823363 - DFD: a tool for detecting double-frees

Status: RESOLVED WONTFIX

(Core :: General, defect)

Description

[Nicholas Nethercote [inactive]]

Attachment: DMD.cpp

DFD will complain if you:

- free()/realloc() a heap block that has already been freed, or

- free()/realloc() a non-heap-block pointer.

It's currently implemented as a hacked-up version of DMD.  Replace memory/replace/dmd/DMD.cpp with the copy of DMD.cpp in the attachment.  (I did it this way because a patch against DMD.cpp would bit-rot very quickly.)

Build and run it just like DMD (see https://wiki.mozilla.org/Performance/MemShrink/DMD for instructions).  Yes, all the names like --enable-dmd and $DMD are unchanged.  It runs significantly slower than a normal build, but should be moderately usable.

Output goes to /tmp/out.dfd or /data/local/tmp/out.dfd.

Comment 1

[Nicholas Nethercote [inactive]]

This isn't going anywhere.