Raise breakpoint with code

[dodgebros]

I need to have a break point created when certain conditions are met in my code.  How can I do this?

TD

[jamie]

Raise Exception.Create('My Text');

You can also place a break point on the source line when the condition holds true for you and it will stop there ..

[Martin_fr]

Code: Pascal  [Select][+][-]

1. if foo = bar then
2. asm
3.   int3
4. end

Depending on asm-mode, it may be "int 3".

Also I am not sure, how the different debugger back-ends deal with it.
IIRC gdb-based should handle it, FpDebug handles this in trunk.

Code: Pascal  [Select][+][-]

1. if foo=bar then
2.   sleep(1); // normal breakpoint here

Or any no-op operation. In asm: nop

Using a breakpoint on a normal code line, you can specify a condition. However string comparison does not work in gdb based. It works with FpDebug (at leat in trunk).

Further more, you can influence breakpoints depending on other code being executed.
https://wiki.lazarus.freepascal.org/IDE_Window:_Breakpoints#Breakpoint_properties "enable/disable group"
A none breaking breakpoint in some code, can enable or disable another breakpoint.
That can for example be used in calling code, so breakpoint are only active when code is called from certain locations.
(This should work with all backends)

[Martin_fr]

You may also want to look at "assert"
https://www.freepascal.org/docs-html/rtl/system/assert.html

[dodgebros]

I get "Identifier not found "int3"

My code:

Code: Pascal  [Select][+][-]

1. if C = 35 then
2.   begin
3.     int3;
4.   end;
5.  

Is there a unit I need to add to the uses section in order to use the "int3"?
TD

[440bx]

I get "Identifier not found "int3"

My code:

Code: Pascal  [Select][+][-]

1. if C = 35 then
2.   begin
3.     int3;
4.   end;
5.  

Is there a unit I need to add to the uses section in order to use the "int3"?
TD

Put a space between "int" and "3" and it will work (Martin_fr mentioned it.)

HTH.

[Martin_fr]

I get "Identifier not found "int3"

My code:

Code: Pascal  [Select][+][-]

1. if C = 35 then
2.   begin
3.     int3;
4.   end;
5.  

Is there a unit I need to add to the uses section in order to use the "int3"?
TD

You do not have an "asm" block.

[Martin_fr]

I get "Identifier not found "int3"

My code:

Code: Pascal  [Select][+][-]

1. if C = 35 then
2.   begin
3.     int3;
4.   end;
5.  

Is there a unit I need to add to the uses section in order to use the "int3"?
TD

You do not have an "asm" block.

And then maybe also, above the block, or at the unit start

Code: Pascal  [Select][+][-]

1. {$asmmode intel}

[dodgebros]

This fixed it:

Code: Pascal  [Select][+][-]

1. implementation
2.  
3. uses dm;
4.  
5. {$R *.lfm}
6.  
7. {$asmmode intel}
8.  
9. ..........
10.  
11. if C = 35 then
12.   asm
13.     int 3;
14.   end;            
15.  

Thanks everyone for the great help!
TD 

[440bx]

You do not have an "asm" block.

Good catch.  I missed that.