RH 7 g++ inheritance problem

RH 7 g++ inheritance problem

[tmwg-gcc]

This is from the RPM that Red Hat has on their site, version 2.96 20000724
(experimental) plus a bunch of patches, compiled on i686 linux.


This source:


class A {
};
class B : private A {
};
class C : protected B {
	public:
		static A a;
};
static A a;


gives this message:

/tmp/private.cc:1: `class A' is inaccessible
/tmp/private.cc:7: within this context



That doesn't make sense to me. Of course, it may not be that way in a later
snapshot. I can't keep up with the snapshots any more; they haven't been
stable enough to really even offer bug reports for as a compiler layman.
>From David.Billinghurst@riotinto.com Wed Aug 09 18:24:00 2000
From: "Billinghurst, David (CRTS)" <David.Billinghurst@riotinto.com>
To: "'gcc-bugs@gcc.gnu.org'" <gcc-bugs@gcc.gnu.org>
Subject: Long compile time for testsuite g++.other/headers1.C with enable-checking
Date: Wed, 09 Aug 2000 18:24:00 -0000
Message-id: <A9E96A79C068D211A6A90000C07BDF0D88F1E8@crtsmail.crts.techaust.riotinto.com.au>
X-SW-Source: 2000-08/msg00201.html
Content-length: 318

I have been following up --enable-checking=tree,misc,gc,gcac testsuite
failures on irix6.5. The failure of g++.other/headers1.C is due to a
timeout.  This test is taking 882s to compile on an unloaded r10k processor.
CPU bound, as it was getting 99+% of CPU and only required about 14MB of
memory.  Is this a problem?
>From David.Billinghurst@riotinto.com Wed Aug 09 19:45:00 2000
From: "Billinghurst, David (CRTS)" <David.Billinghurst@riotinto.com>
To: "'gcc-bugs@gcc.gnu.org'" <gcc-bugs@gcc.gnu.org>
Subject: g++ ICE with --enable-checking at ggc-page.c:341
Date: Wed, 09 Aug 2000 19:45:00 -0000
Message-id: <A9E96A79C068D211A6A90000C07BDF0D88F1E9@crtsmail.crts.techaust.riotinto.com.au>
X-SW-Source: 2000-08/msg00202.html
Content-length: 2389

I have been following up --enable-checking=tree,misc,gc,gcac testsuite
failures on irix6.5.

The failure  g++.old-deja/g++.law/operators24.C:13: Internal error:
Segmentation fault.

seems to occur at in ggc_set_mark at ggc-page.c:341. The reduced test case

typedef int ptrdiff_t;
typedef unsigned int size_t;
struct Link {
  void* operator new(size_t, int);
  friend void* __builtin_new(size_t);
};
void f() { new(2) Link; }

gives

Starting program:
/exd4/billingd/obj/egcs-20000807-enable-checking/gcc/testsuite/../cc1plus
bug.ii  -ansi -Wno-long-long -pedantic-errors -ansi -version  -o
operators24.s
GNU C++ version 2.96 20000807 (experimental) (mips-sgi-irix6.5) compiled by
GNU C version 2.96 20000807 (experimental).
options passed:  -ansi -Wno-long-long -pedantic-errors -ansi
options enabled:  -fpeephole -ffunction-cse -fkeep-static-consts
 -freg-struct-return -fsched-interblock -fsched-spec -fbranch-count-reg
 -fpic -fexceptions -fnew-exceptions -fcommon -fgnu-linker -fargument-alias
 -fident -fmath-errno -mfp64 -mgp64 -mabicalls -meb -mcpu=4000
 {GC 112k -> 80k} {GC 81k -> 81k} {GC 88k -> 
Program received signal SIGSEGV, Segmentation fault.
0x10319a4c in ggc_set_mark (p=0xaa)
    at /exd4/billingd/src/egcs-20000807/gcc/ggc-page.c:341
341       return base[L1][L2];
(gdb) where
#0  0x10319a4c in ggc_set_mark (p=0xaa)
    at /exd4/billingd/src/egcs-20000807/gcc/ggc-page.c:341
#1  0x1007c974 in lang_mark_tree (t=0x4048580)
    at /exd4/billingd/src/egcs-20000807/gcc/cp/decl.c:14997
#2  0x103051c8 in ggc_mark_trees ()
    at /exd4/billingd/src/egcs-20000807/gcc/ggc-common.c:420
#3  0x10303210 in ggc_mark_roots ()
    at /exd4/billingd/src/egcs-20000807/gcc/ggc-common.c:195
#4  0x1031a254 in ggc_collect ()
    at /exd4/billingd/src/egcs-20000807/gcc/ggc-page.c:1124
#5  0x10106bf0 in yyparse ()
    at /exd4/billingd/src/egcs-20000807/gcc/cp/parse.y:451
#6  0x101a2f1c in compile_file (name=0x40292b8 "bug.ii")
    at /exd4/billingd/src/egcs-20000807/gcc/toplev.c:2296
#7  0x101a8c68 in main (argc=9, argv=0x7fff2f14)
    at /exd4/billingd/src/egcs-20000807/gcc/toplev.c:4774
(gdb) 


Can persue it, but will need step by step instructions.

+++++++++++++++++++++++++++++++++++++++++
(Mr) David Billinghurst
Comalco Research Centre
PO Box 316, Thomastown, Vic, Australia, 3074
Phone:	+61 3 9469 0642
FAX:	+61 3 9462 2700
Email:	David.Billinghurst@riotinto.com