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Date: Sun, 04 Nov 2001 02:47:00 -0000
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Subject: c++/4884: g++ 3.0.2 problem with -fvolatile
X-SW-Source: 2001-11/txt/msg00093.txt.bz2
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>Number:         4884
>Category:       c++
>Synopsis:       g++ 3.0.2 problem with -fvolatile
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Thu Nov 15 12:26:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     Ashif Harji
>Release:        gcc version 3.0.2
>Organization:
>Environment:
operating system version: Redhat 7.1
hardware architecture: athalon 1.4 ghz
>Description:
I am having a problem with g++ 3.0.2 using -fvolatile.

1>@awk[114]% g++ -v
Reading specs from /u/asharji/gcc/gcc302/bin/../lib/gcc-lib/i686-pc-linux-gnu/3.0.2/specs
Configured with: /u/asharji/gcc/gcc-3.0.2/configure --prefix=/u/asharji/gcc/gcc302/
Thread model: single
gcc version 3.0.2

When I compile without -fvolatile, it works:

1>@awk[117]% g++ test1.cc -c

But not when I compile with -fvolatile:

1>@awk[118]% g++ test1.cc -c -fvolatile
test1.cc: In member function `void foo::mem()':
test1.cc:14: Internal error #20000521.
test1.cc:14: Internal compiler error in build_new_1, at cp/init.c:2426
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.


This error does not occur with gcc-2.95.3:

@tcl[104]% g++ -v
Reading specs from /u/asharji/gcc/lib/gcc-lib/i686-pc-linux-gnu/2.95.3/specs
gcc version 2.95.3 20010315 (release)

@tcl[110]% g++ test1.cc -c

@tcl[111]% g++ test1.cc -c -fvolatile

@tcl[112]% 
>How-To-Repeat:
1>@awk[113]% cat test1.cc 

typedef unsigned int size_t;

class bar {
    int i;
  public :
    void * operator new ( size_t , void * storage );
};

class foo {
    int storage[ 5 ];
  public:
    void mem ( ) {
        bar *s = new ( ( void * ) & storage ) bar;
    }
};

1>@awk[118]% g++ test1.cc -c -fvolatile
>Fix:

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