From: Daniel Jacobowitz <drow@false.org>
To: Arijit Das <arijit79@gmail.com>
Cc: Bob Rossi <bob_rossi@cox.net>, gdb@sourceware.org
Subject: Re: How to portably print out Env of a Process
Date: Wed, 12 Jul 2006 16:56:00 -0000 [thread overview]
Message-ID: <20060712165630.GC22834@nevyn.them.org> (raw)
In-Reply-To: <5f3d30900605232143w18744017s439a8762616b53e8@mail.gmail.com>
On Wed, May 24, 2006 at 10:13:16AM +0530, Arijit Das wrote:
> Thanks...
>
> (gdb) p ((char * (*)()) getenv) ("HOME")
>
> seems to be working fine so far. But couldn't make sense of the cast
> logically. As you said, ideally, it should have been something like
>
> (gdb) p ((char * (*)(const char *)) getenv) ("HOME")
>
> which doesn't work!
I haven't got the time it's going to take to fix this right now, but I
do see what's wrong. It's a combination of two things. One is
the "const"; push_type and follow_types don't have any scoping in them,
so a call to follow_types always eats everything on the stack. Which
eats the bit making this a pointer to a function instead of a function.
The other is that the func_mod rule in c-exp.y just discards the
arguments. We never look at them.
This is all somewhat lame, but will be tricky to improve without
breaking something that already works.
Thanks for reporting this!
--
Daniel Jacobowitz
CodeSourcery
next prev parent reply other threads:[~2006-07-12 16:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-23 13:05 Arijit Das
2006-05-23 18:32 ` Bob Rossi
2006-05-23 22:07 ` Daniel Jacobowitz
2006-05-24 9:16 ` Arijit Das
2006-07-12 16:56 ` Daniel Jacobowitz [this message]
2006-06-17 20:00 ` Mark Kettenis
2006-07-12 16:39 ` Daniel Jacobowitz
2006-07-16 16:48 ` Mark Kettenis
2006-07-17 0:57 ` Daniel Jacobowitz
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