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-rw-r--r--src/os_mswin.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/os_mswin.c b/src/os_mswin.c
index 360c456e5c..b6393db5ab 100644
--- a/src/os_mswin.c
+++ b/src/os_mswin.c
@@ -389,6 +389,8 @@ mch_isFullName(char_u *fname)
// Another way to check is to use mch_FullName() and see if the result is
// the same as the name or mch_FullName() fails. However, this has quite a
// bit of overhead, so let's not do that.
+ if (*fname == NUL)
+ return TRUE;
return ((ASCII_ISALPHA(fname[0]) && fname[1] == ':'
&& (fname[2] == '/' || fname[2] == '\\'))
|| (fname[0] == fname[1] && (fname[0] == '/' || fname[0] == '\\')));