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(STACK_SIZE): New macro. On x86, use 2*SIGSTKSZ, because the default-size

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of 8KB is just too small to do anything reasonable.
(main): Use STACK_SIZE instead of SIGSTKSZ.

(Logical change 1.81)
This commit is contained in:
hp.com!davidm 2003-04-21 23:14:14 +00:00
parent 508f65f8b9
commit ade160f6a1
1 changed files with 8 additions and 2 deletions
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10
tests/bt.c
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@ -42,6 +42,12 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include <unistd.h>
#include <libunwind.h>
#if UNW_TARGET_X86
# define STACK_SIZE (2*SIGSTKSZ) /* On x86, SIGSTKSZ is too small */
#else
# define STACK_SIZE SIGSTKSZ
#endif
#define panic(args...) \
{ fprintf (stderr, args); exit (-1); }
@ -154,10 +160,10 @@ main (int argc, char **argv)
kill (getpid (), SIGTERM);
printf ("Backtrace across signal handler on alternate stack:\n");
stk.ss_sp = malloc (SIGSTKSZ);
stk.ss_sp = malloc (STACK_SIZE);
if (!stk.ss_sp)
panic ("failed to allocate SIGSTKSZ (%u) bytes\n", SIGSTKSZ);
stk.ss_size = SIGSTKSZ;
stk.ss_size = STACK_SIZE;
stk.ss_flags = 0;
if (sigaltstack (&stk, NULL) < 0)
panic ("sigaltstack: %s\n", strerror (errno));