// RUN: %clang -x c -fsanitize=implicit-integer-sign-change %s -DV0 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V0 // RUN: %clang -x c -fsanitize=implicit-integer-sign-change %s -DV1 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V1 // RUN: %clang -x c -fsanitize=implicit-integer-sign-change %s -DV2 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V2 // RUN: %clang -x c -fsanitize=implicit-integer-sign-change %s -DV3 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V3 // RUN: %clang -x c -fsanitize=implicit-integer-sign-change %s -DV4 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V4 // RUN: %clang -x c -fsanitize=implicit-integer-sign-change %s -DV5 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V5 // RUN: %clang -x c -fsanitize=implicit-integer-sign-change %s -DV6 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V6 // RUN: %clang -x c++ -fsanitize=implicit-integer-sign-change %s -DV0 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V0 // RUN: %clang -x c++ -fsanitize=implicit-integer-sign-change %s -DV1 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V1 // RUN: %clang -x c++ -fsanitize=implicit-integer-sign-change %s -DV2 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V2 // RUN: %clang -x c++ -fsanitize=implicit-integer-sign-change %s -DV3 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V3 // RUN: %clang -x c++ -fsanitize=implicit-integer-sign-change %s -DV4 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V4 // RUN: %clang -x c++ -fsanitize=implicit-integer-sign-change %s -DV5 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V5 // RUN: %clang -x c++ -fsanitize=implicit-integer-sign-change %s -DV6 -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK-V6 #include // Test plan: // * Two types - int and char // * Two signs - signed and unsigned // * Square that - we have input and output types. // Thus, there are total of (2*2)^2 == 16 tests. // These are all the possible variations/combinations of casts. // However, not all of them should result in the check. // So here, we *only* check which should and which should not result in checks. //============================================================================// // Half of the cases do not need the check. // //============================================================================// uint32_t negative0_convert_unsigned_int_to_unsigned_int(uint32_t x) { return x; } uint8_t negative1_convert_unsigned_char_to_unsigned_char(uint8_t x) { return x; } int32_t negative2_convert_signed_int_to_signed_int(int32_t x) { return x; } int8_t negative3_convert_signed_char_to_signed_char(int8_t x) { return x; } uint8_t negative4_convert_unsigned_int_to_unsigned_char(uint32_t x) { return x; } uint32_t negative5_convert_unsigned_char_to_unsigned_int(uint8_t x) { return x; } int32_t negative6_convert_unsigned_char_to_signed_int(uint8_t x) { return x; } int32_t negative7_convert_signed_char_to_signed_int(int8_t x) { return x; } void test_negatives() { // No bits set. negative0_convert_unsigned_int_to_unsigned_int(0); negative1_convert_unsigned_char_to_unsigned_char(0); negative2_convert_signed_int_to_signed_int(0); negative3_convert_signed_char_to_signed_char(0); negative4_convert_unsigned_int_to_unsigned_char(0); negative5_convert_unsigned_char_to_unsigned_int(0); negative6_convert_unsigned_char_to_signed_int(0); negative7_convert_signed_char_to_signed_int(0); // One lowest bit set. negative0_convert_unsigned_int_to_unsigned_int(1); negative1_convert_unsigned_char_to_unsigned_char(1); negative2_convert_signed_int_to_signed_int(1); negative3_convert_signed_char_to_signed_char(1); negative4_convert_unsigned_int_to_unsigned_char(1); negative5_convert_unsigned_char_to_unsigned_int(1); negative6_convert_unsigned_char_to_signed_int(1); negative7_convert_signed_char_to_signed_int(1); // All source bits