re PR lto/41921 (Cross language don't work with typedef unnamed structs)

2010-06-03  Richard Guenther  <rguenther@suse.de>

	PR lto/41921
	* lib/lto.exp: Always load gcc.exp.
	(lto-obj): For C source files invoke gcc_target_compile.
	* g++.dg/lto/20100603-1_0.C: New testcase.
	* g++.dg/lto/20100603-1_1.c: Likewise.

From-SVN: r160226

gcc/testsuite/ChangeLog

+2010-06-03  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41921
+	* lib/lto.exp: Always load gcc.exp.
+	(lto-obj): For C source files invoke gcc_target_compile.
+	* g++.dg/lto/20100603-1_0.C: New testcase.
+	* g++.dg/lto/20100603-1_1.c: Likewise.
+
 2010-06-03  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR tree-optimization/43688

gcc/testsuite/g++.dg/lto/20100603-1_0.C

+/* { dg-lto-do link } */
+
+extern "C" {
+    typedef struct {} CvImage;
+    extern CvImage* Cv_ImageNew(void);
+}
+void __attribute__((noinline,noclone))
+_Raytrace(CvImage* LImage) { __asm volatile (""); }
+int main(int LArgC, char** LArgV) 
+{
+  CvImage* LImage = Cv_ImageNew();
+  _Raytrace(LImage);
+}
+

gcc/testsuite/g++.dg/lto/20100603-1_1.c

+typedef struct {} CvImage;
+CvImage* Cv_ImageNew(void) { }