llvm-project/clang/test/Sema/warn-free-nonheap-object.c

45 lines
994 B
C

// RUN: %clang_cc1 -Wfree-nonheap-object -fsyntax-only -verify %s
typedef __SIZE_TYPE__ size_t;
void *malloc(size_t);
void free(void *);
struct S {
int I;
char *P;
};
int GI;
void test() {
{
free(&GI); // expected-warning {{attempt to call free on non-heap object 'GI'}}
}
{
static int SI = 0;
free(&SI); // expected-warning {{attempt to call free on non-heap object 'SI'}}
}
{
int I = 0;
free(&I); // expected-warning {{attempt to call free on non-heap object 'I'}}
}
{
int I = 0;
int *P = &I;
free(P); // FIXME diagnosing this would require control flow analysis.
}
{
void *P = malloc(8);
free(P);
}
{
int A[] = {0, 1, 2, 3};
free(A); // expected-warning {{attempt to call free on non-heap object 'A'}}
free(&A); // expected-warning {{attempt to call free on non-heap object 'A'}}
}
{
struct S s;
free(&s.I); // expected-warning {{attempt to call free on non-heap object 'I'}}
free(s.P);
}
}