set. negative0_convert_unsigned_int_to_unsigned_int((uint32_t)UINT32_MAX); negative1_convert_unsigned_char_to_unsigned_char((uint8_t)UINT8_MAX); negative2_convert_signed_int_to_signed_int((int32_t)INT32_MAX); negative3_convert_signed_char_to_signed_char((int8_t)INT8_MAX); negative4_convert_unsigned_int_to_unsigned_char((uint32_t)UINT32_MAX); negative5_convert_unsigned_char_to_unsigned_int((uint8_t)UINT8_MAX); negative6_convert_unsigned_char_to_signed_int((uint8_t)UINT8_MAX); negative7_convert_signed_char_to_signed_int((int8_t)INT8_MAX); // Source 'sign' bit set. negative0_convert_unsigned_int_to_unsigned_int((uint32_t)INT32_MIN); negative1_convert_unsigned_char_to_unsigned_char((uint8_t)INT8_MIN); negative2_convert_signed_int_to_signed_int((int32_t)INT32_MIN); negative3_convert_signed_char_to_signed_char((int8_t)INT8_MIN); negative4_convert_unsigned_int_to_unsigned_char((uint32_t)INT32_MIN); negative5_convert_unsigned_char_to_unsigned_int((uint8_t)INT8_MIN); negative6_convert_unsigned_char_to_signed_int((uint8_t)INT8_MIN); negative7_convert_signed_char_to_signed_int((int8_t)INT8_MIN); } //============================================================================// // The remaining 8 cases *do* need the check. // //============================================================================// int32_t positive0_convert_unsigned_int_to_signed_int(uint32_t x) { #line 100 return x; } uint32_t positive1_convert_signed_int_to_unsigned_int(int32_t x) { #line 200 return x; } uint8_t positive2_convert_signed_int_to_unsigned_char(int32_t x) { #line 300 return x; } uint8_t positive3_convert_signed_char_to_unsigned_char(int8_t x) { #line 400 return x; } int8_t positive4_convert_unsigned_char_to_signed_char(uint8_t x) { #line 500 return x; } uint32_t positive5_convert_signed_char_to_unsigned_int(int8_t x) { #line 600 return x; } int8_t positive6_convert_unsigned_int_to_signed_char(uint32_t x) { #line 700 return x; } int8_t positive7_convert_signed_int_to_signed_char(int32_t x) { #line 800 return x; } #line 1120 // !!! void test_positives() { // No bits set. positive0_convert_unsigned_int_to_signed_int(0); positive1_convert_signed_int_to_unsigned_int(0); positive2_convert_signed_int_to_unsigned_char(0); positive3_convert_signed_char_to_unsigned_char(0); positive4_convert_unsigned_char_to_signed_char(0); positive5_convert_signed_char_to_unsigned_int(0); positive6_convert_unsigned_int_to_signed_char(0); positive7_convert_signed_int_to_signed_char(0); // One lowest bit set. positive0_convert_unsigned_int_to_signed_int(1); positive1_convert_signed_int_to_unsigned_int(1); positive2_convert_signed_int_to_unsigned_char(1); positive3_convert_signed_char_to_unsigned_char(1); positive4_convert_unsigned_char_to_signed_char(1); positive5_convert_signed_char_to_unsigned_int(1); positive6_convert_unsigned_int_to_signed_char(1); positive7_convert_signed_int_to_signed_char(1); #if defined(V0) // All source bits set. positive0_convert_unsigned_int_to_signed_int((uint32_t)UINT32_MAX); // CHECK-V0: {{.*}}integer-sign-change.c:100:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned int') of value 4294967295 (32-bit, unsigned) to type '{{.*}}' (aka 'int') changed the value to -1 (32-bit, signed) positive1_convert_signed_int_to_unsigned_int((int32_t)UINT32_MAX); // CHECK-V0: {{.*}}integer-sign-change.c:200:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -1 (32-bit, signed) to type '{{.*}}' (aka 'unsigned int') changed the value to 4294967295 (32-bit, unsigned) positive2_convert_signed_int_to_unsigned_char((int32_t)UINT32_MAX); // CHECK-V0: {{.*}}integer-sign-change.c:300:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -1 (32-bit, signed) to type '{{.*}}' (aka 'unsigned char') changed the value to 255 (8-bit, unsigned) positive3_convert_signed_char_to_unsigned_char((int8_t)UINT8_MAX); // CHECK-V0: {{.*}}integer-sign-change.c:400:10: runtime error: implicit conversion from type '{{.*}}' (aka '{{(signed )?}}char') of value -1 (8-bit, signed) to type '{{.*}}' (aka 'unsigned char') changed the value to 255 (8-bit, unsigned) positive4_convert_unsigned_char_to_signed_char((uint8_t)UINT8_MAX); // CHECK-V0: {{.*}}integer-sign-change.c:500:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned char') of value 255 (8-bit, unsigned) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -1 (8-bit, signed) positive5_convert_signed_char_to_unsigned_int((int8_t)UINT8_MAX); // CHECK-V0: {{.