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75281907d3
Some of the unit test code was bringing an extern function prototype into scoe in a function body. The idiomatic and expected way to do this is by using a header file and not adhering to the idiom not only increases the cognitive load of the reader but tgriggers warning from static analysis tools. This change just does it the right way instead. No functional change.
122 lines
3.8 KiB
C
122 lines
3.8 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2004 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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#include "compiler.h"
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#include <signal.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include "ident.h"
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pid_t self;
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int global[64];
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int
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func (int arg)
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{
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int sum = 0, i, max, arr[1024];
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if (arg == 0)
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{
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sum = global[2];
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sum += sum + sum * getppid ();
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return sum;
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}
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else
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{
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max = arg;
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if (max >= 64)
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max = 64;
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for (i = 0; i < max; ++i)
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arr[i] = func (arg - 1);
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for (i = 0; i < max; ++i)
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if (arr[i] > 16)
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sum += arr[i];
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else
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sum -= arr[i];
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}
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return sum;
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}
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int
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bar (int v)
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{
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int arr[1] = { v };
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uintptr_t r;
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/* This is a vain attempt to use up lots of registers to force
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the frame-chain info to be saved on the memory stack on ia64.
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It happens to work with gcc v3.3.4 and gcc v3.4.1 but perhaps
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not with any other compiler. */
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r = (uintptr_t) malloc(f (arr[0])
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
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+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + f (v))
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))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
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)))))))))))))))))))))))))))))))))))))))))))))))))))))));
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if (r < 2)
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v = r;
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kill (self, SIGUSR1); /* tell test-ptrace to start single-stepping */
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v = func (v);
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kill (self, SIGUSR2); /* tell test-ptrace to stop single-stepping */
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return v;
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}
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int
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main (int argc, char **argv UNUSED)
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{
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int val = argc;
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signal (SIGUSR1, SIG_IGN);
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signal (SIGUSR2, SIG_IGN);
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self = getpid ();
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printf ("sum = %d\n", bar (val));
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return 0;
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}
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