diff options
Diffstat (limited to 'src/llvm_backend_general.cpp')
| -rw-r--r-- | src/llvm_backend_general.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/llvm_backend_general.cpp b/src/llvm_backend_general.cpp index 421720c4c..dad5d4dd5 100644 --- a/src/llvm_backend_general.cpp +++ b/src/llvm_backend_general.cpp @@ -3070,6 +3070,13 @@ gb_internal lbAddr lb_add_local(lbProcedure *p, Type *type, Entity *e, bool zero if (e != nullptr) { lb_add_entity(p->module, e, val); lb_add_debug_local_variable(p, ptr, type, e->token); + + // NOTE(lucas): In LLVM 20 and below we do not have the option to have asan cleanup poisoned stack + // locals ourselves. So we need to manually track and unpoison these locals on proc return. + // LLVM 21 adds the 'use-after-scope' asan option which does this for us. + if (build_context.sanitizer_flags & SanitizerFlag_Address && !p->entity->Procedure.no_sanitize_address) { + array_add(&p->asan_stack_locals, val); + } } if (zero_init) { |