53ae0aa9c6
When running test-case gdb.reverse/until-reverse.exp or
gdb.reverse/until-precsave.exp with gcc-10, we run into a Wunused-result
warning:
...
gdb compile failed, gdb.reverse/until-reverse.c: In function 'main':
gdb.reverse/until-reverse.c:40:14: warning: ignoring return value of \
'malloc' declared with attribute 'warn_unused_result' [-Wunused-result]
40 | (void) malloc (1);
| ^~~~~~~~~~
...
Fix this by using the result of malloc as argument to a free call.
Tested on x86_64-linux.
gdb/testsuite/ChangeLog:
2020-05-01 Tom de Vries <tdevries@suse.de>
* gdb.reverse/until-reverse.c (main): Fix Wunused-result warning.
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2008-2020 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <stdlib.h>
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extern int marker1 (void);
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extern int marker2 (int a);
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extern void marker3 (char *a, char *b);
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extern void marker4 (long d);
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/*
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* This simple classical example of recursion is useful for
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* testing stack backtraces and such.
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*/
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int factorial(int);
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int
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main (int argc, char **argv, char **envp)
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{
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if (argc == 12345)
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{
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/* We're used by a test that requires malloc, so make sure it is
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in the executable. */
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void *p = malloc (1);
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free (p);
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return 1;
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}
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factorial (atoi ("6")); /* set breakpoint 1 here */
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/* set breakpoint 12 here */
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marker1 (); /* set breakpoint 11 here */
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marker2 (43); /* set breakpoint 20 here */
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marker3 ("stack", "trace"); /* set breakpoint 21 here */
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marker4 (177601976L);
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argc = (argc == 12345); /* This is silly, but we can step off of it */ /* set breakpoint 2 here */
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return argc; /* set breakpoint 10 here */
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} /* set breakpoint 10a here */
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int factorial (int value)
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{
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if (value > 1) { /* set breakpoint 7 here */
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value *= factorial (value - 1);
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}
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return (value); /* set breakpoint 19 here */
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}
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int multi_line_if_conditional (int a, int b, int c)
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{
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if (a /* set breakpoint 3 here */
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&& b
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&& c)
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return 0;
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else
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return 1;
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}
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int multi_line_while_conditional (int a, int b, int c)
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{
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while (a /* set breakpoint 4 here */
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&& b
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&& c)
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{
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a--, b--, c--;
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}
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return 0;
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}
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