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Add attribute @(no_sanitize_address)

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The purposes of this attribute is to let procedures opt-out of being
instrumented with asan. Typically an allocator that includes 'in-band'
meta-data will be accessing poisoned values (such as tlsf).

Making asan work with these allocators becomes very challenging so
just being to ignore asan within specific allocator procedures
makes it easier to reason and removes the need to temporarily
poison and unpoison allocator data.
This commit is contained in:
Lucas Perlind
2025-05-01 20:42:21 +10:00
parent b04a83ce9f
commit 5c73b4ef58
5 changed files with 11 additions and 2 deletions
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src/checker.hpp
+2 -1
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@@ -139,6 +139,7 @@ struct AttributeContext {
bool entry_point_only : 1;
bool instrumentation_enter : 1;
bool instrumentation_exit : 1;
bool no_sanitize_address : 1;
bool rodata : 1;
bool ignore_duplicates : 1;
u32 optimization_mode; // ProcedureOptimizationMode
@@ -629,4 +630,4 @@ gb_internal void add_untyped_expressions(CheckerInfo *cinfo, UntypedExprInfoMap
gb_internal GenTypesData *ensure_polymorphic_record_entity_has_gen_types(CheckerContext *ctx, Type *original_type);
gb_internal void init_map_internal_types(Type *type);
gb_internal void init_map_internal_types(Type *type);