objc/6430: Obj-C dwarf2out crash with -ggdb3 and protocols

[mikpos at shaw dot ca]

>Number:         6430
>Category:       objc
>Synopsis:       Obj-C dwarf2out crash with -ggdb3 and protocols
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Tue Apr 23 09:26:07 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     mike burrell
>Release:        3.0.4
>Organization:
>Environment:
System: Linux pillo 2.4.17 #23 Thu Jan 17 17:41:02 MST 2002 i586 unknown
Architecture: i586

	
host: i586-pc-linux-gnu
build: i586-pc-linux-gnu
target: i586-pc-linux-gnu
configured with: ../gcc-3.0.4/configure --prefix=/usr --enable-shared --with-gnu-as --with-gnu-ld
>Description:
Attached sidebar.m, when compiled with 'gcc sidebar.m -c -ggdb3', gives the
following error:
sidebar.m:74: Internal compiler error in dwarf2out_finish, at dwarf2out.c:11277
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
>How-To-Repeat:
sidebar.mi follows (as created by gcc -v -save-temps):
-------------------------------------------------------
# 1 "sidebar.m"
typedef struct objc_class *MetaClass;
typedef struct objc_class *Class;
struct objc_class {
  MetaClass class_pointer;

  struct objc_class* super_class;

  const char* name;
  long version;
  unsigned long info;

  long instance_size;

  struct objc_ivar_list* ivars;

  struct objc_method_list* methods;

  struct sarray * dtable;

  struct objc_class* subclass_list;
  struct objc_class* sibling_class;

  struct objc_protocol_list *protocols;
  void* gc_object_type;
};

@class NSInvocation;

@interface NSObject
@end
@interface NSView
@end

@interface Token : NSObject
@end

@protocol DocumentDelegate
- (void)molestedDocumentWithMessage: (NSInvocation *)msg;
- (void)molestedGrammarWithMessage: (NSInvocation *)msg;
- (void)destroyedDocument;
- (void)destroyedGrammar;
- (void)highlightedToken: (Token *)t;
- (void)highlightedGrammar: (Class)c;
@end

@interface Sidebar : NSView <DocumentDelegate>
@end

@implementation Sidebar
- (void)molestedDocumentWithMessage: (NSInvocation *)m
{
}

- (void)molestedGrammarWithMessage: (NSInvocation *)m
{
}

- (void)destroyedDocument
{
}

- (void)destroyedGrammar
{
}

- (void)highlightedToken: (Token *)t
{
}

- (void)highlightedGrammar: (Class)c
{
}
@end

output of gcc -v -save-temps:
------------------------------
Reading specs from /usr/lib/gcc-lib/i586-pc-linux-gnu/3.0.4/specs
Configured with: ../gcc-3.0.4/configure --prefix=/usr --enable-shared --with-gnu-as --with-gnu-ld
Thread model: single
gcc version 3.0.4
 /usr/lib/gcc-lib/i586-pc-linux-gnu/3.0.4/cpp0 -lang-objc -v -D__GNUC__=3 -D__GNUC_MINOR__=0 -D__GNUC_PATCHLEVEL__=4 -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem=posix -D__NO_INLINE__ -D__STDC_HOSTED__=1 -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ -D__tune_i586__ -D__tune_pentium__ sidebar.m sidebar.mi
GNU CPP version 3.0.4 (cpplib) (i386 Linux/ELF)
ignoring duplicate directory "/home/mikpos/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/mikpos/include
 /usr/lib/gcc-lib/i586-pc-linux-gnu/3.0.4/include/objc
 /usr/local/include
 /usr/lib/gcc-lib/i586-pc-linux-gnu/3.0.4/include
 /usr/i586-pc-linux-gnu/include
 /usr/include
End of search list.
 /usr/lib/gcc-lib/i586-pc-linux-gnu/3.0.4/cc1obj -fpreprocessed sidebar.mi -quiet -dumpbase sidebar.m -ggdb3 -version -o sidebar.s
GNU CPP version 3.0.4 (cpplib) (i386 Linux/ELF)
GNU Objective-C version 3.0.4 (i586-pc-linux-gnu)
        compiled by GNU C version 3.0.4.
sidebar.m:74: Internal compiler error in dwarf2out_finish, at dwarf2out.c:11277
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.

>Fix:
Either compile without -ggdb (-ggdb1, -ggdb2 and -ggdb3 all give ICE, but -g
works), or else remove the protocol DocumentDelegate from the code and remove
the <DocumentDelegate> from the declaration of NSView.
>Release-Note:
>Audit-Trail:
>Unformatted: