79 lines · c
1// REQUIRES: x86-registered-target2// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -Wno-constant-conversion -Wno-array-bounds -Wno-division-by-zero -Wno-shift-negative-value -Wno-shift-count-negative -Wno-int-to-pointer-cast -fsanitize=array-bounds,enum,float-cast-overflow,integer-divide-by-zero,implicit-unsigned-integer-truncation,implicit-signed-integer-truncation,implicit-integer-sign-change,unsigned-integer-overflow,signed-integer-overflow,shift-base,shift-exponent -O0 -emit-llvm -o - %s | FileCheck %s3 4// The runtime test checking the _BitInt ubsan feature is located in compiler-rt/test/ubsan/TestCases/Integer/bit-int.c5 6typedef unsigned int uint32_t;7uint32_t float_divide_by_zero() {8 float f = 1.0f / 0.0f;9 // CHECK: constant { i16, i16, [8 x i8] } { i16 1, i16 32, [8 x i8] c"'float'\00" }10 _BitInt(37) r = (_BitInt(37))f;11 // CHECK: constant { i16, i16, [20 x i8] } { i16 2, i16 13, [20 x i8] c"'_BitInt(37)'\00%\00\00\00\00\00" }12 return r;13}14 15uint32_t integer_divide_by_zero() __attribute__((no_sanitize("memory"))) {16 _BitInt(37) x = 1 / 0;17 // CHECK: constant { i16, i16, [32 x i8] } { i16 0, i16 10, [32 x i8] c"'uint32_t' (aka 'unsigned int')\00" }18 return x;19}20 21uint32_t implicit_unsigned_integer_truncation() {22 unsigned _BitInt(37) x = 2U;23 x += float_divide_by_zero();24 x += integer_divide_by_zero();25 x = x + 0xFFFFFFFFFFFFFFFFULL;26 // CHECK: constant { i16, i16, [23 x i8] } { i16 0, i16 12, [23 x i8] c"'unsigned _BitInt(37)'\00" }27 uint32_t r = x & 0xFFFFFFFF;28 return r;29}30 31uint32_t array_bounds() {32 _BitInt(37) x[4];33 _BitInt(37) y = x[10];34 // CHECK: constant { i16, i16, [17 x i8] } { i16 -1, i16 0, [17 x i8] c"'_BitInt(37)[4]'\00" }35 return (uint32_t)y;36}37 38uint32_t float_cast_overflow() {39 float a = 100000000.0f;40 _BitInt(7) b = (_BitInt(7))a;41 // CHECK: constant { i16, i16, [19 x i8] } { i16 2, i16 7, [19 x i8] c"'_BitInt(7)'\00\07\00\00\00\00\00" }42 return b;43}44 45_BitInt(13) implicit_signed_integer_truncation() {46 _BitInt(73) x = (_BitInt(73)) ~((~0UL) >> 1);47 return x;48 // CHECK: constant { i16, i16, [20 x i8] } { i16 2, i16 {{([[:xdigit:]]{2})}}, [20 x i8] c"'_BitInt(73)'\00I\00\00\00\00\00" }49 // CHECK: constant { i16, i16, [20 x i8] } { i16 2, i16 9, [20 x i8] c"'_BitInt(13)'\00\0D\00\00\00\00\00" }50}51 52uint32_t negative_shift1(unsigned _BitInt(37) x)53 __attribute__((no_sanitize("memory"))) {54 _BitInt(9) c = -2;55 return x >> c;56 // CHECK: constant { i16, i16, [19 x i8] } { i16 2, i16 9, [19 x i8] c"'_BitInt(9)'\00\09\00\00\00\00\00" }57}58 59uint32_t negative_shift2(unsigned _BitInt(37) x)60 __attribute__((no_sanitize("memory"))) {61 _BitInt(17) c = -2;62 return x >> c;63 // CHECK: constant { i16, i16, [20 x i8] } { i16 2, i16 11, [20 x i8] c"'_BitInt(17)'\00\11\00\00\00\00\00" }64}65 66uint32_t negative_shift3(unsigned _BitInt(37) x)67 __attribute__((no_sanitize("memory"))) {68 _BitInt(34) c = -2;69 return x >> c;70 // CHECK: constant { i16, i16, [20 x i8] } { i16 2, i16 13, [20 x i8] c"'_BitInt(34)'\00\22\00\00\00\00\00" }71}72 73uint32_t negative_shift5(unsigned _BitInt(37) x)74 __attribute__((no_sanitize("memory"))) {75 _BitInt(68) c = -2;76 return x >> c;77 // CHECK: constant { i16, i16, [20 x i8] } { i16 2, i16 {{([[:xdigit:]]{2})}}, [20 x i8] c"'_BitInt(68)'\00D\00\00\00\00\00" }78}79