llvm-project/clang/test/Sema/warn-free-nonheap-object.c
Aaron Ballman 22db4824b9 Use functions with prototypes when appropriate; NFC
A significant number of our tests in C accidentally use functions
without prototypes. This patch converts the function signatures to have
a prototype for the situations where the test is not specific to K&R C
declarations. e.g.,

  void func();

becomes

  void func(void);

This is the third batch of tests being updated (there are a significant
number of other tests left to be updated).
2022-02-07 09:25:01 -05:00

45 lines
998 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(void) {
{
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);
}
}