forked from OSchip/llvm-project
118 lines
4.3 KiB
C
118 lines
4.3 KiB
C
// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.core,debug.ExprInspection,unix.Malloc,unix.cstring,alpha.unix.cstring,unix.API,osx.API,osx.cocoa.RetainCount -Wno-null-dereference -Wno-tautological-compare -analyzer-store=region -fblocks -verify -analyzer-config eagerly-assume=false %s
|
|
#define NULL 0
|
|
void clang_analyzer_eval(int);
|
|
void myFunc();
|
|
void myWeakFunc() __attribute__((weak_import));
|
|
|
|
void testWeakFuncIsNull()
|
|
{
|
|
clang_analyzer_eval(myFunc == NULL); // expected-warning{{FALSE}}
|
|
clang_analyzer_eval(myWeakFunc == NULL); // expected-warning{{UNKNOWN}}
|
|
if (myWeakFunc == NULL) {
|
|
clang_analyzer_eval(myWeakFunc == NULL); // expected-warning{{TRUE}}
|
|
} else {
|
|
clang_analyzer_eval(myWeakFunc == NULL); // expected-warning{{FALSE}}
|
|
}
|
|
}
|
|
|
|
void testWeakFuncIsNot()
|
|
{
|
|
clang_analyzer_eval(myWeakFunc == NULL); // expected-warning{{UNKNOWN}}
|
|
if (!myWeakFunc) {
|
|
clang_analyzer_eval(myWeakFunc == NULL); // expected-warning{{TRUE}}
|
|
} else {
|
|
clang_analyzer_eval(myWeakFunc == NULL); // expected-warning{{FALSE}}
|
|
}
|
|
}
|
|
|
|
void testWeakFuncIsTrue()
|
|
{
|
|
clang_analyzer_eval(myWeakFunc == NULL); // expected-warning{{UNKNOWN}}
|
|
if (myWeakFunc) {
|
|
clang_analyzer_eval(myWeakFunc == NULL); // expected-warning{{FALSE}}
|
|
} else {
|
|
clang_analyzer_eval(myWeakFunc == NULL); // expected-warning{{TRUE}}
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===
|
|
// func.c
|
|
//===----------------------------------------------------------------------===
|
|
void f(void) __attribute__((weak_import));
|
|
void g(void (*fp)(void)) __attribute__((weak_import));
|
|
|
|
void f(void) {
|
|
void (*p)(void);
|
|
p = f;
|
|
p = &f;
|
|
p();
|
|
(*p)();
|
|
}
|
|
|
|
void g(void (*fp)(void));
|
|
|
|
void f2() {
|
|
g(f);
|
|
}
|
|
|
|
void f3(void (*f)(void), void (*g)(void)) {
|
|
clang_analyzer_eval(!f); // expected-warning{{UNKNOWN}}
|
|
f();
|
|
clang_analyzer_eval(!f); // expected-warning{{FALSE}}
|
|
|
|
clang_analyzer_eval(!g); // expected-warning{{UNKNOWN}}
|
|
(*g)();
|
|
clang_analyzer_eval(!g); // expected-warning{{FALSE}}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===
|
|
// free.c
|
|
//===----------------------------------------------------------------------===
|
|
void free(void *) __attribute__((weak_import));
|
|
|
|
void t10 () {
|
|
free((void*)&t10); // expected-warning {{Argument to free() is the address of the function 't10', which is not memory allocated by malloc()}}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===
|
|
// string.c : strnlen()
|
|
//===----------------------------------------------------------------------===
|
|
typedef typeof(sizeof(int)) size_t;
|
|
size_t strlen(const char *s) __attribute__((weak_import));
|
|
|
|
size_t strlen_fn() {
|
|
return strlen((char*)&strlen_fn); // expected-warning{{Argument to string length function is the address of the function 'strlen_fn', which is not a null-terminated string}}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===
|
|
// unix-fns.c : dispatch_once
|
|
//===----------------------------------------------------------------------===
|
|
typedef void (^dispatch_block_t)(void);
|
|
typedef long dispatch_once_t;
|
|
void dispatch_once(dispatch_once_t *predicate, dispatch_block_t block) __attribute__((weak_import));
|
|
|
|
void test_dispatch_once() {
|
|
dispatch_once_t pred = 0;
|
|
do { if (__builtin_expect(*(&pred), ~0l) != ~0l) dispatch_once((&pred), (^() {})); } while (0); // expected-warning{{Call to 'dispatch_once' uses the local variable 'pred' for the predicate value}}
|
|
}
|
|
void test_dispatch_once_neg() {
|
|
static dispatch_once_t pred = 0;
|
|
do { if (__builtin_expect(*(&pred), ~0l) != ~0l) dispatch_once((&pred), (^() {})); } while (0); // no-warning
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===
|
|
// retain-release-path-notes.m
|
|
//===----------------------------------------------------------------------===
|
|
typedef struct CFType *CFTypeRef;
|
|
CFTypeRef CFCreateSomething() __attribute__((weak_import));
|
|
CFTypeRef CFGetSomething() __attribute__((weak_import));
|
|
|
|
CFTypeRef CFCopyRuleViolation () {
|
|
CFTypeRef object = CFGetSomething();
|
|
return object; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}}
|
|
}
|
|
|
|
CFTypeRef CFGetRuleViolation () {
|
|
CFTypeRef object = CFCreateSomething(); // expected-warning{{Potential leak of an object stored into 'object'}}
|
|
return object; }
|