llvm-project/clang/test/CodeGen/bounds-checking.c

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// RUN: %clang_cc1 -fsanitize=local-bounds -emit-llvm -triple x86_64-apple-darwin10 %s -o - | FileCheck %s
// RUN: %clang_cc1 -fsanitize=local-bounds -fexperimental-new-pass-manager -emit-llvm -triple x86_64-apple-darwin10 %s -o - | FileCheck %s
// RUN: %clang_cc1 -fsanitize=array-bounds -O -fsanitize-trap=array-bounds -emit-llvm -triple x86_64-apple-darwin10 -DNO_DYNAMIC %s -o - | FileCheck %s
// RUN: %clang_cc1 -fsanitize=array-bounds -O -fsanitize-trap=array-bounds -fexperimental-new-pass-manager -emit-llvm -triple x86_64-apple-darwin10 -DNO_DYNAMIC %s -o - | FileCheck %s
//
// REQUIRES: x86-registered-target
// CHECK-LABEL: @f
double f(int b, int i) {
double a[b];
// CHECK: call {{.*}} @llvm.trap
return a[i];
}
// CHECK-LABEL: @f2
void f2() {
// everything is constant; no trap possible
// CHECK-NOT: call {{.*}} @llvm.trap
int a[2];
a[1] = 42;
#ifndef NO_DYNAMIC
short *b = malloc(64);
b[5] = *a + a[1] + 2;
#endif
}
// CHECK-LABEL: @f3
void f3() {
int a[1];
// CHECK: call {{.*}} @llvm.trap
a[2] = 1;
}