[fpc-devel] Conditional Breakpoints using FPC and GDB

Jonas Maebe jonas.maebe at elis.ugent.be
Fri Aug 13 11:39:20 CEST 2010

On 13 Aug 2010, at 11:14, Graeme Geldenhuys wrote:

> Does anybody know if there is a way to support Conditional
> Breakpoints in FPC + GDB with string types?

It can be solved without changing anything to either FPC or GDB, by  
basically writing extensions for GDB in Pascal. Create a unit with a  
bunch of cdecl helpers to deal with types that GDB does not know  
about, such as ansistrings (comparison, assignment, ...). Then in the  
Pascal IDE,
a) when compiling a debug version, include this unit in the main  
program (if it gets standardised, we can include it with FPC and  
automatically add it when generating debug information)
b) when one of those types is used in an expression, call the  
appropriate helper via GDB (you can include function calls in  


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