1f51a89d39
These were ignored by git accidentally. We want ALL OF THEM since they all came in the llvm/clang source distribution.
84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -fsyntax-only -Wconversion -verify %s
|
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin -fsyntax-only -Wconversion %s 2>&1 | FileCheck %s
|
|
|
|
#include <stddef.h>
|
|
|
|
typedef signed char int8_t;
|
|
typedef signed short int16_t;
|
|
typedef signed int int32_t;
|
|
typedef signed long int64_t;
|
|
|
|
typedef unsigned char uint8_t;
|
|
typedef unsigned short uint16_t;
|
|
typedef unsigned int uint32_t;
|
|
typedef unsigned long uint64_t;
|
|
|
|
// <rdar://problem/7909130>
|
|
namespace test0 {
|
|
int32_t test1_positive(char *I, char *E) {
|
|
return (E - I); // expected-warning {{implicit conversion loses integer precision}}
|
|
}
|
|
|
|
int32_t test1_negative(char *I, char *E) {
|
|
return static_cast<int32_t>(E - I);
|
|
}
|
|
|
|
uint32_t test2_positive(uint64_t x) {
|
|
return x; // expected-warning {{implicit conversion loses integer precision}}
|
|
}
|
|
|
|
uint32_t test2_negative(uint64_t x) {
|
|
return (uint32_t) x;
|
|
}
|
|
}
|
|
|
|
namespace test1 {
|
|
uint64_t test1(int x, unsigned y) {
|
|
return sizeof(x == y);
|
|
}
|
|
|
|
uint64_t test2(int x, unsigned y) {
|
|
return __alignof(x == y);
|
|
}
|
|
|
|
void * const foo();
|
|
bool test2(void *p) {
|
|
return p == foo();
|
|
}
|
|
}
|
|
|
|
namespace test2 {
|
|
struct A {
|
|
unsigned int x : 2;
|
|
A() : x(10) {} // expected-warning {{implicit truncation from 'int' to bitfield changes value from 10 to 2}}
|
|
};
|
|
}
|
|
|
|
// This file tests -Wnull-conversion, a subcategory of -Wconversion
|
|
// which is on by default.
|
|
|
|
void test3() {
|
|
int a = NULL; // expected-warning {{implicit conversion of NULL constant to 'int'}}
|
|
int b;
|
|
b = NULL; // expected-warning {{implicit conversion of NULL constant to 'int'}}
|
|
long l = NULL; // FIXME: this should also warn, but currently does not if sizeof(NULL)==sizeof(inttype)
|
|
int c = ((((NULL)))); // expected-warning {{implicit conversion of NULL constant to 'int'}}
|
|
int d;
|
|
d = ((((NULL)))); // expected-warning {{implicit conversion of NULL constant to 'int'}}
|
|
bool bl = NULL; // FIXME: this should warn but we currently suppress a bunch of conversion-to-bool warnings including this one
|
|
char ch = NULL; // expected-warning {{implicit conversion of NULL constant to 'char'}}
|
|
unsigned char uch = NULL; // expected-warning {{implicit conversion of NULL constant to 'unsigned char'}}
|
|
short sh = NULL; // expected-warning {{implicit conversion of NULL constant to 'short'}}
|
|
|
|
// Use FileCheck to ensure we don't get any unnecessary macro-expansion notes
|
|
// (that don't appear as 'real' notes & can't be seen/tested by -verify)
|
|
// CHECK-NOT: note:
|
|
// CHECK: note: expanded from macro 'FNULL'
|
|
#define FNULL NULL
|
|
int a2 = FNULL; // expected-warning {{implicit conversion of NULL constant to 'int'}}
|
|
// CHECK-NOT: note:
|
|
// CHECK: note: expanded from macro 'FINIT'
|
|
#define FINIT int a3 = NULL;
|
|
FINIT // expected-warning {{implicit conversion of NULL constant to 'int'}}
|
|
}
|