[Bug fortran/11387] New: using stop without any argument

[Bug fortran/11387] New: using stop without any argument

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11387

           Summary: using stop without any argument
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at physics dot uc dot edu
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: powerpc-apple-darwin6.6

Using stop with any argument cause no data to be output in the asm which confusses the 
darwin's as:
/var/tmp//ccZrWjym.s:18:section difference relocatable subtraction expression, "LC0" 
minus "L00000000001$pb" using a symbol at the end of section will not produce an 
assembly time constant
/var/tmp//ccZrWjym.s:18:use a symbol with a constant value created with an assignment 
instead of the expression, L_const_sym = LC0 - L00000000001$pb
/var/tmp//ccZrWjym.s:17:section difference relocatable subtraction expression, "LC0" 
minus "L00000000001$pb" using a symbol at the end of section will not produce an 
assembly time constant
/var/tmp//ccZrWjym.s:17:use a symbol with a constant value created with an assignment 
instead of the expression, L_const_sym = LC0 - L00000000001$pb

The way to fix this would be output one byte so it would not confuse the Darwin's as.

Note that you need download the update to the compiler package to get the new version 
of as which has this error.
source:
        PROGRAM DUMB
        STOP
        END

[Bug fortran/11387] using stop without any argument

[dhazeghi at yahoo dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11387



------- Additional Comments From dhazeghi at yahoo dot com  2003-07-05 19:55 -------
Andrew, can you post the assembly (produced from this) that Apple's newer assembler doesn't 
like? Thanks.

[Bug fortran/11387] using stop without any argument

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11387



------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-05 19:59 -------
.data
.const
        .align 2
LC0:				<--- no is nothing below this!!!
.text
        .align 2
        .globl _MAIN__
_MAIN__:
        mflr r2
        bcl 20,31,"L00000000001$pb"
"L00000000001$pb":
        stw r31,-4(r1)
        li r4,0
        mflr r31
        stw r2,8(r1)
        stwu r1,-80(r1)
        addis r2,r31,ha16(LC0-"L00000000001$pb")   <---errors here
        la r3,lo16(LC0-"L00000000001$pb")(r2)   <---and here
        bl L_s_stop$stub

[Bug fortran/11387] using stop without any argument

[dhazeghi at yahoo dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11387


dhazeghi at yahoo dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |critical
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-07-05 20:18:54
               date|                            |


------- Additional Comments From dhazeghi at yahoo dot com  2003-07-05 20:18 -------
Confirmed then. Is this really a bug in gcc, or in the assembler? Whatever it is, it's going to cause a 
lot of people trouble, so updating to "critical" severity.

[Bug fortran/11387] using stop without any argument

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11387



------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-05 20:21 -------
In fact it already has, that is the reason why I reported it, someone on the darwin-
development list found it.

[Bug fortran/11387] using stop without any argument

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11387


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-27 06:41 -------
Fixed by:
2003-07-26  Geoffrey Keating

        * varasm.c (output_constant_def_contents): Use
        ASM_DECLARE_CONSTANT_NAME if defined.
        * doc/tm.texi (Label Output): Document ASM_DECLARE_CONSTANT_NAME.
        * config/darwin.h (ASM_DECLARE_OBJECT_NAME): Ensure zero-sized
        objects get at least one byte to prevent assembler problems.
        (ASM_DECLARE_CONSTANT_NAME): New.