Re: Exceptions handling in pure C

Newsgroups	comp.lang.c
Date	2012-12-08 10:34 -0800
References	<k9s3j1$c1s$1@node1.news.atman.pl>
Message-ID	<5dcfb4ba-c6a1-49fe-8d7a-ebea4e35efb6@googlegroups.com> (permalink)
Subject	Re: Exceptions handling in pure C
From	Malcolm McLean <malcolm.mclean5@btinternet.com>

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On Friday, December 7, 2012 6:50:09 AM UTC, Borneq wrote:
> How can translate C++ to C code with exceptions handling? Unfortunately  
> Stroustrup translator cfron has only source and not compiled, llvm command 
> to translate C++ => C not works.
>
You mean hand translation?

Translate a throw to a goto error_exit.
In the error_exit portion of the code, free up everything you allocated 
in the function (so be sure not to have dangling uninitialised pointers).#
Then set a global "exception" flag.
After every call to a function which can throw, add If(expeption) goto error_exit;

To implement catch, check the exeception flag, then clear it. You'll have to
have jumps into catch.

It's not nice. But it will work without too much violence to your C code.

You have to be more sophisticated with automatic translation, because you 
have to handle every legal C++ construct.

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Exceptions handling in pure C "Borneq" <borneq@antyspam.hidden.pl> - 2012-12-07 07:50 +0100
  Re: Exceptions handling in pure C Ian Collins <ian-news@hotmail.com> - 2012-12-07 20:42 +1300
    Re: Exceptions handling in pure C "Borneq" <borneq@antyspam.hidden.pl> - 2012-12-07 09:23 +0100
      Re: Exceptions handling in pure C Ian Collins <ian-news@hotmail.com> - 2012-12-07 21:41 +1300
        Re: Exceptions handling in pure C BGB <cr88192@hotmail.com> - 2012-12-07 03:10 -0600
          Re: Exceptions handling in pure C Ian Collins <ian-news@hotmail.com> - 2012-12-08 07:44 +1300
            Re: Exceptions handling in pure C BGB <cr88192@hotmail.com> - 2012-12-07 17:26 -0600
        Re: Exceptions handling in pure C "Borneq" <borneq@antyspam.hidden.pl> - 2012-12-08 11:08 +0100
          Re: Exceptions handling in pure C Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-12-08 19:02 +0000
            Re: Exceptions handling in pure C Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-12-08 19:22 +0000
  Re: Exceptions handling in pure C James Kuyper <jameskuyper@verizon.net> - 2012-12-07 08:06 -0500
    Re: Exceptions handling in pure C "Borneq" <borneq@antyspam.hidden.pl> - 2012-12-07 16:40 +0100
      Re: Exceptions handling in pure C James Kuyper <jameskuyper@verizon.net> - 2012-12-07 11:24 -0500
        Re: Exceptions handling in C + assembler "Borneq" <borneq@antyspam.hidden.pl> - 2012-12-07 18:02 +0100
          Re: Exceptions handling in C + assembler James Kuyper <jameskuyper@verizon.net> - 2012-12-07 12:25 -0500
          Re: Exceptions handling in C + assembler "christian.bau" <christian.bau@cbau.wanadoo.co.uk> - 2012-12-07 09:29 -0800
            Re: Exceptions handling in C + assembler "BartC" <bc@freeuk.com> - 2012-12-08 12:46 +0000
              Re: Exceptions handling in C + assembler James Kuyper <jameskuyper@verizon.net> - 2012-12-08 09:35 -0500
              Re: Exceptions handling in C + assembler Robert Wessel <robertwessel2@yahoo.com> - 2012-12-08 12:08 -0600
                Re: Exceptions handling in C + assembler BGB <cr88192@hotmail.com> - 2012-12-08 15:19 -0600
              Re: Exceptions handling in C + assembler Jonathan Leffler <jleffler@earthlink.net> - 2012-12-16 22:37 -0800
      Re: Exceptions handling in pure C Rosario1903 <Rosario@invalid.invalid> - 2012-12-07 21:24 +0100
  Re: Exceptions handling in pure C Keith Thompson <kst-u@mib.org> - 2012-12-07 11:07 -0800
    Re: Exceptions handling in C + assembler "Borneq" <borneq@antyspam.hidden.pl> - 2012-12-07 20:35 +0100
      Re: Exceptions handling in C + assembler James Kuyper <jameskuyper@verizon.net> - 2012-12-07 15:15 -0500
        Re: Exceptions handling in C + assembler "Borneq" <borneq@antyspam.hidden.pl> - 2012-12-08 16:49 +0100
          Re: Exceptions handling in C + assembler James Kuyper <jameskuyper@verizon.net> - 2012-12-08 11:04 -0500
          Re: Exceptions handling in C + assembler Thomas Richter <thor@math.tu-berlin.de> - 2012-12-09 15:05 +0100
  Re: Exceptions handling in pure C Malcolm McLean <malcolm.mclean5@btinternet.com> - 2012-12-08 10:34 -0800

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