[331] | 1 | #include "mruby.h"
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| 2 | #include "mruby/array.h"
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| 3 | #include "mruby/class.h"
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| 4 | #include "mruby/hash.h"
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| 5 | #include "mruby/numeric.h"
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| 6 | #include "mruby/string.h"
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| 7 | #include "mruby/variable.h"
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| 8 | #include <errno.h>
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| 9 | #include <stdio.h>
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| 10 | #include <string.h>
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| 11 |
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| 12 | #if MRUBY_RELEASE_NO < 10000
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| 13 | static struct RClass *
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| 14 | mrb_module_get(mrb_state *mrb, const char *name)
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| 15 | {
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| 16 | return mrb_class_get(mrb, name);
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| 17 | }
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| 18 | #endif
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| 19 |
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| 20 | static mrb_value
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| 21 | mrb_sce_init(mrb_state *mrb, mrb_value self)
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| 22 | {
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| 23 | mrb_value c, e2c, m, str;
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| 24 | mrb_int n;
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| 25 | int argc, no_errno = 0;
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| 26 | char buf[20];
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| 27 |
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| 28 | argc = mrb_get_args(mrb, "o|i", &m, &n);
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| 29 | if (argc == 1) {
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| 30 | if (mrb_type(m) == MRB_TT_FIXNUM) {
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| 31 | n = mrb_fixnum(m);
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| 32 | m = mrb_nil_value();
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| 33 | } else {
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| 34 | no_errno = 1;
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| 35 | }
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| 36 | }
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| 37 | if (!no_errno) {
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| 38 | e2c = mrb_const_get(mrb, mrb_obj_value(mrb_module_get(mrb, "Errno")), mrb_intern_lit(mrb, "Errno2class"));
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| 39 | c = mrb_hash_fetch(mrb, e2c, mrb_fixnum_value(n), mrb_nil_value());
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| 40 | if (!mrb_nil_p(c)) {
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| 41 | mrb_basic_ptr(self)->c = mrb_class_ptr(c);
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| 42 | str = mrb_str_new_cstr(mrb, strerror(n));
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| 43 | } else {
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| 44 | mrb_iv_set(mrb, self, mrb_intern_lit(mrb, "errno"), mrb_fixnum_value(n));
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| 45 | str = mrb_str_new_cstr(mrb, "Unknown error: ");
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| 46 | snprintf(buf, sizeof(buf), "%d", (int)n);
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| 47 | mrb_str_cat2(mrb, str, buf);
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| 48 | }
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| 49 | } else {
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| 50 | str = mrb_str_new_cstr(mrb, "unknown error");
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| 51 | }
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| 52 | if (!mrb_nil_p(m)) {
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| 53 | mrb_str_cat2(mrb, str, " - ");
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| 54 | mrb_str_append(mrb, str, m);
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| 55 | }
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| 56 | mrb_iv_set(mrb, self, mrb_intern_lit(mrb, "mesg"), str);
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| 57 | return self;
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| 58 | }
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| 59 |
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| 60 | static mrb_value
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| 61 | mrb_sce_errno(mrb_state *mrb, mrb_value self)
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| 62 | {
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| 63 | struct RClass *c;
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| 64 | mrb_sym sym;
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| 65 |
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| 66 | c = mrb_class(mrb, self);
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| 67 | sym = mrb_intern_lit(mrb, "Errno");
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| 68 | #if MRUBY_RELEASE_NO < 10000
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| 69 | if (mrb_const_defined_at(mrb, c, sym)) {
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| 70 | #else
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| 71 | if (mrb_const_defined_at(mrb, mrb_obj_value(c), sym)) {
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| 72 | #endif
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| 73 | return mrb_const_get(mrb, mrb_obj_value(c), sym);
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| 74 | } else {
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| 75 | sym = mrb_intern_lit(mrb, "errno");
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| 76 | return mrb_attr_get(mrb, self, sym);
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| 77 | }
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| 78 | }
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| 79 |
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| 80 | static mrb_value
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| 81 | mrb_sce_to_s(mrb_state *mrb, mrb_value self)
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| 82 | {
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| 83 | return mrb_attr_get(mrb, self, mrb_intern_lit(mrb, "mesg"));
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| 84 | }
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| 85 |
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| 86 | static mrb_value
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| 87 | mrb_sce_sys_fail(mrb_state *mrb, mrb_value cls)
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| 88 | {
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| 89 | struct RClass *cl, *sce;
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| 90 | mrb_value e, msg;
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| 91 | mrb_int no;
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| 92 | int argc;
