Viewing file:  test-trap.c (1.4 KB) -rw-r--r--
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#include <stdlib.h>
#include <stdio.h>
#include <stddef.h>
#include "libgccjit.h"
#include "harness.h"
void
create_code (gcc_jit_context *ctxt, void *user_data)
{
/* Let's try to inject the equivalent of:
void
test_trap (void)
{
*((int *)0) = 42;
}
*/
gcc_jit_type *void_type
= gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_VOID);
gcc_jit_type *int_type
= gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_INT);
gcc_jit_type *int_ptr_type
= gcc_jit_type_get_pointer (int_type);
/* Build the test_fn. */
gcc_jit_function *func
= gcc_jit_context_new_function (ctxt, NULL,
GCC_JIT_FUNCTION_EXPORTED,
void_type,
"test_trap",
0, NULL,
0);
gcc_jit_block *initial = gcc_jit_function_new_block (func, "initial");
gcc_jit_rvalue *null_ptr
= gcc_jit_context_new_rvalue_from_ptr (ctxt, int_ptr_type, NULL);
/* "*((int *)0) = 42;" */
gcc_jit_block_add_assignment (
initial, NULL,
gcc_jit_rvalue_dereference (null_ptr, NULL),
gcc_jit_context_new_rvalue_from_int (ctxt, int_type, 42));
gcc_jit_block_end_with_void_return (initial, NULL);
}
void
verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
{
typedef void (*fn_type) (void);
CHECK_NON_NULL (result);
fn_type test_array =
(fn_type)gcc_jit_result_get_code (result, "test_trap");
CHECK_NON_NULL (test_array);
/* Don't attempt to call it. */
}
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