*}}integer-sign-change.c:600:10: runtime error: implicit conversion from type '{{.*}}' (aka '{{(signed )?}}char') of value -1 (8-bit, signed) to type '{{.*}}' (aka 'unsigned int') changed the value to 4294967295 (32-bit, unsigned) positive6_convert_unsigned_int_to_signed_char((uint32_t)UINT32_MAX); // CHECK-V0: {{.*}}integer-sign-change.c:700:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned int') of value 4294967295 (32-bit, unsigned) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -1 (8-bit, signed) positive7_convert_signed_int_to_signed_char((int32_t)UINT32_MAX); #elif defined(V1) // Source 'Sign' bit set. positive0_convert_unsigned_int_to_signed_int((uint32_t)INT32_MIN); // CHECK-V1: {{.*}}integer-sign-change.c:100:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned int') of value 2147483648 (32-bit, unsigned) to type '{{.*}}' (aka 'int') changed the value to -2147483648 (32-bit, signed) positive1_convert_signed_int_to_unsigned_int((int32_t)INT32_MIN); // CHECK-V1: {{.*}}integer-sign-change.c:200:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -2147483648 (32-bit, signed) to type '{{.*}}' (aka 'unsigned int') changed the value to 2147483648 (32-bit, unsigned) positive2_convert_signed_int_to_unsigned_char((int32_t)INT32_MIN); // CHECK-V1: {{.*}}integer-sign-change.c:300:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -2147483648 (32-bit, signed) to type '{{.*}}' (aka 'unsigned char') changed the value to 0 (8-bit, unsigned) positive3_convert_signed_char_to_unsigned_char((int8_t)INT8_MIN); // CHECK-V1: {{.*}}integer-sign-change.c:400:10: runtime error: implicit conversion from type '{{.*}}' (aka '{{(signed )?}}char') of value -128 (8-bit, signed) to type '{{.*}}' (aka 'unsigned char') changed the value to 128 (8-bit, unsigned) positive4_convert_unsigned_char_to_signed_char((uint8_t)INT8_MIN); // CHECK-V1: {{.*}}integer-sign-change.c:500:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned char') of value 128 (8-bit, unsigned) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -128 (8-bit, signed) positive5_convert_signed_char_to_unsigned_int((int8_t)INT8_MIN); // CHECK-V1: {{.*}}integer-sign-change.c:600:10: runtime error: implicit conversion from type '{{.*}}' (aka '{{(signed )?}}char') of value -128 (8-bit, signed) to type '{{.*}}' (aka 'unsigned int') changed the value to 4294967168 (32-bit, unsigned) positive6_convert_unsigned_int_to_signed_char((uint32_t)INT32_MIN); positive7_convert_signed_int_to_signed_char((int32_t)INT32_MIN); // CHECK-V1: {{.*}}integer-sign-change.c:800:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -2147483648 (32-bit, signed) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to 0 (8-bit, signed) #elif defined(V2) // All bits except the source 'Sign' bit are set. positive0_convert_unsigned_int_to_signed_int((uint32_t)INT32_MAX); positive1_convert_signed_int_to_unsigned_int((int32_t)INT32_MAX); positive2_convert_signed_int_to_unsigned_char((int32_t)INT32_MAX); positive3_convert_signed_char_to_unsigned_char((int8_t)INT8_MAX); positive4_convert_unsigned_char_to_signed_char((uint8_t)INT8_MAX); positive5_convert_signed_char_to_unsigned_int((int8_t)INT8_MAX); positive6_convert_unsigned_int_to_signed_char((uint32_t)INT32_MAX); // CHECK-V2: {{.*}}integer-sign-change.c:700:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned int') of value 2147483647 (32-bit, unsigned) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -1 (8-bit, signed) positive7_convert_signed_int_to_signed_char((int32_t)INT32_MAX); // CHECK-V2: {{.*}}integer-sign-change.c:800:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value 2147483647 (32-bit, signed) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -1 (8-bit, signed) #elif defined(V3) // All destination bits set. positive0_convert_unsigned_int_to_signed_int((uint32_t)UINT32_MAX); // CHECK-V3: {{.*}}integer-sign-change.c:100:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned int') of value 4294967295 (32-bit, unsigned) to type '{{.