The tbreak command sets a temporary breakpoint.


tbreak [ location ] [ if condition ]
where location is:
{ [module.]function
| [module:]line
  1. module is the name of a source file, without extension.
  2. function is a function name.
  3. line is a source code line.
  4. condition is an expression evaluated dynamically.


The tbreak command sets a breakpoint for one stop only.

The breakpoint is set in the same way as with the break command, but the breakpoint is automatically deleted after the first time your program stops there.

If a condition is specified, the program stops at the breakpoint only if the condition evaluates to true.

If you do not specify any location (function or line number), the breakpoint is created for the current line. For example, if you write "tbreak if var = 1", the debugger adds a conditional breakpoint for the current line, and the program will only stop if the variable is equal to 1 when reaching the current line again.


(fgldb) tbreak 12 
Breakpoint 2 at 0x00000000: file custmain.4gl, line 12.