apply breakpoint at the start of each function

Question

Is there any command in gdb by which one can apply breakpoint at the start of each function in a .C file.

I need this as i have a very big C file which i need to debug and it contains more than 100 functions and i need to find all the functions called during run time.

score 1 · Accepted Answer · edited May 23 '17 at 11:48

1

rbreak file:regex

If you look at this page : http://sourceware.org/gdb/download/onlinedocs/gdb/Set-Breaks.html#Set-Breaks

Look also at the past thread : gdb, set breakpoint on all functions in a file

edited May 23 '17 at 11:48

Community

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answered Jun 29 '12 at 08:12

Jeremy D

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`rbreak file:regex` did not work but I got my answer from the link you shared. Thanks !! – nav_jan Jun 29 '12 at 08:21
yes, but logically a regex containing only . match all any character :) – Jeremy D Jun 29 '12 at 12:47

score 1 · Answer 2 · answered Jun 29 '12 at 08:45

1

I'm not sure if it's a good idea to use the debugger that way for solving your search.

I would add at the beginning of each function a single assignment and one struct at the file start.

struct {
   int foo;
   int bar;
   ...
   int lastFunctionName;
} sFunc;

void foo()
{
  sFunc.foo=1;
  ...
}

void bar()
{
  sFunc.bar=1;
  ...
}

Then you can run your program and it collects the informations for you.

answered Jun 29 '12 at 08:45

jeb

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actually initially I thought of adding `printf` at the start of each function but as I set there are hundred of functions in that particular file so it was really a cumbersome job :) +1 for your suggestion though – nav_jan Jun 29 '12 at 09:42

score 0 · Answer 3 · answered Jun 29 '12 at 08:16

0

The manual states that there is an option rbreak regexp which lets you set a regexp to break on all functions matching that regexp. Given that you are in one file (one module?) maybe all the functions are prefixed in the same way?

answered Jun 29 '12 at 08:16

fnokke

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apply breakpoint at the start of each function

3 Answers3