clang-cl: Better error message when trying to compile stdin (PR18640)
We should suggest using /Tc or /Tp to set the input type, instead of
erroneously suggesting -x, which isn't a clang-cl flag.
llvm-svn: 200362
diff --git a/clang/test/Driver/cl-inputs.c b/clang/test/Driver/cl-inputs.c
index d6ee520..066e0e3 100644
--- a/clang/test/Driver/cl-inputs.c
+++ b/clang/test/Driver/cl-inputs.c
@@ -33,3 +33,11 @@
// WARN: warning: overriding '/TC' option with '/TP'
// WARN: note: The last /TC or /TP option takes precedence over earlier instances
// WARN-NOT: note
+
+// RUN: not %clang_cl - 2>&1 | FileCheck -check-prefix=STDIN %s
+// STDIN: error: use /Tc or /Tp
+
+// RUN: %clang_cl -### /Tc - 2>&1 | FileCheck -check-prefix=STDINTc %s
+// STDINTc: "-x" "c"
+
+void f();