56 lines · c
1// Check that the alloc_size attribute is propagated to the call instruction2// for both direct and indirect calls3// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm %s -o - 2>&1 | FileCheck %s4 5#define NULL ((void *)0)6 7int gi;8 9typedef unsigned long size_t;10 11extern void *my_malloc(int) __attribute__((alloc_size(1)));12extern void *my_calloc(int, int) __attribute__((alloc_size(1, 2)));13 14// CHECK-LABEL: @call_direct15void call_direct(void) {16 my_malloc(50);17 // CHECK: call ptr @my_malloc(i32 noundef 50) [[DIRECT_MALLOC_ATTR:#[0-9]+]]18 my_calloc(1, 16);19 // CHECK: call ptr @my_calloc(i32 noundef 1, i32 noundef 16) [[DIRECT_CALLOC_ATTR:#[0-9]+]]20}21 22extern void *(*malloc_function_pointer)(void *, int)__attribute__((alloc_size(2)));23extern void *(*calloc_function_pointer)(void *, int, int)__attribute__((alloc_size(2, 3)));24 25// CHECK-LABEL: @call_function_pointer26void call_function_pointer(void) {27 malloc_function_pointer(NULL, 100);28 // CHECK: [[MALLOC_FN_PTR:%.+]] = load ptr, ptr @malloc_function_pointer, align 829 // CHECK: call ptr [[MALLOC_FN_PTR]](ptr noundef null, i32 noundef 100) [[INDIRECT_MALLOC_ATTR:#[0-9]+]]30 calloc_function_pointer(NULL, 2, 4);31 // CHECK: [[CALLOC_FN_PTR:%.+]] = load ptr, ptr @calloc_function_pointer, align 832 // CHECK: call ptr [[CALLOC_FN_PTR]](ptr noundef null, i32 noundef 2, i32 noundef 4) [[INDIRECT_CALLOC_ATTR:#[0-9]+]]33}34 35typedef void *(__attribute__((alloc_size(3))) * my_malloc_fn_pointer_type)(void *, void *, int);36typedef void *(__attribute__((alloc_size(3, 4))) * my_calloc_fn_pointer_type)(void *, void *, int, int);37extern my_malloc_fn_pointer_type malloc_function_pointer_with_typedef;38extern my_calloc_fn_pointer_type calloc_function_pointer_with_typedef;39 40// CHECK-LABEL: @call_function_pointer_typedef41void call_function_pointer_typedef(void) {42 malloc_function_pointer_with_typedef(NULL, NULL, 200);43 // CHECK: [[INDIRECT_TYPEDEF_MALLOC_FN_PTR:%.+]] = load ptr, ptr @malloc_function_pointer_with_typedef, align 844 // CHECK: call ptr [[INDIRECT_TYPEDEF_MALLOC_FN_PTR]](ptr noundef null, ptr noundef null, i32 noundef 200) [[INDIRECT_TYPEDEF_MALLOC_ATTR:#[0-9]+]]45 calloc_function_pointer_with_typedef(NULL, NULL, 8, 4);46 // CHECK: [[INDIRECT_TYPEDEF_CALLOC_FN_PTR:%.+]] = load ptr, ptr @calloc_function_pointer_with_typedef, align 847 // CHECK: call ptr [[INDIRECT_TYPEDEF_CALLOC_FN_PTR]](ptr noundef null, ptr noundef null, i32 noundef 8, i32 noundef 4) [[INDIRECT_TYPEDEF_CALLOC_ATTR:#[0-9]+]]48}49 50// CHECK: attributes [[DIRECT_MALLOC_ATTR]] = { allocsize(0) }51// CHECK: attributes [[DIRECT_CALLOC_ATTR]] = { allocsize(0,1) }52// CHECK: attributes [[INDIRECT_MALLOC_ATTR]] = { allocsize(1) }53// CHECK: attributes [[INDIRECT_CALLOC_ATTR]] = { allocsize(1,2) }54// CHECK: attributes [[INDIRECT_TYPEDEF_MALLOC_ATTR]] = { allocsize(2) }55// CHECK: attributes [[INDIRECT_TYPEDEF_CALLOC_ATTR]] = { allocsize(2,3) }56