59 lines · c
1// RUN: %clang_cc1 %s -verify=expected -Wimplicit-int-conversion2// RUN: %clang_cc1 %s -verify=none -Wimplicit-int-conversion -Wno-implicit-int-conversion-on-negation3 4// none-no-diagnostics5 6char test_char(char x) {7 return -x; // expected-warning {{implicit conversion loses integer precision: 'int' to 'char' on negation}}8}9 10unsigned char test_unsigned_char(unsigned char x) {11 return -x; // expected-warning {{implicit conversion loses integer precision: 'int' to 'unsigned char' on negation}}12}13 14short test_short(short x) {15 return -x; // expected-warning {{implicit conversion loses integer precision: 'int' to 'short' on negation}}16}17 18unsigned short test_unsigned_short(unsigned short x) {19 return -x; // expected-warning {{implicit conversion loses integer precision: 'int' to 'unsigned short' on negation}}20}21 22// --- int-width and wider (should NOT warn) ---23 24int test_i(int x) {25 return -x;26}27 28unsigned int test_ui(unsigned int x) {29 return -x;30}31 32long test_l(long x) {33 return -x;34}35 36unsigned long test_ul(unsigned long x) {37 return -x;38}39 40long long test_ll(long long x) {41 return -x;42}43 44unsigned long long test_ull(unsigned long long x) {45 return -x;46}47 48unsigned _BitInt(16) test_unsigned_bit_int(unsigned _BitInt(16) x) {49 return -x;50}51 52unsigned test_shift_minus(int i) {53 return -(1 << i);54}55 56unsigned test_shift_not(int i) {57 return ~(1 << i);58}59