| 1 | /* Test CET property note parser for [BZ #23467]. |
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| 2 | Copyright (C) 2018-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library 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 GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <stdlib.h> |
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| 20 | #include <stdio.h> |
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| 21 | #include <string.h> |
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| 22 | #include <signal.h> |
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| 23 | #include <support/check.h> |
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| 24 | |
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| 25 | extern void bar (void); |
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| 26 | |
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| 27 | void |
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| 28 | __attribute__ ((noclone, noinline)) |
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| 29 | test (void (*func_p) (void)) |
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| 30 | { |
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| 31 | func_p (); |
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| 32 | } |
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| 33 | |
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| 34 | /* bar contains an IBT violation if it is called indirectly via a |
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| 35 | function pointer. On IBT machines, it should lead to segfault |
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| 36 | unless IBT is disabled by error. */ |
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| 37 | |
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| 38 | static void |
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| 39 | sig_handler (int signo) |
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| 40 | { |
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| 41 | exit (EXIT_SUCCESS); |
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| 42 | } |
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| 43 | |
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| 44 | static int |
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| 45 | do_test (void) |
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| 46 | { |
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| 47 | char buf[4]; |
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| 48 | |
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| 49 | if (scanf (format: "%3s" , buf) != 1) |
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| 50 | FAIL_UNSUPPORTED ("IBT not supported" ); |
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| 51 | |
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| 52 | if (strcmp (buf, "IBT" ) != 0) |
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| 53 | FAIL_UNSUPPORTED ("IBT not supported" ); |
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| 54 | |
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| 55 | TEST_VERIFY_EXIT (signal (SIGSEGV, &sig_handler) != SIG_ERR); |
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| 56 | |
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| 57 | /* Call bar via a function pointer to force an IBT violation. */ |
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| 58 | test (func_p: bar); |
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| 59 | |
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| 60 | return EXIT_FAILURE; |
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| 61 | } |
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| 62 | |
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| 63 | #include <support/test-driver.c> |
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| 64 | |
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