obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 58 insertions, 0 deletions

diff --git a/libffi/testsuite/libffi.call/float2.c b/libffi/testsuite/libffi.call/float2.c
new file mode 100644
index 000000000..a0b296cf4
--- /dev/null
+++ b/libffi/testsuite/libffi.call/float2.c
@@ -0,0 +1,58 @@
+/* Area:	ffi_call
+   Purpose:	Check return value long double.
+   Limitations:	none.
+   PR:		none.
+   Originator:	From the original ffitest.c  */
+
+/* { dg-excess-errors "fails" { target x86_64-*-mingw* x86_64-*-cygwin* } } */
+/* { dg-do run { xfail x86_64-*-mingw* x86_64-*-cygwin* } } */
+
+#include "ffitest.h"
+#include "float.h"
+
+static long double ldblit(float f)
+{
+  return (long double) (((long double) f)/ (long double) 3.0);
+}
+
+int main (void)
+{
+  ffi_cif cif;
+  ffi_type *args[MAX_ARGS];
+  void *values[MAX_ARGS];
+  float f;
+  long double ld;
+
+  args[0] = &ffi_type_float;
+  values[0] = &f;
+
+  /* Initialize the cif */
+  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
+		     &ffi_type_longdouble, args) == FFI_OK);
+
+  f = 3.14159;
+
+#if 1
+  /* This is ifdef'd out for now. long double support under SunOS/gcc
+     is pretty much non-existent.  You'll get the odd bus error in library
+     routines like printf().  */
+  printf ("%Lf\n", ldblit(f));
+#endif
+  ld = 666;
+  ffi_call(&cif, FFI_FN(ldblit), &ld, values);
+
+#if 1
+  /* This is ifdef'd out for now. long double support under SunOS/gcc
+     is pretty much non-existent.  You'll get the odd bus error in library
+     routines like printf().  */
+  printf ("%Lf, %Lf, %Lf, %Lf\n", ld, ldblit(f), ld - ldblit(f), LDBL_EPSILON);
+#endif
+
+  /* These are not always the same!! Check for a reasonable delta */
+  if (ld - ldblit(f) < LDBL_EPSILON)
+    puts("long double return value tests ok!");
+  else
+    CHECK(0);
+
+  exit(0);
+}