Debug Malloc (Dmalloc) Library Release Notes

Overview

General feature release with some bug repairs as well.

New Functionality

• Added autoconfiguration of the presence of a C++ compiler so the Makefile will attempt to build and install libdmallocxx.a if it can.

• Added initial mprotect autoconfiguration and stub functions to the library. They don't do anything right now however it is able time dmalloc had this functionality.

Dmalloc Utility Changes

None.

Changes to the settings.dist File

• Added PROTECT_BLOCKS setting which defaults to 1 (on). Set it 0 if you don't want dmalloc to be using mprotect to restrict accesses to memory blocks. This is a newer part of the library and still may have bugs. Protection will only be on if the auto-configuration scripts find the mprotect function and the PROT_NONE, PROT_READ, and PROT_WRITE defines.

Programming Notes

• The dmalloc_examine function now returns DMALLOC_[NO]ERROR not [NO]ERROR which was not exported.

• The dmalloc_verify function now returns DMALLOC_[NO]ERROR instead of DMALLOC_VERIFY_[NO]ERROR.

• Moved to 'make cxx' and 'make installcxx' for building and installing the C++ version of the library.

Environmental Variable Changes

None.

Bugs Fixed

• Fixed a bug found by Mcvey where the 1st dblock allocation in a block would not have been found in non-freed memory lists. Yuck.

• Fixed some portability problems with the environmental variable initialization values.