diff options
Diffstat (limited to 'REORG.TODO/debug/tst-backtrace2.c')
-rw-r--r-- | REORG.TODO/debug/tst-backtrace2.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/REORG.TODO/debug/tst-backtrace2.c b/REORG.TODO/debug/tst-backtrace2.c new file mode 100644 index 0000000000..86f88dee82 --- /dev/null +++ b/REORG.TODO/debug/tst-backtrace2.c @@ -0,0 +1,103 @@ +/* Test backtrace and backtrace_symbols. + Copyright (C) 2009-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <execinfo.h> +#include <search.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "tst-backtrace.h" + +/* The backtrace should include at least f1, f2, f3, and do_test. */ +#define NUM_FUNCTIONS 4 + +NO_INLINE void +fn1 (void) +{ + void *addresses[NUM_FUNCTIONS]; + char **symbols; + int n; + int i; + + /* Get the backtrace addresses. */ + n = backtrace (addresses, sizeof (addresses) / sizeof (addresses[0])); + printf ("Obtained backtrace with %d functions\n", n); + /* Check that there are at least four functions. */ + if (n < NUM_FUNCTIONS) + { + FAIL (); + return; + } + /* Convert them to symbols. */ + symbols = backtrace_symbols (addresses, n); + /* Check that symbols were obtained. */ + if (symbols == NULL) + { + FAIL (); + return; + } + for (i = 0; i < n; ++i) + printf ("Function %d: %s\n", i, symbols[i]); + /* Check that the function names obtained are accurate. */ + if (!match (symbols[0], "fn1")) + { + FAIL (); + return; + } + /* Symbol names are not available for static functions, so we do not + check f2. */ + if (!match (symbols[2], "fn3")) + { + FAIL (); + return; + } + /* Symbol names are not available for static functions, so we do not + check do_test. */ +} + +NO_INLINE int +fn2 (void) +{ + fn1 (); + /* Prevent tail calls. */ + return x; +} + +NO_INLINE int +fn3 (void) +{ + fn2(); + /* Prevent tail calls. */ + return x; +} + +NO_INLINE int +do_test (void) +{ + /* Test BZ #18084. */ + void *buffer[1]; + + if (backtrace (buffer, 0) != 0) + FAIL (); + + fn3 (); + return ret; +} + +#include <support/test-driver.c> |