[gcc r13-7559] libstdc++: Check conversion from filesystem::path to wide strings [PR95048]

[Jonathan Wakely]

https://gcc.gnu.org/g:db179779c9416cebb646758d276744f78536cc25

commit r13-7559-gdb179779c9416cebb646758d276744f78536cc25
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed Jul 12 14:40:19 2023 +0100

    libstdc++: Check conversion from filesystem::path to wide strings [PR95048]
    
    The testcase added for this bug only checks conversion from wide strings
    on construction, but the fix also covered conversion to wide strings via
    path::wstring(). Add checks for that, and u16string() and u32string().
    
    libstdc++-v3/ChangeLog:
    
            PR libstdc++/95048
            * testsuite/27_io/filesystem/path/construct/95048.cc: Check
            conversions to wide strings.
            * testsuite/experimental/filesystem/path/construct/95048.cc:
            Likewise.
    
    (cherry picked from commit d6384ad1a9ab7ea46990a7ed1299d5a2be4acece)

Diff:
---
 libstdc++-v3/testsuite/27_io/filesystem/path/construct/95048.cc     | 6 ++++++
 .../testsuite/experimental/filesystem/path/construct/95048.cc       | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/libstdc++-v3/testsuite/27_io/filesystem/path/construct/95048.cc b/libstdc++-v3/testsuite/27_io/filesystem/path/construct/95048.cc
index c1a382d1420..cd80d668b23 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/path/construct/95048.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/path/construct/95048.cc
@@ -16,6 +16,8 @@ test_wide()
   VERIFY( CHECK(L, "\U0001F4C1") ); // folder
   VERIFY( CHECK(L, "\U0001F4C2") ); // open folder
   VERIFY( CHECK(L, "\U0001F4C4") ); // filing cabient
+
+  VERIFY( path(u8"\U0001D11E").wstring() == L"\U0001D11E" ); // G Clef
 }
 
 void
@@ -25,6 +27,8 @@ test_u16()
   VERIFY( CHECK(u, "\U0001F4C1") ); // folder
   VERIFY( CHECK(u, "\U0001F4C2") ); // open folder
   VERIFY( CHECK(u, "\U0001F4C4") ); // filing cabient
+
+  VERIFY( path(u8"\U0001D11E").u16string() == u"\U0001D11E" ); // G Clef
 }
 
 void
@@ -34,6 +38,8 @@ test_u32()
   VERIFY( CHECK(U, "\U0001F4C1") ); // folder
   VERIFY( CHECK(U, "\U0001F4C2") ); // open folder
   VERIFY( CHECK(U, "\U0001F4C4") ); // filing cabient
+
+  VERIFY( path(u8"\U0001D11E").u32string() == U"\U0001D11E" ); // G Clef
 }
 
 int
diff --git a/libstdc++-v3/testsuite/experimental/filesystem/path/construct/95048.cc b/libstdc++-v3/testsuite/experimental/filesystem/path/construct/95048.cc
index b7a93f3c985..fc65bfecd4d 100644
--- a/libstdc++-v3/testsuite/experimental/filesystem/path/construct/95048.cc
+++ b/libstdc++-v3/testsuite/experimental/filesystem/path/construct/95048.cc
@@ -18,6 +18,8 @@ test_wide()
   VERIFY( CHECK(L, "\U0001F4C1") ); // folder
   VERIFY( CHECK(L, "\U0001F4C2") ); // open folder
   VERIFY( CHECK(L, "\U0001F4C4") ); // filing cabient
+
+  VERIFY( path(u8"\U0001D11E").wstring() == L"\U0001D11E" ); // G Clef
 }
 
 void
@@ -27,6 +29,8 @@ test_u16()
   VERIFY( CHECK(u, "\U0001F4C1") ); // folder
   VERIFY( CHECK(u, "\U0001F4C2") ); // open folder
   VERIFY( CHECK(u, "\U0001F4C4") ); // filing cabient
+
+  VERIFY( path(u8"\U0001D11E").u16string() == u"\U0001D11E" ); // G Clef
 }
 
 void
@@ -36,6 +40,8 @@ test_u32()
   VERIFY( CHECK(U, "\U0001F4C1") ); // folder
   VERIFY( CHECK(U, "\U0001F4C2") ); // open folder
   VERIFY( CHECK(U, "\U0001F4C4") ); // filing cabient
+
+  VERIFY( path(u8"\U0001D11E").u32string() == U"\U0001D11E" ); // G Clef
 }
 
 int