153 lines
4.9 KiB
C
153 lines
4.9 KiB
C
// RUN: %clang_cc1 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_implicit_conversion"
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// RUN: %clang_cc1 -fsanitize=implicit-integer-sign-change -fno-sanitize-recover=implicit-integer-sign-change -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_implicit_conversion" --check-prefixes=CHECK,CHECK-SANITIZE
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// RUN: %clang_cc1 -fsanitize=implicit-integer-sign-change -fsanitize-recover=implicit-integer-sign-change -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_implicit_conversion" --check-prefixes=CHECK,CHECK-SANITIZE
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// RUN: %clang_cc1 -fsanitize=implicit-integer-sign-change -fsanitize-trap=implicit-integer-sign-change -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_implicit_conversion" --check-prefixes=CHECK,CHECK-SANITIZE
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// ========================================================================== //
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// The expected true-negatives.
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// ========================================================================== //
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// Sanitization is explicitly disabled.
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// ========================================================================== //
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// CHECK-LABEL: @blacklist_0
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__attribute__((no_sanitize("undefined"))) unsigned int blacklist_0(signed int src) {
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// We are not in "undefined" group, so that doesn't work.
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// CHECK-SANITIZE: call
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return src;
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}
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// CHECK-LABEL: @blacklist_1
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__attribute__((no_sanitize("integer"))) unsigned int blacklist_1(signed int src) {
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return src;
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}
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// CHECK-LABEL: @blacklist_2
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__attribute__((no_sanitize("implicit-conversion"))) unsigned int blacklist_2(signed int src) {
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return src;
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}
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// CHECK-LABEL: @blacklist_3
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__attribute__((no_sanitize("implicit-integer-sign-change"))) unsigned int blacklist_3(signed int src) {
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return src;
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}
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// Explicit sign-changing conversions.
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// ========================================================================== //
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// CHECK-LABEL: explicit_signed_int_to_unsigned_int
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unsigned int explicit_signed_int_to_unsigned_int(signed int src) {
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return (unsigned int)src;
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}
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// CHECK-LABEL: explicit_unsigned_int_to_signed_int
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signed int explicit_unsigned_int_to_signed_int(unsigned int src) {
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return (signed int)src;
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}
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// Explicit NOP conversions.
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// ========================================================================== //
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// CHECK-LABEL: @explicit_ununsigned_int_to_ununsigned_int
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unsigned int explicit_ununsigned_int_to_ununsigned_int(unsigned int src) {
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return (unsigned int)src;
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}
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// CHECK-LABEL: @explicit_unsigned_int_to_unsigned_int
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signed int explicit_unsigned_int_to_unsigned_int(signed int src) {
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return (signed int)src;
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}
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// conversions to to boolean type are not counted as sign-change.
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// ========================================================================== //
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// CHECK-LABEL: @unsigned_int_to_bool
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_Bool unsigned_int_to_bool(unsigned int src) {
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return src;
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}
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// CHECK-LABEL: @signed_int_to_bool
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_Bool signed_int_to_bool(signed int src) {
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return src;
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}
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// CHECK-LABEL: @explicit_unsigned_int_to_bool
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_Bool explicit_unsigned_int_to_bool(unsigned int src) {
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return (_Bool)src;
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}
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// CHECK-LABEL: @explicit_signed_int_to_bool
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_Bool explicit_signed_int_to_bool(signed int src) {
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return (_Bool)src;
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}
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// Explicit conversions from pointer to an integer.
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// Can not have an implicit conversion from pointer to an integer.
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// Can not have an implicit conversion between two enums.
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// ========================================================================== //
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// CHECK-LABEL: @explicit_voidptr_to_unsigned_int
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unsigned int explicit_voidptr_to_unsigned_int(void *src) {
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return (unsigned int)src;
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}
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// CHECK-LABEL: @explicit_voidptr_to_signed_int
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signed int explicit_voidptr_to_signed_int(void *src) {
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return (signed int)src;
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}
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// Implicit conversions from floating-point.
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// ========================================================================== //
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// CHECK-LABEL: @float_to_unsigned_int
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unsigned int float_to_unsigned_int(float src) {
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return src;
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}
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// CHECK-LABEL: @float_to_signed_int
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signed int float_to_signed_int(float src) {
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return src;
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}
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// CHECK-LABEL: @double_to_unsigned_int
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unsigned int double_to_unsigned_int(double src) {
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return src;
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}
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// CHECK-LABEL: @double_to_signed_int
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signed int double_to_signed_int(double src) {
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return src;
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}
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// Sugar.
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// ========================================================================== //
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typedef unsigned int uint32_t;
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// CHECK-LABEL: @uint32_to_unsigned_int
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unsigned int uint32_to_unsigned_int(uint32_t src) {
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return src;
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}
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// CHECK-LABEL: @unsigned_int_to_uint32
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uint32_t unsigned_int_to_uint32(unsigned int src) {
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return src;
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}
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// CHECK-LABEL: @uint32_to_uint32
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uint32_t uint32_to_uint32(uint32_t src) {
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return src;
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}
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// "Transparent" Enum.
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// ========================================================================== //
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enum a { b = ~2147483647 };
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enum a c();
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void d(int);
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void e();
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void e() {
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enum a f = c();
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d(f);
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}
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