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, 62 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/dfp/struct-union.c b/gcc/testsuite/gcc.dg/dfp/struct-union.c
new file mode 100644
index 000000000..956fdcf21
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/dfp/struct-union.c
@@ -0,0 +1,62 @@
+/* { dg-do compile } */
+/* { dg-options "-O -Wall" } */
+
+/* C99 6.5.2.3 Structure and union members.
+   If the first expression has qualified type, the result has the so-qualified 
+   version of the type of the designated member.  */
+
+struct s {_Decimal32 d32; const _Decimal64 d64;};
+struct sv { volatile _Decimal32 d32; volatile _Decimal64 d64; };
+union u 
+{
+  const _Decimal64 d64; 
+  _Decimal32 d32; 
+  const struct s cs;
+};
+
+struct s s;
+struct sv sv;
+const struct s cs;
+
+union u u;
+const union u cu;
+
+struct s g (struct s s)
+{
+  return s;
+}
+
+union u h (union u u)
+{
+  return u;
+}
+
+void f()
+{
+  cs.d32 = 1.23dd; /* { dg-error "assignment of member 'd32' in read-only object" } */
+  cs.d64 = 1.23df; /* { dg-error "assignment of member 'd64' in read-only object" } */
+  s.d64 = 1.23df;  /* { dg-error "assignment of read-only member" } */
+
+  s.d32 = 1.23dd;
+  u.d32 = 1.23dd;
+
+  u.d64 = 1.23df;    /* { dg-error "assignment of read-only member" } */
+  u.cs.d32 = 1.23dd; /* { dg-error "assignment of member 'd32' in read-only object" } */
+  u.cs.d64 = 1.23df; /* { dg-error "assignment of member 'd64' in read-only object" } */
+  
+  cu.d32 = 1.23dd;   /* { dg-error "assignment of member 'd32' in read-only object" } */
+
+  cu.d64 = 1.23df;    /* { dg-error "assignment of member 'd64' in read-only object" } */
+  cu.cs.d32 = 1.23dd; /* { dg-error "assignment of member 'd32' in read-only object" } */
+  cu.cs.d64 = 1.23df; /* { dg-error "assignment of member 'd64' in read-only object" } */
+
+  /* f().x is a valid postfix expression but is not an lvalue if 
+     function f() returning a structure or union.  */
+  g(s).d32 = 1.23dd;  /* { dg-error "lvalue required" } */
+  h(u).d64 = 1.23df;  /* { dg-error "lvalue required" } */
+
+  /* Test assignment to volatile structure members.  */
+  sv.d32 = 1.1df;
+  sv.d64 = 1.1dd;
+}
+