re PR fortran/31214 (User-defined operator using entry leads to ICE)

2007-04-07  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/31214
	* trans-decl.c (gfc_get_symbol_decl): Allow unreferenced use
	associated symbols.

2007-04-07  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/31424
	* gfortran.dg/unreferenced_use_assoc_1.f90: New test.

From-SVN: r123642

gcc/fortran/ChangeLog

 2007-04-07  Paul Thomas  <pault@gcc.gnu.org>
 
+	PR fortran/31214
+	* trans-decl.c (gfc_get_symbol_decl): Allow unreferenced use
+	associated symbols.
+
+2007-04-07  Paul Thomas  <pault@gcc.gnu.org>
+
 	PR fortran/31293
 	* symbol.c (gfc_check_function_type): New function.
 	* gfortran.h : Add prototype for previous.

gcc/fortran/trans-decl.c

@@ -873,6 +873,7 @@ gfc_get_symbol_decl (gfc_symbol * sym)
   int byref;
 
   gcc_assert (sym->attr.referenced
+		|| sym->attr.use_assoc
 		|| sym->ns->proc_name->attr.if_source == IFSRC_IFBODY);
 
   if (sym->ns && sym->ns->proc_name->attr.function)

gcc/testsuite/ChangeLog

 2007-04-07  Paul Thomas  <pault@gcc.gnu.org>
 
+	PR fortran/31424
+	* gfortran.dg/unreferenced_use_assoc_1.f90: New test.
+
+2007-04-07  Paul Thomas  <pault@gcc.gnu.org>
+
 	PR fortran/31293
 	* gfortran.dg/interface_12.f90: New test.
 

gcc/testsuite/gfortran.dg/unreferenced_use_assoc_1.f90

+! { dg-do compile }
+! Tests the  fix for PR31424.
+!
+module InternalCompilerError
+
+   type Byte
+      private 
+      character(len=1)     :: singleByte
+   end type
+
+   type (Byte)             :: BytesPrototype(1)
+
+   type UserType
+      real :: r
+   end type
+
+contains
+
+   function UserTypeToBytes(user) result (bytes) 
+      type(UserType) :: user 
+      type(Byte)     :: bytes(size(transfer(user, BytesPrototype)))
+      bytes = transfer(user, BytesPrototype) 
+   end function
+
+   subroutine DoSomethingWithBytes(bytes)
+      type(Byte), intent(in)     :: bytes(:)
+   end subroutine
+
+end module
+
+
+program main
+   use InternalCompilerError
+   type (UserType) :: user 
+
+   ! The following line caused the ICE 
+   call DoSomethingWithBytes( UserTypeToBytes(user) )
+
+end program 
+! { dg-final { cleanup-modules "InternalCompilerError" } }