6dc188d4eb
Warns about calls to functions decorated with attribute `alloc_size` that specify insufficient size for the type they are cast to. Matches the behavior of the GCC option of the same name. Closes #138973 --------- Co-authored-by: Vladimir Vuksanovic <vvuksano@cisco.com>
40 lines
1005 B
C++
40 lines
1005 B
C++
// RUN: %clang_analyze_cc1 -Wno-alloc-size -analyzer-checker=core,unix.Malloc,unix.MismatchedDeallocator -std=c++11 -verify %s
|
|
// expected-no-diagnostics
|
|
|
|
typedef __typeof(sizeof(int)) size_t;
|
|
void *malloc(size_t);
|
|
void free(void *);
|
|
|
|
//--------------------------------------------------------------------
|
|
// Check that unix.Malloc + unix.MismatchedDeallocator does not enable
|
|
// warnings produced by the alpha.cplusplus.NewDelete checker.
|
|
//--------------------------------------------------------------------
|
|
void testNewDeleteNoWarn() {
|
|
int i;
|
|
delete &i; // no-warning
|
|
|
|
int *p1 = new int;
|
|
delete ++p1; // no-warning
|
|
|
|
int *p2 = new int;
|
|
delete p2;
|
|
delete p2; // no-warning
|
|
|
|
int *p3 = new int; // no-warning
|
|
|
|
int *p4 = new int;
|
|
delete p4;
|
|
int j = *p4; // no-warning
|
|
}
|
|
|
|
void testUseZeroAllocNoWarn() {
|
|
int *p1 = (int *)operator new(0);
|
|
*p1 = 1; // no-warning
|
|
|
|
int *p2 = (int *)operator new[](0);
|
|
p2[0] = 1; // no-warning
|
|
|
|
int *p3 = new int[0];
|
|
p3[0] = 1; // no-warning
|
|
}
|