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| 93 | char name[8];
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| 94 |
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| 95 | sce = mrb_class_get(mrb, "SystemCallError");
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| 96 | argc = mrb_get_args(mrb, "i|S", &no, &msg);
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| 97 | if (argc == 1) {
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| 98 | e = mrb_funcall(mrb, mrb_obj_value(sce), "new", 1, mrb_fixnum_value(no));
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| 99 | } else {
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| 100 | e = mrb_funcall(mrb, mrb_obj_value(sce), "new", 2, msg, mrb_fixnum_value(no));
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| 101 | }
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| 102 | if (mrb_obj_class(mrb, e) == sce) {
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| 103 | snprintf(name, sizeof(name), "E%03ld", (long)no);
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| 104 | cl = mrb_define_class_under(mrb, mrb_module_get(mrb, "Errno"), name, sce);
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| 105 | mrb_define_const(mrb, cl, "Errno", mrb_fixnum_value(no));
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| 106 | mrb_basic_ptr(e)->c = cl;
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| 107 | }
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| 108 | mrb_exc_raise(mrb, e);
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| 109 | return mrb_nil_value(); /* NOTREACHED */
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| 110 | }
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| 111 |
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| 112 | static mrb_value
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| 113 | mrb_exxx_init(mrb_state *mrb, mrb_value self)
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| 114 | {
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| 115 | mrb_value m, no, str;
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| 116 |
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| 117 | no = mrb_const_get(mrb, mrb_obj_value(mrb_class(mrb, self)), mrb_intern_lit(mrb, "Errno"));
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| 118 | str = mrb_str_new_cstr(mrb, strerror(mrb_fixnum(no)));
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| 119 |
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| 120 | m = mrb_nil_value();
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| 121 | mrb_get_args(mrb, "|S", &m);
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| 122 | if (!mrb_nil_p(m)) {
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| 123 | mrb_str_cat2(mrb, str, " - ");
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| 124 | mrb_str_append(mrb, str, m);
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| 125 | }
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| 126 | mrb_iv_set(mrb, self, mrb_intern_lit(mrb, "mesg"), str);
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| 127 | return self;
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| 128 | }
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| 129 |
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| 130 | void
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| 131 | mrb_mruby_errno_gem_init(mrb_state *mrb)
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| 132 | {
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| 133 | struct RClass *e, *eno, *sce, *ste;
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| 134 | mrb_value h, noerror;
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| 135 |
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| 136 | ste = mrb_class_get(mrb, "StandardError");
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| 137 |
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| 138 | sce = mrb_define_class(mrb, "SystemCallError", ste);
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| 139 | mrb_define_class_method(mrb, sce, "_sys_fail", mrb_sce_sys_fail, MRB_ARGS_REQ(1));
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| 140 | mrb_define_method(mrb, sce, "errno", mrb_sce_errno, MRB_ARGS_NONE());
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| 141 | mrb_define_method(mrb, sce, "to_s", mrb_sce_to_s, MRB_ARGS_NONE());
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| 142 | mrb_define_method(mrb, sce, "initialize", mrb_sce_init, MRB_ARGS_ARG(1, 1));
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| 143 |
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| 144 | eno = mrb_define_module(mrb, "Errno");
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| 145 | h = mrb_hash_new(mrb);
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| 146 | mrb_define_const(mrb, eno, "Errno2class", h);
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| 147 |
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| 148 | e = mrb_define_class_under(mrb, eno, "NOERROR", sce);
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| 149 | mrb_define_const(mrb, e, "Errno", mrb_fixnum_value(0));
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| 150 | mrb_define_method(mrb, e, "initialize", mrb_exxx_init, MRB_ARGS_OPT(1));
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| 151 | //mrb_define_method(mrb, e, "===", mrb_exxx_cmp, MRB_ARGS_REQ(1));
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| 152 | noerror = mrb_obj_value(e);
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| 153 |
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| 154 | #define itsdefined(SYM) \
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| 155 | do { \
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| 156 | int ai = mrb_gc_arena_save(mrb); \
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| 157 | e = mrb_define_class_under(mrb, eno, #SYM, sce); \
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| 158 | mrb_define_const(mrb, e, "Errno", mrb_fixnum_value(SYM)); \
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| 159 | mrb_define_method(mrb, e, "initialize", mrb_exxx_init, MRB_ARGS_OPT(1)); \
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| 160 | mrb_hash_set(mrb, h, mrb_fixnum_value(SYM), mrb_obj_value(e)); \
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| 161 | mrb_gc_arena_restore(mrb, ai); \
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| 162 | } while (0)
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| 163 |
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| 164 | #define itsnotdefined(SYM) \
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| 165 | do { \
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| 166 | mrb_define_const(mrb, eno, #SYM, noerror); \
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| 167 | } while (0)
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| 168 |
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| 169 | #include "known_errors_def.cstub"
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| 170 | }
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| 171 |
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| 172 | void
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| 173 | mrb_mruby_errno_gem_final(mrb_state *mrb)
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| 174 | {
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| 175 | }
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