[PATCH] mingw: do not set errno to 0 on success
From: Erik Faye-Lund <hidden>
Date: 2016-06-15 22:50:05
Subsystem:
the rest · Maintainer:
Linus Torvalds
Currently do_lstat always sets errno to 0 on success. This incorrectly overwrites previous errors. Fetch the error-code into a temporary variable instead, and assign that to errno on failure. Signed-off-by: Erik Faye-Lund <redacted> --- A bug I found while hunting down another regression. maint-worthy, perhaps? compat/mingw.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/compat/mingw.c b/compat/mingw.c
index f2d9e1f..b98e600 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c@@ -195,9 +195,10 @@ static inline time_t filetime_to_time_t(const FILETIME *ft) */ static int do_lstat(const char *file_name, struct stat *buf) { + int err; WIN32_FILE_ATTRIBUTE_DATA fdata; - if (!(errno = get_file_attr(file_name, &fdata))) { + if (!(err = get_file_attr(file_name, &fdata))) { buf->st_ino = 0; buf->st_gid = 0; buf->st_uid = 0;
@@ -211,6 +212,7 @@ static int do_lstat(const char *file_name, struct stat *buf) buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); return 0; } + errno = err; return -1; }
--
1.7.3.2