49 lines · c
1// RUN: %clang_cc1 -triple x86_64-unknown-linux -fsanitize=kcfi -fsanitize-trap=kcfi -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=UNGENERALIZED %s2// RUN: %clang_cc1 -triple x86_64-unknown-linux -fsanitize=kcfi -fsanitize-trap=kcfi -fsanitize-cfi-icall-generalize-pointers -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=GENERALIZED %s3 4// Test that const char* is generalized to const ptr and that char** is5// generalized to ptr6 7// CHECK: define{{.*}} ptr @f({{.*}} !kcfi_type [[TYPE:![0-9]+]]8int** f(const char *a, const char **b) {9 return (int**)0;10}11 12// GENERALIZED: define{{.*}} ptr @f2({{.*}} !kcfi_type [[TYPE]]13// UNGENERALIZED: define{{.*}} ptr @f2({{.*}} !kcfi_type [[TYPE2:![0-9]+]]14int** f2(const int *a, const int **b) {15 return (int**)0;16}17 18// CHECK: define{{.*}} ptr @f3({{.*}} !kcfi_type [[TYPE3:![0-9]+]]19int** f3(char *a, char **b) {20 return (int**)0;21}22 23void g(int** (*fp)(const char *, const char **)) {24 // UNGENERALIZED: call {{.*}} [ "kcfi"(i32 1296635908) ]25 // GENERALIZED: call {{.*}} [ "kcfi"(i32 -49168686) ]26 fp(0, 0);27}28 29union Union {30 char *c;31 long *n;32} __attribute__((transparent_union));33 34// CHECK: define{{.*}} void @uni({{.*}} !kcfi_type [[TYPE4:![0-9]+]]35void uni(void (*fn)(union Union), union Union arg1) {36 // UNGENERALIZED: call {{.*}} [ "kcfi"(i32 -587217045) ]37 // GENERALIZED: call {{.*}} [ "kcfi"(i32 2139530422) ]38 fn(arg1);39}40 41// UNGENERALIZED: [[TYPE]] = !{i32 1296635908}42// GENERALIZED: [[TYPE]] = !{i32 -49168686}43 44// UNGENERALIZED: [[TYPE3]] = !{i32 874141567}45// GENERALIZED: [[TYPE3]] = !{i32 954385378}46 47// UNGENERALIZED: [[TYPE4]] = !{i32 -1619636625}48// GENERALIZED: [[TYPE4]] = !{i32 -125078496}49