Hi, I am new to working with the AT&T AST tools directly (but not ksh). So I am new to this forum. I am focused currently on RHEL Linux as a platform. I recently started an assignment to bring in some existing C++ code as a custom ksh built-in command. I hit a core dump related to plugin_version() at ksh build 2010-06-21 which from looking around, might have been a problematic version as the plugin_version() requirements were a bit new from some of the notes. Using ksh version 2012-08-01, plugin_version() is no longer an issue. Also I addressed several things by using 'extern "C" ' as might be expected like the b_<command name>, etc.
The new issue I have debugged and the main issue I am writing about is with regard to C++ support and the cstdio header. After debugging another core dump, I noticed the stack trace was very different when cstdio is included vs stdio.h. When a code module uses only stdio.h (the code is focused more on C) I see there is some translation of the IO functions to "__ast_" versions. I am sure this is to properly control I/O within the shell command environment. But when I use cstdio no such translations happen (I assume the issue is related to the namespace "std"). It was easy to verify this with nm as this is what I would see when things worked correctly for example: U _ast_fprintf U _ast_printf So my main question is, does the AST ksh built-in really fully support C++? I noticed many of the notes on doing built-ins reference the C++ compiler which seems to work fine. But I assume there are some limitations with broad C++ implementations (especially with regard to using cstdio). If the simple answer is that any C++ integration should be somewhat rudimentary, then perhaps you could list more details about this in the docs which walk through building built-in commands. Or at least touch on any limitations to cstdio capabilities. I was unable to find specifics on this looking around the Web or within some of the archive notes. Thanks in advance for your kind assistance. Doug.. _______________________________________________ ast-users mailing list ast-users@lists.research.att.com http://lists.research.att.com/mailman/listinfo/ast-users
