bootstrap/7389: bad declaration of flow_bb_inside_loop_p

bootstrap/7389: bad declaration of flow_bb_inside_loop_p

[snyder]

>Number:         7389
>Category:       bootstrap
>Synopsis:       bad declaration of flow_bb_inside_loop_p
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jul 23 21:16:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     
>Release:        3.2 20020718 (experimental)
>Organization:
>Environment:
System: OSF1 d0ola.fnal.gov V5.1 732 alpha
Machine: alpha
	
host: alpha-dec-osf5.1
build: alpha-dec-osf5.1
target: alpha-dec-osf5.1
configured with: ../gcc/configure --prefix=/scratch/snyder/gcc/inst --enable-languages=c,c++,f77 --enable-threads=posix --enable-long-long
>Description:

When i try to bootstrap the current cvs version of gcc on tru64 (5.1),
i get this error:

cc: Error: ../../gcc/gcc/cfgloop.c, line 956: In the definition of the function "flow_bb_inside_loop_p", the promoted type of bb is incompatible with the type of the corresponding parameter in a prior declaration. (promotmatch)
     const basic_block bb;

The configuration was as shown above.
The C compiler version is

Compaq C V6.3-029 on Compaq Tru64 UNIX V5.1 (Rev. 732)
Compiler Driver V6.3-029 (sys) cc Driver


Indeed, the declaration in basic_block.h is

extern bool flow_bb_inside_loop_p       PARAMS ((const struct loop *, basic_block));

and the definition in cfgloop.c is

bool
flow_bb_inside_loop_p (loop, bb)
     const struct loop *loop;
     const basic_block bb;
{


So there's a constness difference in the second argument.
Adding a const to the prototype fixes the problem (patch below).



>How-To-Repeat:

See above.

>Fix:

2002-07-23  scott snyder  <snyder@fnal.gov>

	* basic-block.h: Add `const' to the second argument of
	flow_bb_inside_loop_p.

Index: basic-block.h
===================================================================
RCS file: /cvsroot/gcc/gcc/gcc/basic-block.h,v
retrieving revision 1.156
diff -u -c -r1.156 basic-block.h
*** basic-block.h	15 Jul 2002 14:07:05 -0000	1.156
--- basic-block.h	23 Jul 2002 22:16:51 -0000
***************
*** 722,728 ****
  extern void verify_flow_info		PARAMS ((void));
  extern bool flow_loop_outside_edge_p	PARAMS ((const struct loop *, edge));
  extern bool flow_loop_nested_p PARAMS ((const struct loop *, const struct loop *));
! extern bool flow_bb_inside_loop_p       PARAMS ((const struct loop *, basic_block));
  extern basic_block *get_loop_body       PARAMS ((const struct loop *));
  extern int dfs_enumerate_from           PARAMS ((basic_block, int,
  				         bool (*)(basic_block, void *),
--- 722,728 ----
  extern void verify_flow_info		PARAMS ((void));
  extern bool flow_loop_outside_edge_p	PARAMS ((const struct loop *, edge));
  extern bool flow_loop_nested_p PARAMS ((const struct loop *, const struct loop *));
! extern bool flow_bb_inside_loop_p       PARAMS ((const struct loop *, const basic_block));
  extern basic_block *get_loop_body       PARAMS ((const struct loop *));
  extern int dfs_enumerate_from           PARAMS ((basic_block, int,
  				         bool (*)(basic_block, void *),

>Release-Note:
>Audit-Trail:
>Unformatted:

Re: bootstrap/7389: bad declaration of flow_bb_inside_loop_p

[sayle]

Synopsis: bad declaration of flow_bb_inside_loop_p

State-Changed-From-To: analyzed->closed
State-Changed-By: sayle
State-Changed-When: Sun Mar  2 01:17:09 2003
State-Changed-Why:
    This should now be fixed on both mainline and the 3.3 branch
    with my previous patches.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7389

Re: bootstrap/7389: bad declaration of flow_bb_inside_loop_p

[ebotcazou]

Synopsis: bad declaration of flow_bb_inside_loop_p

Responsible-Changed-From-To: unassigned->sayle
Responsible-Changed-By: ebotcazou
Responsible-Changed-When: Sat Feb 22 22:13:05 2003
Responsible-Changed-Why:
    Fixed it on mainline.
State-Changed-From-To: open->analyzed
State-Changed-By: ebotcazou
State-Changed-When: Sat Feb 22 22:13:05 2003
State-Changed-Why:
    Confirmed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7389