Xref: news2.mv.net comp.os.msdos.djgpp:959
From: bradtech AT i-link DOT net (Brad Burgan)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: v2 vs v1 C++ interpretation
Date: Tue, 06 Feb 1996 15:09:32 GMT
Organization: I-Link Inc
Lines: 52
Message-ID: <4f7qvi$10ca@news.i-link.net>
References: <4eads7$4e6 AT trog DOT dra DOT hmg DOT gb>
NNTP-Posting-Host: houston-1-1.i-link.net
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

itmiller AT taz DOT dra DOT hmg DOT gb () wrote:


>Does anyone know why the C++ function...
>
>void term();
>int curr_tok = 0;
>
>void term()
>{
>	switch (curr_tok)
>	{
>	case 1:
>		double d = 3.0;
>		break;
>	default:
>		return;
>	}
>}
>
>..should fail to compile under djgpp v2 beta 4 with error messages...
>
>gcc -c test.cc
>test.cc: In function `void term()':
>test.cc:11: jump to case label
>test.cc:9:   crosses initialization of `double d'
>make.exe: *** [test.o] Error 1
>
>..but compile fine if  I do not initialise d, and compile fine under
>djgpp 1.12m4 without alteration?
>

Someone correct me if I'm wrong, but...

gcc 2.7 uses some newer scoping rules that have required me changing
my programs.  For example...

for (int i = 0; i < 3; i++)
  {
  foo();
  }
for (i = 3; i < 6; i++)
  {
  bar();
  }

this works with all other compilers I've used, including
v112m4, but not with gcc272.  It says the new ansi
scoping doesn't allow this anymore.  That's probably
why it doesn't want you doing that.