How to do a specific action when ANY Unknown Breakpoint gets Hit in GDB

Question

I have read the following SO question: Do specific action when certain breakpoint hits in gdb

Here, we use 'command' to decide what to do when the SPECIFIED Breakboint Gets Hit.

My Question is:

Suppose I put Breakpoints on ALL the Functions matching a given pattern:

gdb$rbreak func_

=> 100 Breakpoints (say)

When I execute this Code, I want to do the SAME Action - on hitting Each of these functions.

Hence, I cannot define something like:

command break_point_number

// since I don't know how many breakpoints will be there

Can somebody please suggest me:

How can I do a specific action-set when ANY Breakpoint gets Hit in GDB?

Thanks.

Tom Tromey · Accepted Answer · 2013-08-16 02:33:59Z

3

With a new enough version of gdb you can use a range:

(gdb) rbreak whatever
... gdb creates breakpoints N, N+1, ..., M
(gdb) commands N-M
> stuff
> end

I forget exactly when this feature went in.

With an older version of gdb, I'm not sure it can easily be done.

It can be done with difficulty: use set logging to write output to a file, then "info break", then "shell" to run scripts to edit the file into gdb commands, then "source". This is very painful.

answered Aug 16, 2013 at 2:33

Tom Tromey

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