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// RUN: %clang -x c -fsanitize=implicit-signed-integer-truncation -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
// RUN: %clang -x c -fsanitize=implicit-signed-integer-truncation -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
// RUN: %clang -x c -fsanitize=implicit-signed-integer-truncation -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
// RUN: %clang -x c -fsanitize=implicit-signed-integer-truncation -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
// RUN: %clang -x c++ -fsanitize=implicit-signed-integer-truncation -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
// RUN: %clang -x c++ -fsanitize=implicit-signed-integer-truncation -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
// RUN: %clang -x c++ -fsanitize=implicit-signed-integer-truncation -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
// RUN: %clang -x c++ -fsanitize=implicit-signed-integer-truncation -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
void test_unsigned() {
unsigned char x;
x = 0;
x++;
x = 0;
++x;
x = 0;
x--;
// CHECK: {{.*}}signed-integer-truncation-incdec.c:[[@LINE-1]]:4: runtime error: implicit conversion from type 'int' of value -1 (32-bit, signed) to type 'unsigned char' changed the value to 255 (8-bit, unsigned)
x = 0;
--x;
// CHECK: {{.*}}signed-integer-truncation-incdec.c:[[@LINE-1]]:3: runtime error: implicit conversion from type 'int' of value -1 (32-bit, signed) to type 'unsigned char' changed the value to 255 (8-bit, unsigned)
x = 1;
x++;
x = 1;
++x;
x = 1;
x--;
x = 1;
--x;
x = 254;
x++;
x = 254;
++x;
x = 254;
x--;
x = 254;
--x;
x = 255;
x++;
// CHECK: {{.*}}signed-integer-truncation-incdec.c:[[@LINE-1]]:4: runtime error: implicit conversion from type 'int' of value 256 (32-bit, signed) to type 'unsigned char' changed the value to 0 (8-bit, unsigned)
x = 255;
++x;
// CHECK: {{.*}}signed-integer-truncation-incdec.c:[[@LINE-1]]:3: runtime error: implicit conversion from type 'int' of value 256 (32-bit, signed) to type 'unsigned char' changed the value to 0 (8-bit, unsigned)
x = 255;
x--;
x = 255;
--x;
}
void test_signed() {
signed char x;
x = -128;
x++;
x = -128;
++x;
x = -128;
x--;
// CHECK: {{.*}}signed-integer-truncation-incdec.c:[[@LINE-1]]:4: runtime error: implicit conversion from type 'int' of value -129 (32-bit, signed) to type 'signed char' changed the value to 127 (8-bit, signed)
x = -128;
--x;
// CHECK: {{.*}}signed-integer-truncation-incdec.c:[[@LINE-1]]:3: runtime error: implicit conversion from type 'int' of value -129 (32-bit, signed) to type 'signed char' changed the value to 127 (8-bit, signed)
x = -1;
x++;
x = -1;
++x;
x = -1;
x--;
x = -1;
--x;
x = 0;
x++;
x = 0;
++x;
x = 0;
x--;
x = 0;
--x;
x = 1;
x++;
x = 1;
++x;
x = 1;
x--;
x = 1;
--x;
x = 127;
x++;
// CHECK: {{.*}}signed-integer-truncation-incdec.c:[[@LINE-1]]:4: runtime error: implicit conversion from type 'int' of value 128 (32-bit, signed) to type 'signed char' changed the value to -128 (8-bit, signed)
x = 127;
++x;
// CHECK: {{.*}}signed-integer-truncation-incdec.c:[[@LINE-1]]:3: runtime error: implicit conversion from type 'int' of value 128 (32-bit, signed) to type 'signed char' changed the value to -128 (8-bit, signed)
x = 127;
x--;
x = 127;
--x;
}
int main() {
test_unsigned();
test_signed();
return 0;
}
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