mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-12-15 21:44:50 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 12

bpo-35214: Initial clang MemorySanitizer support (GH-10479)

Browse source 
Adds configure flags for msan and ubsan builds to make it easier to enable.
These also encode the detail that address sanitizer and memory sanitizer
should disable pymalloc.

Define MEMORY_SANITIZER when appropriate at build time and adds workarounds
to existing code to mark things as initialized where the sanitizer is otherwise unable to
determine that.  This lets our build succeed under the memory sanitizer.  not all tests
pass without sanitizer failures yet but we're in pretty good shape after this.
This commit is contained in:
Gregory P. Smith 2018-11-12 12:07:14 -08:00 • committed by GitHub
parent a9655b7f71
commit 1584a00815
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
9 changed files with 115 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Modules/faulthandler.c
View file

@ -1370,7 +1370,7 @@ void _PyFaulthandler_Fini(void)
#ifdef HAVE_SIGALTSTACK
if (stack.ss_sp != NULL) {
/* Fetch the current alt stack */
stack_t current_stack;
stack_t current_stack = {};
if (sigaltstack(NULL, &current_stack) == 0) {
if (current_stack.ss_sp == stack.ss_sp) {
/* The current alt stack is the one that we installed.