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// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.Malloc,debug.ExprInspection -verify %s
typedef unsigned int NSUInteger;
typedef __typeof__(sizeof(int)) size_t;
void *malloc(size_t);
void *calloc(size_t nmemb, size_t size);
void free(void *);
void clang_analyzer_eval(int);
@interface A
- (NSUInteger)foo;
@end
NSUInteger f8(A* x){
const NSUInteger n = [x foo];
int* bogus;
if (n > 0) { // tests const cast transfer function logic
NSUInteger i;
for (i = 0; i < n; ++i)
bogus = 0;
if (bogus) // no-warning
return n+1;
}
return n;
}
// PR10163 -- don't warn for default-initialized float arrays.
// (An additional test is in uninit-vals-ps-region.m)
void test_PR10163(float);
void PR10163 (void) {
float x[2] = {0};
test_PR10163(x[1]); // no-warning
}
typedef struct {
float x;
float y;
float z;
} Point;
typedef struct {
Point origin;
int size;
} Circle;
Point makePoint(float x, float y) {
Point result;
result.x = x;
result.y = y;
result.z = 0.0;
return result;
}
void PR14765_test() {
Circle *testObj = calloc(sizeof(Circle), 1);
clang_analyzer_eval(testObj->size == 0); // expected-warning{{TRUE}}
testObj->origin = makePoint(0.0, 0.0);
if (testObj->size > 0) { ; } // warning occurs here
// FIXME: Assigning to 'testObj->origin' kills the default binding for the
// whole region, meaning that we've forgotten that testObj->size should also
// default to 0. Tracked by <rdar://problem/12701038>.
// This should be TRUE.
clang_analyzer_eval(testObj->size == 0); // expected-warning{{UNKNOWN}}
free(testObj);
}
void PR14765_argument(Circle *testObj) {
int oldSize = testObj->size;
clang_analyzer_eval(testObj->size == oldSize); // expected-warning{{TRUE}}
testObj->origin = makePoint(0.0, 0.0);
clang_analyzer_eval(testObj->size == oldSize); // expected-warning{{TRUE}}
}
typedef struct {
int x;
int y;
int z;
} IntPoint;
typedef struct {
IntPoint origin;
int size;
} IntCircle;
IntPoint makeIntPoint(int x, int y) {
IntPoint result;
result.x = x;
result.y = y;
result.z = 0;
return result;
}
void PR14765_test_int() {
IntCircle *testObj = calloc(sizeof(IntCircle), 1);
clang_analyzer_eval(testObj->size == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.x == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.y == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.z == 0); // expected-warning{{TRUE}}
testObj->origin = makeIntPoint(1, 2);
if (testObj->size > 0) { ; } // warning occurs here
// FIXME: Assigning to 'testObj->origin' kills the default binding for the
// whole region, meaning that we've forgotten that testObj->size should also
// default to 0. Tracked by <rdar://problem/12701038>.
// This should be TRUE.
clang_analyzer_eval(testObj->size == 0); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(testObj->origin.x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.y == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.z == 0); // expected-warning{{TRUE}}
free(testObj);
}
void PR14765_argument_int(IntCircle *testObj) {
int oldSize = testObj->size;
clang_analyzer_eval(testObj->size == oldSize); // expected-warning{{TRUE}}
testObj->origin = makeIntPoint(1, 2);
clang_analyzer_eval(testObj->size == oldSize); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.y == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.z == 0); // expected-warning{{TRUE}}
}
void rdar13292559(Circle input) {
extern void useCircle(Circle);
Circle obj = input;
useCircle(obj); // no-warning
// This generated an "uninitialized 'size' field" warning for a (short) while.
obj.origin = makePoint(0.0, 0.0);
useCircle(obj); // no-warning
}
typedef struct {
int x;
int y;
} IntPoint2D;
typedef struct {
IntPoint2D origin;
int size;
} IntCircle2D;
IntPoint2D makeIntPoint2D(int x, int y) {
IntPoint2D result;
result.x = x;
result.y = y;
return result;
}
void testSmallStructsCopiedPerField() {
IntPoint2D a;
a.x = 0;
IntPoint2D b = a;
extern void useInt(int);
useInt(b.x); // no-warning
useInt(b.y); // expected-warning{{uninitialized}}
}
void testLargeStructsNotCopiedPerField() {
IntPoint a;
a.x = 0;
IntPoint b = a;
extern void useInt(int);
useInt(b.x); // no-warning
useInt(b.y); // no-warning
}
void testSmallStructInLargerStruct() {
IntCircle2D *testObj = calloc(sizeof(IntCircle2D), 1);
clang_analyzer_eval(testObj->size == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.x == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.y == 0); // expected-warning{{TRUE}}
testObj->origin = makeIntPoint2D(1, 2);
if (testObj->size > 0) { ; } // warning occurs here
clang_analyzer_eval(testObj->size == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.y == 2); // expected-warning{{TRUE}}
free(testObj);
}
void testCopySmallStructIntoArgument(IntCircle2D *testObj) {
int oldSize = testObj->size;
clang_analyzer_eval(testObj->size == oldSize); // expected-warning{{TRUE}}
testObj->origin = makeIntPoint2D(1, 2);
clang_analyzer_eval(testObj->size == oldSize); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(testObj->origin.y == 2); // expected-warning{{TRUE}}
}
void testSmallStructBitfields() {
struct {
int x : 4;
int y : 4;
} a, b;
a.x = 1;
a.y = 2;
b = a;
clang_analyzer_eval(b.x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(b.y == 2); // expected-warning{{TRUE}}
}
void testSmallStructBitfieldsFirstUndef() {
struct {
int x : 4;
int y : 4;
} a, b;
a.y = 2;
b = a;
clang_analyzer_eval(b.y == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(b.x == 1); // expected-warning{{garbage}}
}
void testSmallStructBitfieldsSecondUndef() {
struct {
int x : 4;
int y : 4;
} a, b;
a.x = 1;
b = a;
clang_analyzer_eval(b.x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(b.y == 2); // expected-warning{{garbage}}
}
void testSmallStructBitfieldsFirstUnnamed() {
struct {
int : 4;
int y : 4;
} a, b, c;
a.y = 2;
b = a;
clang_analyzer_eval(b.y == 2); // expected-warning{{TRUE}}
b = c;
clang_analyzer_eval(b.y == 2); // expected-warning{{garbage}}
}
void testSmallStructBitfieldsSecondUnnamed() {
struct {
int x : 4;
int : 4;
} a, b, c;
a.x = 1;
b = a;
clang_analyzer_eval(b.x == 1); // expected-warning{{TRUE}}
b = c;
clang_analyzer_eval(b.x == 1); // expected-warning{{garbage}}
}
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