1 files changed, 4 insertions, 2 deletions
diff --git a/src/corelib/io/qtemporaryfile.cpp b/src/corelib/io/qtemporaryfile.cpp
index 55d13dad70..c016a622c7 100644
--- a/src/corelib/io/qtemporaryfile.cpp
+++ b/src/corelib/io/qtemporaryfile.cpp
@@ -284,8 +284,10 @@ createUnnamedFile(NativeFileHandle &file, QTemporaryFileName &tfn, quint32 mode,
         return CreateUnnamedFileStatus::NotSupported;
 
     const char *p = ".";
-    int lastSlash = tfn.path.lastIndexOf('/');
-    if (lastSlash != -1) {
+    QByteArray::size_type lastSlash = tfn.path.lastIndexOf('/');
+    if (lastSlash >= 0) {
+        if (lastSlash == 0)
+            lastSlash = 1;
         tfn.path[lastSlash] = '\0';
         p = tfn.path.data();
     }