1 // REQUIRES: x86-registered-target 2 // 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 %s 3 4 // The runtime test checking the _BitInt ubsan feature is located in compiler-rt/test/ubsan/TestCases/Integer/bit-int.c 5 6 typedef unsigned int uint32_t; 7 uint32_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 15 uint32_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 21 uint32_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 31 uint32_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 38 uint32_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 52 uint32_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 59 uint32_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 66 uint32_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 73 uint32_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