44 lines · c
1// REQUIRES: x86_64-target-arch2// RUN: %clang -Wno-constant-conversion -Wno-array-bounds -Wno-division-by-zero -Wno-shift-negative-value -Wno-shift-count-negative -Wno-int-to-pointer-cast -O0 -fsanitize=alignment,array-bounds,bool,float-cast-overflow,implicit-integer-sign-change,implicit-signed-integer-truncation,implicit-unsigned-integer-truncation,integer-divide-by-zero,nonnull-attribute,null,nullability-arg,nullability-assign,nullability-return,pointer-overflow,returns-nonnull-attribute,shift-base,shift-exponent,signed-integer-overflow,unreachable,unsigned-integer-overflow,unsigned-shift-base,vla-bound %s -o %t1 && %run %t1 2>&1 | FileCheck %s3 4#include <stdint.h>5#include <stdio.h>6 7// In this test there is an expectation of assignment of _BitInt not producing any output.8uint32_t nullability_arg(_BitInt(37) *_Nonnull x)9 __attribute__((no_sanitize("address")))10 __attribute__((no_sanitize("memory"))) {11 _BitInt(37) y = *(_BitInt(37) *)&x;12 return (y > 0) ? y : 0;13}14 15// In this test there is an expectation of ubsan not triggeting on returning random address which is inside address space of the process.16_BitInt(37) nonnull_attribute(__attribute__((nonnull)) _BitInt(37) * x)17 __attribute__((no_sanitize("address")))18 __attribute__((no_sanitize("memory"))) {19 return *(_BitInt(37) *)&x;20}21 22// In this test there is an expectation of assignment of uint32_t from "invalid" _BitInt is not producing any output.23uint32_t nullability_assign(_BitInt(7) * x)24 __attribute__((no_sanitize("address")))25 __attribute__((no_sanitize("memory"))) {26 _BitInt(7) *_Nonnull y = x;27 int32_t r = *(_BitInt(7) *)&y;28 return (r > 0) ? r : 0;29}30 31// In those examples the file is expected to compile & run with no diagnostics32// CHECK-NOT: runtime error:33 34int main(int argc, char **argv) {35 // clang-format off36 uint64_t result =37 1ULL +38 nullability_arg((_BitInt(37) *)argc) +39 ((uint64_t)nonnull_attribute((_BitInt(37) *)argc) & 0xFFFFFFFF) +40 nullability_assign((_BitInt(7) *)argc);41 // clang-format on42 printf("%u\n", (uint32_t)(result & 0xFFFFFFFF));43}44