[newlib-cygwin/main] Cygwin: Add UTF-8 surrogate fix to release messages

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=f21fbcaf583e1cadcbca9e094e269632bf0f2a9d

commit f21fbcaf583e1cadcbca9e094e269632bf0f2a9d
Author:     Corinna Vinschen <corinna@vinschen.de>
AuthorDate: Thu Jul 24 11:24:32 2025 +0200
Commit:     Corinna Vinschen <corinna@vinschen.de>
CommitDate: Thu Jul 24 11:24:32 2025 +0200

    Cygwin: Add UTF-8 surrogate fix to release messages
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/release/3.6.5 | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/winsup/cygwin/release/3.6.5 b/winsup/cygwin/release/3.6.5
index 3fbaa0c3a810..97bb39792652 100644
--- a/winsup/cygwin/release/3.6.5
+++ b/winsup/cygwin/release/3.6.5
@@ -12,3 +12,10 @@ Fixes:
 
 - Fix multi-thread safety of system().
   Addresses: https://cygwin.com/pipermail/cygwin/2025-June/258324.html
+
+- Revert fix handling of invalid 4 byte UTF-8 sequence. It was broken.
+  Addresses: https://cygwin.com/pipermail/cygwin/2025-July/258513.html
+
+- Instead, fix internal conversion of filenames in case of an invalid
+  4 byte UTF-8 sequence.
+  Addresses: https://cygwin.com/pipermail/cygwin/2025-June/258358.html