derek.holloway
7502bf64a4
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49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
// RUN: %clang_cc1 -triple x86_64-unknown-linux -fsanitize=kcfi -fsanitize-trap=kcfi -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=UNGENERALIZED %s
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// 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 %s
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// Test that const char* is generalized to const ptr and that char** is
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// generalized to ptr
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// CHECK: define{{.*}} ptr @f({{.*}} !kcfi_type [[TYPE:![0-9]+]]
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int** f(const char *a, const char **b) {
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return (int**)0;
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}
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// GENERALIZED: define{{.*}} ptr @f2({{.*}} !kcfi_type [[TYPE]]
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// UNGENERALIZED: define{{.*}} ptr @f2({{.*}} !kcfi_type [[TYPE2:![0-9]+]]
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int** f2(const int *a, const int **b) {
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return (int**)0;
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}
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// CHECK: define{{.*}} ptr @f3({{.*}} !kcfi_type [[TYPE3:![0-9]+]]
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int** f3(char *a, char **b) {
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return (int**)0;
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}
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void g(int** (*fp)(const char *, const char **)) {
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// UNGENERALIZED: call {{.*}} [ "kcfi"(i32 1296635908) ]
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// GENERALIZED: call {{.*}} [ "kcfi"(i32 -49168686) ]
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fp(0, 0);
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}
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union Union {
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char *c;
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long *n;
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} __attribute__((transparent_union));
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// CHECK: define{{.*}} void @uni({{.*}} !kcfi_type [[TYPE4:![0-9]+]]
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void uni(void (*fn)(union Union), union Union arg1) {
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// UNGENERALIZED: call {{.*}} [ "kcfi"(i32 -587217045) ]
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// GENERALIZED: call {{.*}} [ "kcfi"(i32 2139530422) ]
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fn(arg1);
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}
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// UNGENERALIZED: [[TYPE]] = !{i32 1296635908}
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// GENERALIZED: [[TYPE]] = !{i32 -49168686}
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// UNGENERALIZED: [[TYPE3]] = !{i32 874141567}
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// GENERALIZED: [[TYPE3]] = !{i32 954385378}
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// UNGENERALIZED: [[TYPE4]] = !{i32 -1619636625}
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// GENERALIZED: [[TYPE4]] = !{i32 -125078496}
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