Re: c++/4500

Re: c++/4500

[Reichelt]

The following reply was made to PR c++/4500; it has been noted by GNATS.

From: Reichelt <reichelt@igpm.rwth-aachen.de>
To: Ulrich.Hagen@Siemens.com, gcc-gnats@gcc.gnu.org, gcc-bugs@gcc.gnu.org
Cc:  
Subject: Re: c++/4500
Date: Tue, 9 Oct 2001 11:59:02 +0200

 Hi,
 
 the problem seems to be the interaction between optimization and dwarf2
 output. I distilled the following testcase from the PR:
 
 int e();
 
 struct A
 {
   A (int);
   ~A ();
 };
 
 struct B
 {
   void f (int);
 };
 
 template <class T> struct C
 {
   void g () { A a(0); h(); }
   void h () { if (!(e() && e()>0)) { B b; b.f(e()); } }
 };
 
 template struct C<void>;
 
 It crashes gcc 3.0.2 20010903 (prerelease) on mips-sgi-irix6.5
 using "g++ -O2 -g -c <filename>" and gcc 3.0 on i686-pc-linux-gnu
 using "g++ -O2 -gdwarf-2 -c <filename>". I cannot test the original
 system "alphaev67-unknown-linux-gnu" however.
 
 Remark: With i686-pc-linux-gnu you can change the conditional
 expression in the if-statement to "e()" and still get the crash.
 
 Greetings,
 Volker Reichelt
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view&pr=4500&database=gcc