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// RUN: clang-cc -analyze -checker-cfref -verify %s &&
// RUN: clang-cc -analyze -checker-cfref -analyzer-store=region -verify %s
struct FPRec {
void (*my_func)(int * x);
};
int bar(int x);
int f1_a(struct FPRec* foo) {
int x;
(*foo->my_func)(&x);
return bar(x)+1; // no-warning
}
int f1_b() {
int x;
return bar(x)+1; // expected-warning{{Pass-by-value argument in function call is undefined.}}
}
int f2() {
int x;
if (x+1) // expected-warning{{Branch}}
return 1;
return 2;
}
int f2_b() {
int x;
return ((x+1)+2+((x))) + 1 ? 1 : 2; // expected-warning{{Branch}}
}
int f3(void) {
int i;
int *p = &i;
if (*p > 0) // expected-warning{{Branch condition evaluates to an uninitialized value}}
return 0;
else
return 1;
}
void f4_aux(float* x);
float f4(void) {
float x;
f4_aux(&x);
return x; // no-warning
}
struct f5_struct { int x; };
void f5_aux(struct f5_struct* s);
int f5(void) {
struct f5_struct s;
f5_aux(&s);
return s.x; // no-warning
}
int ret_uninit() {
int i;
int *p = &i;
return *p; // expected-warning{{Uninitialized or undefined value returned to caller.}}
}
// <rdar://problem/6451816>
typedef unsigned char Boolean;
typedef const struct __CFNumber * CFNumberRef;
typedef signed long CFIndex;
typedef CFIndex CFNumberType;
typedef unsigned long UInt32;
typedef UInt32 CFStringEncoding;
typedef const struct __CFString * CFStringRef;
extern Boolean CFNumberGetValue(CFNumberRef number, CFNumberType theType, void *valuePtr);
extern CFStringRef CFStringConvertEncodingToIANACharSetName(CFStringEncoding encoding);
CFStringRef rdar_6451816(CFNumberRef nr) {
CFStringEncoding encoding;
// &encoding is casted to void*. This test case tests whether or not
// we properly invalidate the value of 'encoding'.
CFNumberGetValue(nr, 9, &encoding);
return CFStringConvertEncodingToIANACharSetName(encoding); // no-warning
}
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