Backport #1916 [ruby-core:24838]; (rb_sysopen): workaround for MSVCRT's bug. Should fix the original bug report which was: File.open crashes when flags File::RDONLY | File::APPEND are passed.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_6@26455 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/io.c b/io.c
index 4d930a02cc..360cbd4b97 100644
--- a/io.c
+++ b/io.c
@@ -2791,10 +2791,16 @@ rb_sysopen(fname, flags, mode)
 {
     int fd;
 
+#ifdef _WIN32
+    errno = EINVAL;
+#endif
     fd = open(fname, flags, mode);
     if (fd < 0) {
 	if (errno == EMFILE || errno == ENFILE) {
 	    rb_gc();
+#ifdef _WIN32
+	    errno = EINVAL;
+#endif
 	    fd = open(fname, flags, mode);
 	}
 	if (fd < 0) {