inline-defensive-checks.cpp revision a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40
10415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks// RUN: %clang_cc1 -analyze -analyzer-checker=core -verify %s
20415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks// expected-no-diagnostics
30415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks
4a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaksextern void __assert_fail (__const char *__assertion, __const char *__file,
5a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks                           unsigned int __line, __const char *__function)
6a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks__attribute__ ((__noreturn__));
7a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks#define assert(expr) \
8a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks((expr)  ? (void)(0)  : __assert_fail (#expr, __FILE__, __LINE__, __func__))
9a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks
100415998dd77986630efe8f1aed633519cc41e1f3Anna Zaksclass ButterFly {
110415998dd77986630efe8f1aed633519cc41e1f3Anna Zaksprivate:
120415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks  ButterFly() { }
130415998dd77986630efe8f1aed633519cc41e1f3Anna Zakspublic:
140415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks	int triggerderef() {
150415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks		return 0;
160415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks	}
170415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks};
180415998dd77986630efe8f1aed633519cc41e1f3Anna ZaksButterFly *getInP();
190415998dd77986630efe8f1aed633519cc41e1f3Anna Zaksclass X{
200415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks	ButterFly *p;
210415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks	void setP(ButterFly *inP) {
220415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks		if(inP)
230415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks      ;
240415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks		p = inP;
250415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks	};
260415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks	void subtest1() {
270415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks		ButterFly *inP = getInP();
280415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks		setP(inP);
290415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks	}
300415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks	int subtest2() {
310415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks		int c = p->triggerderef(); // no-warning
320415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks		return c;
330415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks	}
340415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks	int test() {
350415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks		subtest1();
360415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks		return subtest2();
370415998dd77986630efe8f1aed633519cc41e1f3Anna Zaks	}
38a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks};
39a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks
40a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zakstypedef const int *Ty;
41a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaksextern
42a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna ZaksTy notNullArg(Ty cf) __attribute__((nonnull));
43a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zakstypedef const void *CFTypeRef;
44a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaksextern Ty getTyVal();
45a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaksinline void radar13224271_callee(Ty def, Ty& result ) {
46a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks	result = def;
47a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks  // Clearly indicates that result cannot be 0 if def is not NULL.
48a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks	assert( (result != 0) || (def == 0) );
49a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks}
50a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaksvoid radar13224271_caller()
51a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks{
52a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks	Ty value;
53a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks	radar13224271_callee(getTyVal(), value );
54a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks	notNullArg(value); // no-warning
55a4bb4f6ca8dd31ad96cb9526a5abe1273f18ff40Anna Zaks}