re PR libffi/41908 (closures fail for some structure arguments containing floats)

2009-11-02  Andreas Tobler  <a.tobler@schweiz.org>

	PR libffi/41908
	* testsuite/libffi.call/testclosure.c: New test.

From-SVN: r153824

libffi/ChangeLog

+2009-11-02  Andreas Tobler  <a.tobler@schweiz.org>
+
+	PR libffi/41908
+	* testsuite/libffi.call/testclosure.c: New test.
+
 2009-09-28  Kai Tietz  <kai.tietz@onevision.com>
 
 	* src/x86/win64.S (_ffi_call_win64 stack): Remove for gnu

libffi/testsuite/libffi.call/testclosure.c

+/* Area:	closure_call
+   Purpose:	Check return value float.
+   Limitations:	none.
+   PR:		41908.
+   Originator:	<rfm@gnu.org> 20091102	 */
+
+/* { dg-do run } */
+#include "ffitest.h"
+
+typedef struct cls_struct_combined {
+  float a;
+  float b;
+  float c;
+  float d;
+} cls_struct_combined;
+
+void cls_struct_combined_fn(struct cls_struct_combined arg)
+{
+  printf("%g %g %g %g\n",
+	 arg.a, arg.b,
+	 arg.c, arg.d);
+  fflush(stdout);
+}
+
+static void
+cls_struct_combined_gn(ffi_cif* cif __UNUSED__, void* resp __UNUSED__,
+        void** args, void* userdata __UNUSED__)
+{
+  struct cls_struct_combined a0;
+
+  a0 = *(struct cls_struct_combined*)(args[0]);
+
+  cls_struct_combined_fn(a0);
+}
+
+
+int main (void)
+{
+  ffi_cif cif;
+  void *code;
+  ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
+  ffi_type* cls_struct_fields0[5];
+  ffi_type cls_struct_type0;
+  ffi_type* dbl_arg_types[5];
+
+  cls_struct_type0.size = 0;
+  cls_struct_type0.alignment = 0;
+  cls_struct_type0.type = FFI_TYPE_STRUCT;
+  cls_struct_type0.elements = cls_struct_fields0;
+
+  struct cls_struct_combined g_dbl = {4.0, 5.0, 1.0, 8.0};
+
+  cls_struct_fields0[0] = &ffi_type_float;
+  cls_struct_fields0[1] = &ffi_type_float;
+  cls_struct_fields0[2] = &ffi_type_float;
+  cls_struct_fields0[3] = &ffi_type_float;
+  cls_struct_fields0[4] = NULL;
+
+  dbl_arg_types[0] = &cls_struct_type0;
+  dbl_arg_types[1] = NULL;
+
+  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1, &ffi_type_void,
+		     dbl_arg_types) == FFI_OK);
+
+  CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_combined_gn, NULL, code) == FFI_OK);
+
+  ((void(*)(cls_struct_combined)) (code))(g_dbl);
+  /* { dg-output "4 5 1 8" } */
+  exit(0);
+}