*}}' (aka 'int') changed the value to -1 (32-bit, signed) positive1_convert_signed_int_to_unsigned_int((int32_t)UINT32_MAX); // CHECK-V3: {{.*}}integer-sign-change.c:200:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -1 (32-bit, signed) to type '{{.*}}' (aka 'unsigned int') changed the value to 4294967295 (32-bit, unsigned) positive2_convert_signed_int_to_unsigned_char((int32_t)UINT8_MAX); positive3_convert_signed_char_to_unsigned_char((int8_t)UINT8_MAX); // CHECK-V3: {{.*}}integer-sign-change.c:400:10: runtime error: implicit conversion from type '{{.*}}' (aka '{{(signed )?}}char') of value -1 (8-bit, signed) to type '{{.*}}' (aka 'unsigned char') changed the value to 255 (8-bit, unsigned) positive4_convert_unsigned_char_to_signed_char((uint8_t)UINT8_MAX); // CHECK-V3: {{.*}}integer-sign-change.c:500:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned char') of value 255 (8-bit, unsigned) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -1 (8-bit, signed) positive5_convert_signed_char_to_unsigned_int((int8_t)UINT32_MAX); // CHECK-V3: {{.*}}integer-sign-change.c:600:10: runtime error: implicit conversion from type '{{.*}}' (aka '{{(signed )?}}char') of value -1 (8-bit, signed) to type '{{.*}}' (aka 'unsigned int') changed the value to 4294967295 (32-bit, unsigned) positive6_convert_unsigned_int_to_signed_char((uint32_t)UINT8_MAX); // CHECK-V3: {{.*}}integer-sign-change.c:700:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned int') of value 255 (32-bit, unsigned) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -1 (8-bit, signed) positive7_convert_signed_int_to_signed_char((int32_t)UINT8_MAX); // CHECK-V3: {{.*}}integer-sign-change.c:800:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value 255 (32-bit, signed) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -1 (8-bit, signed) #elif defined(V4) // Destination 'sign' bit set. positive0_convert_unsigned_int_to_signed_int((uint32_t)INT32_MIN); // CHECK-V4: {{.*}}integer-sign-change.c:100:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned int') of value 2147483648 (32-bit, unsigned) to type '{{.*}}' (aka 'int') changed the value to -2147483648 (32-bit, signed) positive1_convert_signed_int_to_unsigned_int((int32_t)INT32_MIN); // CHECK-V4: {{.*}}integer-sign-change.c:200:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -2147483648 (32-bit, signed) to type '{{.*}}' (aka 'unsigned int') changed the value to 2147483648 (32-bit, unsigned) positive2_convert_signed_int_to_unsigned_char((int32_t)INT8_MIN); // CHECK-V4: {{.*}}integer-sign-change.c:300:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -128 (32-bit, signed) to type '{{.*}}' (aka 'unsigned char') changed the value to 128 (8-bit, unsigned) positive3_convert_signed_char_to_unsigned_char((int8_t)INT8_MIN); // CHECK-V4: {{.*}}integer-sign-change.c:400:10: runtime error: implicit conversion from type '{{.*}}' (aka '{{(signed )?}}char') of value -128 (8-bit, signed) to type '{{.*}}' (aka 'unsigned char') changed the value to 128 (8-bit, unsigned) positive4_convert_unsigned_char_to_signed_char((uint8_t)INT8_MIN); // CHECK-V4: {{.*}}integer-sign-change.c:500:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned char') of value 128 (8-bit, unsigned) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -128 (8-bit, signed) positive5_convert_signed_char_to_unsigned_int((int8_t)INT32_MIN); positive6_convert_unsigned_int_to_signed_char((uint32_t)INT8_MIN); // CHECK-V4: {{.*}}integer-sign-change.c:700:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned int') of value 4294967168 (32-bit, unsigned) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -128 (8-bit, signed) positive7_convert_signed_int_to_signed_char((int32_t)INT8_MIN); #elif defined(V5) // All bits except the destination 'sign' bit are set. positive0_convert_unsigned_int_to_signed_int((uint32_t)INT32_MIN); // CHECK-V5: {{.*}}integer-sign-change.c:100:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned int') of value 2147483648 (32-bit, unsigned) to type '{{.