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1 // Copyright (C) 2012-2020 Free Software Foundation, Inc.
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111
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2 //
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3 // This file is part of GCC.
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4 //
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5 // GCC is free software; you can redistribute it and/or modify
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6 // it under the terms of the GNU General Public License as published by
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7 // the Free Software Foundation; either version 3, or (at your option)
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8 // any later version.
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9
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10 // GCC is distributed in the hope that it will be useful,
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11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 // GNU General Public License for more details.
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14
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15 // Under Section 7 of GPL version 3, you are granted additional
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16 // permissions described in the GCC Runtime Library Exception, version
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17 // 3.1, as published by the Free Software Foundation.
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18
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19 // You should have received a copy of the GNU General Public License and
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20 // a copy of the GCC Runtime Library Exception along with this program;
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21 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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22 // <http://www.gnu.org/licenses/>.
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23
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24 #ifndef _VTV_FAIL_H
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25 #define _VTV_FAIL_H 1
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26
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27 /* __vtv_really_fail prints a backtrace and a memory dump, then calls
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28 abort. It is here for programmers to call, presumably from
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29 __vtv_verify_fail, if they choose to overwrite the standard
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30 __vtv_verify_fail with one of their own. Programmers should NOT
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31 attempt to rewrite __vtv_really_fail. */
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32
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33 extern void
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34 __vtv_really_fail (const char *fail_msg)
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35 __attribute__ ((visibility ("default"), noreturn, nothrow));
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36
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37 /* __vtv_verify_fail is the function that gets called if the vtable
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38 verification code discovers a vtable pointer that it cannot verify
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39 as valid. Normally __vtv_verify_fail calls __vtv_really_fail.
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40 However programmers can write and link in their own version of
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41 __vtv_verify_fail, if they wish to do some kind of secondary
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42 verification, for example. The main verification code assumes that
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43 IF __vtv_verify_fail returns, then some kind of secondary
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44 verification was done AND that the secondary verification succeeded,
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45 i.e. that the vtable pointer is actually valid and ok to use. If
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46 the secondary verification fails, then __vtv_verify_fail should not
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47 return. */
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48
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49 extern void
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50 __vtv_verify_fail (void **data_set_ptr, const void *vtbl_pointer)
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51 __attribute__((visibility ("default"), nothrow));
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52
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53 extern void
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54 __vtv_verify_fail_debug (void **data_set_ptr, const void *vtbl_pointer,
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55 const char *debug_msg)
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56 __attribute__((visibility ("default"), nothrow));
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57
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58 #endif /* _VTV_FAIL_H */
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