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// RUN: %clang_cc1 -fsyntax-only -verify -Wconversion -triple x86_64-apple-darwin %s
#define BIG 0x7f7f7f7f7f7f7f7fL
void test0(char c, short s, int i, long l, long long ll) {
c = c;
c = s; // expected-warning {{implicit cast loses integer precision}}
c = i; // expected-warning {{implicit cast loses integer precision}}
c = l; // expected-warning {{implicit cast loses integer precision}}
s = c;
s = s;
s = i; // expected-warning {{implicit cast loses integer precision}}
s = l; // expected-warning {{implicit cast loses integer precision}}
i = c;
i = s;
i = i;
i = l; // expected-warning {{implicit cast loses integer precision}}
l = c;
l = s;
l = i;
l = l;
c = (char) 0;
c = (short) 0;
c = (int) 0;
c = (long) 0;
s = (char) 0;
s = (short) 0;
s = (int) 0;
s = (long) 0;
i = (char) 0;
i = (short) 0;
i = (int) 0;
i = (long) 0;
l = (char) 0;
l = (short) 0;
l = (int) 0;
l = (long) 0;
c = (char) BIG;
c = (short) BIG; // expected-warning {{implicit cast loses integer precision}}
c = (int) BIG; // expected-warning {{implicit cast loses integer precision}}
c = (long) BIG; // expected-warning {{implicit cast loses integer precision}}
s = (char) BIG;
s = (short) BIG;
s = (int) BIG; // expected-warning {{implicit cast loses integer precision}}
s = (long) BIG; // expected-warning {{implicit cast loses integer precision}}
i = (char) BIG;
i = (short) BIG;
i = (int) BIG;
i = (long) BIG; // expected-warning {{implicit cast loses integer precision}}
l = (char) BIG;
l = (short) BIG;
l = (int) BIG;
l = (long) BIG;
}
char test1(long long ll) {
return (long long) ll; // expected-warning {{implicit cast loses integer precision}}
return (long) ll; // expected-warning {{implicit cast loses integer precision}}
return (int) ll; // expected-warning {{implicit cast loses integer precision}}
return (short) ll; // expected-warning {{implicit cast loses integer precision}}
return (char) ll;
return (long long) BIG; // expected-warning {{implicit cast loses integer precision}}
return (long) BIG; // expected-warning {{implicit cast loses integer precision}}
return (int) BIG; // expected-warning {{implicit cast loses integer precision}}
return (short) BIG; // expected-warning {{implicit cast loses integer precision}}
return (char) BIG;
}
short test2(long long ll) {
return (long long) ll; // expected-warning {{implicit cast loses integer precision}}
return (long) ll; // expected-warning {{implicit cast loses integer precision}}
return (int) ll; // expected-warning {{implicit cast loses integer precision}}
return (short) ll;
return (char) ll;
return (long long) BIG; // expected-warning {{implicit cast loses integer precision}}
return (long) BIG; // expected-warning {{implicit cast loses integer precision}}
return (int) BIG; // expected-warning {{implicit cast loses integer precision}}
return (short) BIG;
return (char) BIG;
}
int test3(long long ll) {
return (long long) ll; // expected-warning {{implicit cast loses integer precision}}
return (long) ll; // expected-warning {{implicit cast loses integer precision}}
return (int) ll;
return (short) ll;
return (char) ll;
return (long long) BIG; // expected-warning {{implicit cast loses integer precision}}
return (long) BIG; // expected-warning {{implicit cast loses integer precision}}
return (int) BIG;
return (short) BIG;
return (char) BIG;
}
long test4(long long ll) {
return (long long) ll;
return (long) ll;
return (int) ll;
return (short) ll;
return (char) ll;
return (long long) BIG;
return (long) BIG;
return (int) BIG;
return (short) BIG;
return (char) BIG;
}
long long test5(long long ll) {
return (long long) ll;
return (long) ll;
return (int) ll;
return (short) ll;
return (char) ll;
return (long long) BIG;
return (long) BIG;
return (int) BIG;
return (short) BIG;
return (char) BIG;
}
void takes_char(char);
void takes_short(short);
void takes_int(int);
void takes_long(long);
void takes_longlong(long long);
void takes_float(float);
void takes_double(double);
void takes_longdouble(long double);
void test6(char v) {
takes_char(v);
takes_short(v);
takes_int(v);
takes_long(v);
takes_longlong(v);
takes_float(v);
takes_double(v);
takes_longdouble(v);
}
void test7(short v) {
takes_char(v); // expected-warning {{implicit cast loses integer precision}}
takes_short(v);
takes_int(v);
takes_long(v);
takes_longlong(v);
takes_float(v);
takes_double(v);
takes_longdouble(v);
}
void test8(int v) {
takes_char(v); // expected-warning {{implicit cast loses integer precision}}
takes_short(v); // expected-warning {{implicit cast loses integer precision}}
takes_int(v);
takes_long(v);
takes_longlong(v);
takes_float(v);
takes_double(v);
takes_longdouble(v);
}
void test9(long v) {
takes_char(v); // expected-warning {{implicit cast loses integer precision}}
takes_short(v); // expected-warning {{implicit cast loses integer precision}}
takes_int(v); // expected-warning {{implicit cast loses integer precision}}
takes_long(v);
takes_longlong(v);
takes_float(v);
takes_double(v);
takes_longdouble(v);
}
void test10(long long v) {
takes_char(v); // expected-warning {{implicit cast loses integer precision}}
takes_short(v); // expected-warning {{implicit cast loses integer precision}}
takes_int(v); // expected-warning {{implicit cast loses integer precision}}
takes_long(v);
takes_longlong(v);
takes_float(v);
takes_double(v);
takes_longdouble(v);
}
void test11(float v) {
takes_char(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_short(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_int(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_long(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_longlong(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_float(v);
takes_double(v);
takes_longdouble(v);
}
void test12(double v) {
takes_char(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_short(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_int(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_long(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_longlong(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_float(v); // expected-warning {{implicit cast loses floating-point precision}}
takes_double(v);
takes_longdouble(v);
}
void test13(long double v) {
takes_char(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_short(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_int(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_long(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_longlong(v); // expected-warning {{implicit cast turns floating-point number into integer}}
takes_float(v); // expected-warning {{implicit cast loses floating-point precision}}
takes_double(v); // expected-warning {{implicit cast loses floating-point precision}}
takes_longdouble(v);
}
void test14(long l) {
// Fine because of the boolean whitelist.
char c;
c = (l == 4);
c = ((l <= 4) && (l >= 0));
c = ((l <= 4) && (l >= 0)) || (l > 20);
}
void test15(char c) {
c = c + 1 + c * 2;
c = (short) c + 1 + c * 2; // expected-warning {{implicit cast loses integer precision}}
}
// PR 5422
extern void *test16_external;
void test16(void) {
int a = (unsigned long) &test16_external; // expected-warning {{implicit cast loses integer precision}}
}
// PR 5938
void test17() {
union {
unsigned long long a : 8;
unsigned long long b : 32;
unsigned long long c;
} U;
unsigned int x;
x = U.a;
x = U.b;
x = U.c; // expected-warning {{implicit cast loses integer precision}}
}
// PR 5939
void test18() {
union {
unsigned long long a : 1;
unsigned long long b;
} U;
int x;
x = (U.a ? 0 : 1);
x = (U.b ? 0 : 1);
}
// None of these should warn.
unsigned char test19(unsigned long u64) {
unsigned char x1 = u64 & 0xff;
unsigned char x2 = u64 >> 56;
unsigned char mask = 0xee;
unsigned char x3 = u64 & mask;
return x1 + x2 + x3;
}
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