DragonFly On-Line Manual Pages

DI(3)                 DragonFly Library Functions Manual                 DI(3)

NAME
       DI - verify assertions in C and C++ code using gdb(1)

SYNOPSIS
       #include <DI.h>

       DI(exprn)

       DIG(exprn,guard)

       DIH(exprn,handler)

       DIP(exprn,param)

       DIGH(exprn,guard,handler)

       DIHP(exprn,handler,param)

       DIGHP(exprn,guard,handler,param)

       DS(exprn)

DESCRIPTION
       The DI(exprn) checks that the exprn is true in the same way as
       assert(3).  It is however implemented by generating debugger commands
       from the source code and so only works if you run the command under a
       debugger after source the command file generated by nana(1).

       exprn - the expression to be checked.

       guard - the expression is normally only checked if the guard is true.

       handler - a macro which generates the code that handles the error
       condition.

       param - a parameter which can be passed off to the handler. This can be
       used for identifying the assertion failure in a space-efficent manner,
       e.g. by copying it into a register before aborting.

       See nana.info for details on configuring the behaviour on error
       detection, etc. You also need to include the nana library by using
       -lnana if you use the default setup.

       In addition to the DI, DIG, etc DI.h also provides DN, DNG, etc which
       are used to check that an expression is never true.

SEE ALSO
       nana-clg(1), nana(1), nana(3), I(3), L(3), DL(3), Q(3) and nana.info.

       The nana.info file is the primary documentation for this library.

AUTHOR
       Phil Maker <pjm@gnu.org>

                                                                         DI(3)