How to get a stack trace from FastMM

Question

I\'ve noticed in the following post that you can get a stack trace out of FastMM to show what appears to be where an object was allocated:

How to track down tricky m

Answer 1

The internal Delphi version of FastMM doesn't support stack traces.

If you want to log the memory leak stack traces, you have to:

• download the full version of the FastMM library

• include it as the first unit in your project:

  program YourProject;
  
  uses
    FastMM4, // <--
    SysUtils,
    Forms,
    ...
  

• enable the FullDebugMode option in FastMM4Options.inc

• set Map file to Detailed in the linking project options (the FastMM_FullDebugMode.dll processes the .map file)

• add the FastMM_FullDebugMode.dll in your binary (or Windows System32) directory

Answer 2

You can also see this and this for more detailed description, than ulrichb's reply.

And don't forget to enable "Use Debug DCUs" option ;)

Answer 3

In addition, Francois Gaillard presented on CodeRage II a session called Fighting Memory Leaks for Dummies and deals specifically with FastMM. It is listed under the CodeRage II replays at thursday, November 29, 2007, 9.45am - 10:45am.

http://edn.embarcadero.com/article/37498

Regards, Erwin

Answer 4

You may also want to check out Jeremy North's FastMM4 Option setting program. It's just a bit easier than editing the inc FastMM4Options.inc file directly. Here's the link:

FastMM4 Options Interface Blog Post