Fix off by one.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137915 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index fa0db2cd51d03b828d33783f490a97e8f11b21a2..36affd6494d62bdcc9a648d7783e211bfce4b6d2 100644 (file)
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -2451,7 +2451,7 @@ void darwin::CC1::RemoveCC1UnsupportedArgs(ArgStringList &CmdArgs) const {
     const char *Option = *it;
 
     // We only remove warning options.
-    if (!strncmp(Option, "-W", 3)) {
+    if (!strncmp(Option, "-W", 2)) {
       ++it;
       continue;
     }