_pre_mem_asciiz handlers in both tools: don't segfault if passed an
obviously invalid address.  Fixes #255009.  Investigation & initial
patch by Philippe Waroquiers (philippe.waroquiers@skynet.be)



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11533 a5019735-40e9-0310-863c-91ae7b9d1cf9
2 files changed