Small improvements around C/C++ testing (#1017)

* * Simplify some of test code around CPPCompiler
* Test using 'callable' with pass-through
* Small cpu doc improvements

* Improvements to Clang output parsing.

* Remove temporary file (base filename) .

* Improve handling of external errors - handle severity.

* On error dumping out to 'actual' file for runCPPCompilerCompile.

* Small fixes.
Set the source language type correctly for pass thru.

* Remove warning for test for clang backend c

1 files changed, 24 insertions, 0 deletions

diff --git a/tests/cpp-compiler/c-compile-pass-through-shared-library.c b/tests/cpp-compiler/c-compile-pass-through-shared-library.c
new file mode 100644
index 000000000..9f33bc430
--- /dev/null
+++ b/tests/cpp-compiler/c-compile-pass-through-shared-library.c
@@ -0,0 +1,24 @@
+//TEST(smoke,shared-library):CPP_COMPILER_COMPILE: -pass-through c -entry test -target callable
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>   
+   
+#if defined(_MSC_VER)
+#   define DLL_EXPORT __declspec(dllexport)
+#else  
+#   define DLL_EXPORT  __attribute__((__visibility__("default")))
+#endif    
+
+#ifdef __cplusplus    
+#define EXTERN_C extern "C"
+#else
+#define EXTERN_C 
+#endif    
+    
+EXTERN_C DLL_EXPORT int test(int intValue, const char* textValue, char* outTextValue)
+{
+    strcpy(outTextValue, textValue);
+    return intValue;
+}
+