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Re: New bootstrap failure in libjava/gnu/gcj/runtime/natStackTrace.cc

From: Andrew Haley <aph at redhat dot com>
To: "Kaveh R. Ghazi" <ghazi at caip dot rutgers dot edu>
Cc: graham dot stott at btinternet dot com, gcc-bugs at gcc dot gnu dot org,java at gcc dot gnu dot org
Date: Thu, 5 Dec 2002 10:43:59 +0000 (GMT)
Subject: Re: New bootstrap failure in libjava/gnu/gcj/runtime/natStackTrace.cc
References: <200212041918.OAA08941@caip.rutgers.edu><15854.24848.237065.518868@cuddles.cambridge.redhat.com><3DEE7202.6000209@btinternet.com><200212050359.WAA21584@caip.rutgers.edu>

Kaveh R. Ghazi writes:
 >  > From: Graham Stott <graham.stott@btinternet.com>
 >  > 
 >  > Hi Andrew,
 >  > This doesn't look like it'll work to me because p won't be initialised
 >  > unless HAVE_BACKSPACE is defined and we'll end up dereferencing an
 >  > unitialised pointer on line 74.

We won't, because len will be zero.

 > Indeed.  When I add the patch and recompile, I get:
 > 
 >  > natStackTrace.cc:51: warning: `void**p' might be used uninitialized in this function

It won't, but the compiler doesn't know that.  I'll do something to
fix the warning.

Andrew.

References:
- New bootstrap failure in libjava/gnu/gcj/runtime/natStackTrace.cc
  - From: Kaveh R. Ghazi
- New bootstrap failure in libjava/gnu/gcj/runtime/natStackTrace.cc
  - From: Andrew Haley
- Re: New bootstrap failure in libjava/gnu/gcj/runtime/natStackTrace.cc
  - From: Graham Stott
- Re: New bootstrap failure in libjava/gnu/gcj/runtime/natStackTrace.cc
  - From: Kaveh R. Ghazi

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