[Bug target/15872] New: h8300-hms-g++ generates wrong machine code when initializing static members of class templates

["gcc-bugzilla at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

The error is, that the c++ compiler of gcc 3.4.0 generates wrong machine code when initializing 
static members of class templates.

To demonstrate the error a test programm ( test.cc ) is translated to machine code  
for two targets (avr and h8300-hms).

This test program defines a class template 'Foo' with a static integer variable 'foovar' which
is initialized with '35'.

---------------------- test.cc ---------------------- 

1:	template<class T>
2:	struct Foo {
3:		static int foovar;
4:	};
5:
6:	template<class T>
7:	int Foo<T>::foovar=35;
8:
9:	int main(){
10:		return Foo<int>::foovar;
11:		}

----------------------------------------------------- 


Test Programm compiled with 'avr-g++ -S -o h8-test.s  test.cc' :

-------------------- avr-test.s --------------------- 

1:		.file	"test.cc"
2:		.arch avr2
3:	__SREG__ = 0x3f
4:	__SP_H__ = 0x3e
5:	__SP_L__ = 0x3d
6:	__tmp_reg__ = 0
7:	__zero_reg__ = 1
8:		.global __do_copy_data
9:		.global __do_clear_bss
10:		.text
11:	.global	main
12:		.type	main, @function
13:	main:
14:	/* prologue: frame size=0 */
15:		ldi r28,lo8(__stack - 0)
16:		ldi r29,hi8(__stack - 0)
17:		out __SP_H__,r29
18:		out __SP_L__,r28
19:	/* prologue end (size=4) */
20:		lds r24,_ZN3FooIiE6foovarE
21:		lds r25,(_ZN3FooIiE6foovarE)+1
22:	/* epilogue: frame size=0 */
23:		rjmp exit
24:	/* epilogue end (size=1) */
25:	/* function int main() size 9 (4) */
26:		.size	main, .-main
27:		.weak	_ZN3FooIiE6foovarE
28:		.data
29:		.type	_ZN3FooIiE6foovarE, @object
30:		.size	_ZN3FooIiE6foovarE, 2
31:	_ZN3FooIiE6foovarE:
32:		.word	35
33:	/* File "test.cc": code    9 = 0x0009 (   4), prologues   4, epilogues   1 */

----------------------------------------------------- 
In avr assembler output a label/address '_ZN3FooIiE6foovarE' for the correspondending symbol
is created in the .data section. 


Test Programm compiled with 'h8300-hms-g++ -S -o h8-test.s  test.cc' :

-------------------- h8-test.s ---------------------

1:		.file	"test.cc"
2:		.section .text
3:		.align 1
4:		.global _main
5:	_main:
6:		mov.w	r6,@-r7
7:		mov.w	r7,r6
8:		mov.w	@__ZN3FooIiE6foovarE,r2
9:		mov.w	r2,r0
10:		mov.w	@r7+,r6
11:		rts
12:		.end
13:		.ident	"GCC: (GNU) 3.4.0"
	
----------------------------------------------------- 

In h8300-hms assembler output the __ZN3FooIiE6foovarE is not defined and there doesn't exist an address in the
.data section.

The error does not occur when the static member variable (here: 'foovar') is not initialized. Then the compiler 
correctly creates a .comm symbol.

Environment:
System: Linux faui00a 2.4.25 #2 SMP Wed Feb 18 19:58:48 CET 2004 i686 unknown
Architecture: i686

host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: h8300-hitachi-hms
configured with: /tmp/gcc-dir/gcc-3.4.0/configure --enable-version-specific-runtime-libs --prefix=/proj/i4ciao/tools/gcc --enable-languages=c,c++ --target=h8300-hms

How-To-Repeat:
Compile a class template with a static member variable.

-- 
           Summary: h8300-hms-g++ generates wrong machine code when
                    initializing static members of class templates
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: georg dot blaschke at stud dot informatik dot uni-
                    erlangen dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: h8300-hitachi-hms


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15872