +1,42 @@
+// Copyright (C) 2022 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-do run { target c++17 } }
+// { dg-add-options ieee }
+
+#include <charconv>
+#include <string>
+#include <cfenv>
+#include <testsuite_hooks.h>
+
+int
+main()
+{
+  // FP from_char not available otherwise.
+#if __cpp_lib_to_chars >= 201611L \
+    && _GLIBCXX_USE_C99_FENV_TR1 \
+    && defined(FE_DOWNWARD) \
+    && defined(_GLIBCXX_FLOAT_IS_IEEE_BINARY32)
+  // PR libstdc++/107468
+  float f;
+  char buf[] = "3.355447e+07";
+  std::fesetround(FE_DOWNWARD);
+  auto [ptr, ec] = std::from_chars(buf, buf + sizeof(buf) - 1, f, std::chars_format::scientific);
+  VERIFY( ec == std::errc() && ptr == buf + sizeof(buf) - 1 );
+  VERIFY( f == 33554472.0f );
+#endif
+}