*}}' (aka 'int') changed the value to -2147483648 (32-bit, signed) positive1_convert_signed_int_to_unsigned_int((int32_t)INT32_MIN); // CHECK-V5: {{.*}}integer-sign-change.c:200:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -2147483648 (32-bit, signed) to type '{{.*}}' (aka 'unsigned int') changed the value to 2147483648 (32-bit, unsigned) positive2_convert_signed_int_to_unsigned_char((int32_t)(~((uint32_t)(uint8_t)INT8_MIN))); // CHECK-V5: {{.*}}integer-sign-change.c:300:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -129 (32-bit, signed) to type '{{.*}}' (aka 'unsigned char') changed the value to 127 (8-bit, unsigned) positive3_convert_signed_char_to_unsigned_char((int8_t)(INT8_MIN)); // CHECK-V5: {{.*}}integer-sign-change.c:400:10: runtime error: implicit conversion from type '{{.*}}' (aka '{{(signed )?}}char') of value -128 (8-bit, signed) to type '{{.*}}' (aka 'unsigned char') changed the value to 128 (8-bit, unsigned) positive4_convert_unsigned_char_to_signed_char((uint8_t)(INT8_MIN)); // CHECK-V5: {{.*}}integer-sign-change.c:500:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned char') of value 128 (8-bit, unsigned) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -128 (8-bit, signed) positive5_convert_signed_char_to_unsigned_int((int8_t)(INT32_MIN)); positive6_convert_unsigned_int_to_signed_char(~((uint32_t)(uint8_t)INT8_MIN)); positive7_convert_signed_int_to_signed_char((int32_t)(~((uint32_t)((uint8_t)INT8_MIN)))); // CHECK-V5: {{.*}}integer-sign-change.c:800:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -129 (32-bit, signed) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to 127 (8-bit, signed) #elif defined(V6) // Only the source and destination sign bits are set. positive0_convert_unsigned_int_to_signed_int((uint32_t)INT32_MIN); // CHECK-V6: {{.*}}integer-sign-change.c:100:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned int') of value 2147483648 (32-bit, unsigned) to type '{{.*}}' (aka 'int') changed the value to -2147483648 (32-bit, signed) positive1_convert_signed_int_to_unsigned_int((int32_t)INT32_MIN); // CHECK-V6: {{.*}}integer-sign-change.c:200:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -2147483648 (32-bit, signed) to type '{{.*}}' (aka 'unsigned int') changed the value to 2147483648 (32-bit, unsigned) positive2_convert_signed_int_to_unsigned_char((int32_t)((uint32_t)INT32_MIN | (uint32_t)((uint8_t)INT8_MIN))); // CHECK-V6: {{.*}}integer-sign-change.c:300:10: runtime error: implicit conversion from type '{{.*}}' (aka 'int') of value -2147483520 (32-bit, signed) to type '{{.*}}' (aka 'unsigned char') changed the value to 128 (8-bit, unsigned) positive3_convert_signed_char_to_unsigned_char((int8_t)INT8_MIN); // CHECK-V6: {{.*}}integer-sign-change.c:400:10: runtime error: implicit conversion from type '{{.*}}' (aka '{{(signed )?}}char') of value -128 (8-bit, signed) to type '{{.*}}' (aka 'unsigned char') changed the value to 128 (8-bit, unsigned) positive4_convert_unsigned_char_to_signed_char((uint8_t)INT8_MIN); // CHECK-V6: {{.*}}integer-sign-change.c:500:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned char') of value 128 (8-bit, unsigned) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -128 (8-bit, signed) positive5_convert_signed_char_to_unsigned_int((int8_t)INT8_MIN); // CHECK-V6: {{.*}}integer-sign-change.c:600:10: runtime error: implicit conversion from type '{{.*}}' (aka '{{(signed )?}}char') of value -128 (8-bit, signed) to type '{{.*}}' (aka 'unsigned int') changed the value to 4294967168 (32-bit, unsigned) positive6_convert_unsigned_int_to_signed_char((uint32_t)((uint32_t)INT32_MIN | (uint32_t)((uint8_t)INT8_MIN))); // CHECK-V6: {{.*}}integer-sign-change.c:700:10: runtime error: implicit conversion from type '{{.*}}' (aka 'unsigned int') of value 2147483776 (32-bit, unsigned) to type '{{.*}}' (aka '{{(signed )?}}char') changed the value to -128 (8-bit, signed) positive7_convert_signed_int_to_signed_char((int32_t)((uint32_t)INT32_MIN | (uint32_t)((uint8_t)INT8_MIN))); #else #error Some V* needs to be defined! #endif } // CHECK-NOT: implicit conversion int main() { test_negatives(); test_positives(); return 0; }