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1 #include <stdlib.h>
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2 #include <stdio.h>
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3
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4 #include "libgccjit.h"
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5
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6 #include "harness.h"
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7
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8 struct foo
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9 {
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10 int x;
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11 int y;
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12 };
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13
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14 void
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15 create_code (gcc_jit_context *ctxt, void *user_data)
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16 {
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17 /* Let's try to inject the equivalent of:
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18 void
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19 test_bogus_dereference ()
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20 {
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21 struct foo tmp;
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22 tmp->x = tmp->y;
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23 }
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24 i.e. where tmp is *not* a pointer.
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25 */
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26 gcc_jit_type *void_type =
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27 gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_VOID);
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28 gcc_jit_type *int_type =
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29 gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_INT);
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30
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31 /* Map "struct foo". */
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32 gcc_jit_field *x =
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33 gcc_jit_context_new_field (ctxt,
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34 NULL,
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35 int_type,
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36 "x");
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37 gcc_jit_field *y =
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38 gcc_jit_context_new_field (ctxt,
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39 NULL,
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40 int_type,
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41 "y");
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42 gcc_jit_field *foo_fields[] = {x, y};
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43 gcc_jit_struct *struct_foo =
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44 gcc_jit_context_new_struct_type (ctxt, NULL, "foo", 2, foo_fields);
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45
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46 /* Build the test function. */
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47 gcc_jit_function *test_fn =
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48 gcc_jit_context_new_function (ctxt, NULL,
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49 GCC_JIT_FUNCTION_EXPORTED,
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50 void_type,
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51 "test_bogus_dereference",
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52 0, NULL,
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53 0);
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54 gcc_jit_lvalue *tmp =
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55 gcc_jit_function_new_local (test_fn, NULL,
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56 gcc_jit_struct_as_type (struct_foo),
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57 "tmp");
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58
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59 gcc_jit_block *block = gcc_jit_function_new_block (test_fn, NULL);
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60
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61 /* Erroneous: tmp->x = ... */
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62 gcc_jit_lvalue *lvalue =
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63 gcc_jit_rvalue_dereference_field (
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64 gcc_jit_lvalue_as_rvalue (tmp),
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65 NULL,
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66 x);
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67
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68 /* Erroneous: ... = tmp->y; */
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69 gcc_jit_rvalue *rvalue =
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70 gcc_jit_lvalue_as_rvalue (
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71 gcc_jit_rvalue_dereference_field (
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72 gcc_jit_lvalue_as_rvalue (tmp),
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73 NULL,
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74 y));
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75
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76 gcc_jit_block_add_assignment (
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77 block,
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78 NULL,
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79 lvalue, rvalue);
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80
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81 gcc_jit_block_end_with_void_return (block, NULL);
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82 }
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83
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84 void
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85 verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
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86 {
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87 CHECK_VALUE (result, NULL);
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88
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89 /* Verify that the correct error message was emitted. */
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90 CHECK_STRING_VALUE (gcc_jit_context_get_first_error (ctxt),
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91 ("gcc_jit_rvalue_dereference_field:"
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92 " dereference of non-pointer tmp (type: struct foo)"
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93 " when accessing ->x"));
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94 }
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95
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