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1 #include <stdlib.h>
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2 #include <stdio.h>
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3 #include <stddef.h>
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4
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5 #include "libgccjit.h"
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6
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7 #include "harness.h"
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8
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9 #define BUFFER_SIZE (1024)
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10
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11 char test_buffer[1024];
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12
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13 void
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14 create_code (gcc_jit_context *ctxt, void *user_data)
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15 {
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16 /* Let's try to inject the equivalent of:
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17 void test_of_array_as_pointer (const char *name)
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18 {
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19 snprintf (test_buffer, sizeof (test_buffer),
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20 "hello %s", name);
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21 }
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22 */
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23 gcc_jit_type *void_type =
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24 gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_VOID);
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25 gcc_jit_type *const_char_ptr_type =
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26 gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_CONST_CHAR_PTR);
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27 gcc_jit_type *char_type =
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28 gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_CHAR);
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29 gcc_jit_type *char_ptr_type =
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30 gcc_jit_type_get_pointer (char_type);
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31 gcc_jit_type *int_type =
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32 gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_INT);
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33 gcc_jit_type *size_t_type =
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34 gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_SIZE_T);
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35 gcc_jit_type *buf_type =
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36 gcc_jit_context_new_array_type (ctxt, NULL, char_type, BUFFER_SIZE);
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37
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38 /* extern int snprintf(char *str, size_t size, const char *format, ...); */
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39 gcc_jit_param *param_s =
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40 gcc_jit_context_new_param (ctxt, NULL, char_ptr_type, "s");
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41 gcc_jit_param *param_n =
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42 gcc_jit_context_new_param (ctxt, NULL, size_t_type, "n");
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43 gcc_jit_param *param_format =
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44 gcc_jit_context_new_param (ctxt, NULL, const_char_ptr_type, "format");
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45 gcc_jit_param *snprintf_params[3] = {param_s, param_n, param_format};
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46 gcc_jit_function *snprintf =
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47 gcc_jit_context_new_function (ctxt, NULL,
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48 GCC_JIT_FUNCTION_IMPORTED,
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49 int_type,
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50 "snprintf",
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51 3, snprintf_params,
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52 1);
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53
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54 gcc_jit_param *param_name =
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55 gcc_jit_context_new_param (ctxt, NULL, const_char_ptr_type, "name");
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56 gcc_jit_function *test_fn =
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57 gcc_jit_context_new_function (ctxt, NULL,
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58 GCC_JIT_FUNCTION_EXPORTED,
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59 void_type,
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60 "test_of_array_as_pointer",
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61 1, ¶m_name,
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62 0);
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63
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64 gcc_jit_lvalue *buffer =
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65 gcc_jit_context_new_global (ctxt, NULL,
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66 GCC_JIT_GLOBAL_IMPORTED,
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67 buf_type,
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68 "test_buffer");
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69
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70 gcc_jit_block *block = gcc_jit_function_new_block(test_fn, "entry");
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71
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72 /* snprintf(buffer, sizeof(buffer), "hello %s", name); */
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73 gcc_jit_rvalue *args[4];
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74 args[0] = gcc_jit_context_new_cast (
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75 ctxt, NULL,
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76 /* Here's the difference with test-array-as-pointer.c: */
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77 gcc_jit_lvalue_as_rvalue (buffer),
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78 char_ptr_type);
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79 args[1] = gcc_jit_context_new_rvalue_from_int (ctxt,
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80 size_t_type,
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81 BUFFER_SIZE);
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82 args[2] = gcc_jit_context_new_string_literal (ctxt, "hello %s");
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83 args[3] = gcc_jit_param_as_rvalue (param_name);
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84
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85 gcc_jit_block_add_eval (
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86 block, NULL,
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87 gcc_jit_context_new_call (ctxt, NULL, snprintf, 4, args));
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88 gcc_jit_block_end_with_void_return (block, NULL);
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89 }
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90
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91 void
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92 verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
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93 {
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94 CHECK_VALUE (result, NULL);
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95
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96 /* Verify that the correct error message was emitted. */
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97 CHECK_STRING_VALUE (gcc_jit_context_get_first_error (ctxt),
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98 "gcc_jit_context_new_cast:"
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99 " cannot cast test_buffer"
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100 " from type: char[1024]"
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101 " to type: char *");
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102 }
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