Merge pull request #5102 from Lperlind/attribute-no-sanitize-address

Add attribute @(no_sanitize_address)

src/check_decl.cpp

@@ -1229,6 +1229,7 @@ gb_internal void check_proc_decl(CheckerContext *ctx, Entity *e, DeclInfo *d) {
 
 	e->Procedure.has_instrumentation = has_instrumentation;
 
+	e->Procedure.no_sanitize_address = ac.no_sanitize_address;
 
 	e->deprecated_message = ac.deprecated_message;
 	e->warning_message = ac.warning_message;

src/checker.cpp

@@ -3711,6 +3711,12 @@ gb_internal DECL_ATTRIBUTE_PROC(proc_decl_attribute) {
 		}
 		ac->instrumentation_exit = true;
 		return true;
+	} else if (name == "no_sanitize_address") {
+		if (value != nullptr) {
+			error(value, "'%.*s' expects no parameter", LIT(name));
+		}
+		ac->no_sanitize_address = true;
+		return true;
 	}
 	return false;
 }

src/checker.hpp

@@ -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

src/entity.cpp

@@ -258,6 +258,7 @@ struct Entity {
 			bool    is_memcpy_like             : 1;
 			bool    uses_branch_location       : 1;
 			bool    is_anonymous               : 1;
+			bool    no_sanitize_address        : 1;
 		} Procedure;
 		struct {
 			Array<Entity *> entities;

src/llvm_backend_proc.cpp

@@ -333,7 +333,7 @@ gb_internal lbProcedure *lb_create_procedure(lbModule *m, Entity *entity, bool i
 	}
 
 	if (p->body && entity->pkg && ((entity->pkg->kind == Package_Normal) || (entity->pkg->kind == Package_Init))) {
-		if (build_context.sanitizer_flags & SanitizerFlag_Address) {
+		if (build_context.sanitizer_flags & SanitizerFlag_Address && !entity->Procedure.no_sanitize_address) {
 			lb_add_attribute_to_proc(m, p->value, "sanitize_address");
 		}
 		if (build_context.sanitizer_flags & SanitizerFlag_Memory) {