Using LD_PRELOAD wrappers to identify problem use of shared library functions

[John Reiser]

On 03/10/2011 08:25 AM, William Cohen wrote:
> git repo at:
> 
> http://fedorapeople.org/gitweb?p=wcohen/public_git/memstomp;a=summary

Actually: git clone git://fedorapeople.org/home/fedora/wcohen/public_git/memstomp

The implementation has some properties:
1.  Not async signal safe [malloc, fprintf], as noted previously by Daniel Berrange.
2.  Not thread safe: unguarded top-level static variables in backtrace-symbols.c.
3.  Essentially bundles a private copy of libbfd.
4.  Needs work for a process tree that uses a mixture of 32-bit and 64-bit programs.
5.  Does not catch violations in compile-time inlined expansions.
6.  SIGSEGVs for violations from just-in-time compiled code: uninit local
    variables in backtrace_symbols() not set by calls to dl_iterate_phdr.

--