mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-25 16:47:38 +01:00
8203c955c8
test-varargs is checking how `backtrace()' provided by the system behaves when varargs are used. Let's make the test more useful by changing it to test the `backtrace()' provided by libunwind. Change the testcase to return 0/1 for success/failure, and add it to the set of checks, so that it gets run on `make check'. Also call `unw_backtrace()' explicitly so that we do not need to bother with `execinfo.h' and `backtrace()' prototype.
81 lines
1.2 KiB
C
81 lines
1.2 KiB
C
#include <libunwind.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
int ok;
|
|
int verbose;
|
|
|
|
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 3)
|
|
void a (int, ...) __attribute__((noinline, optimize(0)));
|
|
void b (void) __attribute__((noinline, optimize(0)));
|
|
void c (void) __attribute__((noinline, optimize(0)));
|
|
#endif
|
|
|
|
void
|
|
b (void)
|
|
{
|
|
void *v[20];
|
|
int i, n;
|
|
|
|
n = unw_backtrace(v, 20);
|
|
|
|
/* Check that the number of addresses given by unw_backtrace() looks
|
|
* reasonable. If the compiler inlined everything, then this check will also
|
|
* break. */
|
|
if (n >= 7)
|
|
ok = 1;
|
|
|
|
if (verbose)
|
|
for (i = 0; i < n; ++i)
|
|
printf ("[%d] %p\n", i, v[i]);
|
|
}
|
|
|
|
void
|
|
c (void)
|
|
{
|
|
b ();
|
|
}
|
|
|
|
void
|
|
a (int d, ...)
|
|
{
|
|
switch (d)
|
|
{
|
|
case 5:
|
|
a (4, 2,4);
|
|
break;
|
|
case 4:
|
|
a (3, 1,3,5);
|
|
break;
|
|
case 3:
|
|
a (2, 11, 13, 17, 23);
|
|
break;
|
|
case 2:
|
|
a (1);
|
|
break;
|
|
case 1:
|
|
c ();
|
|
}
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv __attribute__((unused)))
|
|
{
|
|
if (argc > 1)
|
|
verbose = 1;
|
|
|
|
a (5, 3, 4, 5, 6);
|
|
|
|
if (!ok)
|
|
{
|
|
fprintf (stderr, "FAILURE: expected deeper backtrace.\n");
|
|
return 1;
|
|
}
|
|
|
|
if (verbose)
|
|
printf ("SUCCESS.\n");
|
|
|
|
return 0;
|
|
}
|