e37ab50a6e
This fixes a few cases where we'd emit path notes like this: +---+ 1| v p = malloc(len); ^ |2 +---+ In general this should make path notes more consistent and more correct, especially in cases where the leak happens on the false branch of an if that jumps directly to the end of the function. There are a couple places where the leak is reported farther away from the cause; these are usually cases where there are several levels of nested braces before the end of the function. This still matches our current behavior for when there /is/ a statement after all the braces, though. llvm-svn: 168070
63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
// RUN: %clang_cc1 -analyze -analyzer-checker=core,alpha.deadcode.UnreachableCode,alpha.core.CastSize,unix.Malloc -analyzer-store=region -verify %s
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typedef __typeof(sizeof(int)) size_t;
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void *malloc(size_t);
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void free(void *);
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void *realloc(void *ptr, size_t size);
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void *calloc(size_t nmemb, size_t size);
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void checkThatMallocCheckerIsRunning() {
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malloc(4);
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} // expected-warning{{leak}}
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// Test for radar://11110132.
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struct Foo {
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mutable void* m_data;
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Foo(void* data) : m_data(data) {}
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};
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Foo aFunction() {
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return malloc(10);
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}
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// Assume that functions which take a function pointer can free memory even if
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// they are defined in system headers and take the const pointer to the
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// allocated memory. (radar://11160612)
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// Test default parameter.
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int const_ptr_and_callback_def_param(int, const char*, int n, void(*)(void*) = 0);
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void r11160612_3() {
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char *x = (char*)malloc(12);
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const_ptr_and_callback_def_param(0, x, 12);
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}
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// Test member function pointer.
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struct CanFreeMemory {
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static void myFree(void*);
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};
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//This is handled because we look at the type of the parameter(not argument).
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void r11160612_3(CanFreeMemory* p) {
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char *x = (char*)malloc(12);
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const_ptr_and_callback_def_param(0, x, 12, p->myFree);
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}
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namespace PR13751 {
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class OwningVector {
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void **storage;
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size_t length;
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public:
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OwningVector();
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~OwningVector();
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void push_back(void *Item) {
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storage[length++] = Item;
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}
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};
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void testDestructors() {
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OwningVector v;
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v.push_back(malloc(4));
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// no leak warning; freed in destructor
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}
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}
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