https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=14216d5442e04f23f20318b434b3f2bc4c43ca90
commit 14216d5442e04f23f20318b434b3f2bc4c43ca90 Author: Corinna Vinschen <[email protected]> AuthorDate: Tue Apr 9 22:30:03 2024 +0200 Commit: Corinna Vinschen <[email protected]> CommitDate: Tue Apr 9 22:30:34 2024 +0200 Cygwin: globify: read full 32 bit character While commit 0321fb573654 ("Cygwin: glob: convert wchar_t to wint_t") switched the entire glob mechanism from wchar_t to wint_t, the globify function calling glob on a DOS command line did not catch up and only checked for the next character constituting a 16 bit wchar_t. This broke reading surrogate pairs from incoming DOS command lines if the string had to go through glob(3). Check for an entire 32 bit unicode char instead. Fixes: 0321fb573654 ("Cygwin: glob: convert wchar_t to wint_t") Reported-by: David Allsopp <[email protected]> Signed-off-by: Corinna Vinschen <[email protected]> Diff: --- winsup/cygwin/dcrt0.cc | 3 ++- winsup/cygwin/release/3.5.4 | 4 ++++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc index ea6a18b51d70..ff7e6ec50f54 100644 --- a/winsup/cygwin/dcrt0.cc +++ b/winsup/cygwin/dcrt0.cc @@ -236,12 +236,13 @@ globify (char *word, char **&argv, int &argc, int &argvlen) char quote = *s; while (*++s && *s != quote) { + mbstate_t mbs = { 0 }; if (dos_spec || *s != '\\') /* nothing */; else if (s[1] == quote || s[1] == '\\') s++; *p++ = '\\'; - size_t cnt = isascii (*s) ? 1 : mbtowc (NULL, s, MB_CUR_MAX); + size_t cnt = isascii (*s) ? 1 : mbrtowi (NULL, s, MB_CUR_MAX, &mbs); if (cnt <= 1 || cnt == (size_t)-1) *p++ = *s; else diff --git a/winsup/cygwin/release/3.5.4 b/winsup/cygwin/release/3.5.4 index e2bd025317e9..e1909865f362 100644 --- a/winsup/cygwin/release/3.5.4 +++ b/winsup/cygwin/release/3.5.4 @@ -4,3 +4,7 @@ Fixes: - Fix regression in 3.5.3 which fails to open files for stat(2) if the file is opened exclusively by another process. Addresses: https://cygwin.com/pipermail/cygwin/2024-April/255811.html + +- Fix regression introduced in 3.5.0 when reading surrogate pairs (i.e., + unicode chars >= 0x10000) from the DOS command line. Addresses: + https://cygwin.com/pipermail/cygwin/2024-April/255807.html
