Re: MacOS X core dumps - gcc compiler crashes

• Subject: Re: MacOS X core dumps - gcc compiler crashes
• From: Andrew Pinski <email@hidden>
• Date: Mon, 16 Jun 2003 08:35:19 -0400

From: Chris Ridd <email@hidden>

If you try compiling using gcc -v compilerbreaker.c, you will see the

exact

commandlines that the gcc driver is using to execute cc1obj. Presumably

if

you run cc1obj yourself using the identical args, you'll get a nice core
dump...

Nice try. Unfortunately the compiler driver first gets the pre-compiler
to produce a temporary file and then invokes cc1obj to process it. After
the crash it cleans up! So you cannot try again.

It has been suggested that I could replace cc1obj with a wrapper script
that invokes it under gdb and trap the crash like that. I will give it a
try.

I say presumably, because trying to use -fgnu-runtime with an

Objective-C

program as you described does not crash for me.

Try
#include <objc/Object.h>

@interface FooBar: Object
- (void)boo;
@end

int main ()
{
id fooBarInst = [[FooBar alloc] init];

[fooBarInst boo];

return 0;

}

That crashes every time for me with the Apple compiler but not the FSF
version.

Bill Northcott
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