Use C as fallback type if in C preprocessor mode.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127769 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
index 572323a..f713fa0 100644
--- a/lib/Driver/Driver.cpp
+++ b/lib/Driver/Driver.cpp
@@ -725,14 +725,19 @@
Diag(clang::diag::err_drv_unknown_stdin_type);
Ty = types::TY_C;
} else {
- // Otherwise lookup by extension, and fallback to ObjectType if not
- // found. We use a host hook here because Darwin at least has its own
+ // Otherwise lookup by extension.
+ // Fallback is C if invoked as C preprocessor or Object otherwise.
+ // We use a host hook here because Darwin at least has its own
// idea of what .s is.
if (const char *Ext = strrchr(Value, '.'))
Ty = TC.LookupTypeForExtension(Ext + 1);
- if (Ty == types::TY_INVALID)
- Ty = types::TY_Object;
+ if (Ty == types::TY_INVALID) {
+ if (CCCIsCPP)
+ Ty = types::TY_C;
+ else
+ Ty = types::TY_Object;
+ }
// If the driver is invoked as C++ compiler (like clang++ or c++) it
// should autodetect some input files as C++ for g++ compatibility.