From c5a0835dea5cfb00153b38ecbe14f067c586ccdb Mon Sep 17 00:00:00 2001 From: "Kaveh R. Ghazi" Date: Tue, 31 Oct 2000 21:30:22 +0000 Subject: [PATCH] * gcc.c-torture/execute/va-arg-21.c: New test. From-SVN: r37167 --- gcc/testsuite/ChangeLog | 4 ++ .../gcc.c-torture/execute/va-arg-21.c | 48 +++++++++++++++++++ 2 files changed, 52 insertions(+) create mode 100644 gcc/testsuite/gcc.c-torture/execute/va-arg-21.c diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 0d714d8d2c3..838db076001 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2000-10-31 Kaveh R. Ghazi + + * gcc.c-torture/execute/va-arg-21.c: New test. + 2000-10-31 Joseph S. Myers * gcc.dg/c99-complex-2.c: New test. diff --git a/gcc/testsuite/gcc.c-torture/execute/va-arg-21.c b/gcc/testsuite/gcc.c-torture/execute/va-arg-21.c new file mode 100644 index 00000000000..8c9802a372d --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/va-arg-21.c @@ -0,0 +1,48 @@ +/* Copyright (C) 2000 Free Software Foundation. + + If the argument to va_end() has side effects, test whether side + effects from that argument are honored. + + Written by Kaveh R. Ghazi, 10/31/2000. */ + +#include +#include +#include + +#ifndef __GNUC__ +#define __attribute__(x) +#endif + +static void __attribute__ ((__format__ (__printf__, 1, 2))) +doit (const char *s, ...) +{ + va_list *ap_array[3], **ap_ptr = ap_array; + + ap_array[0] = malloc (sizeof(va_list)); + ap_array[1] = NULL; + ap_array[2] = malloc (sizeof(va_list)); + + va_start (*ap_array[0], s); + vprintf (s, **ap_ptr); + /* Increment the va_list pointer once. */ + va_end (**ap_ptr++); + + /* Increment the va_list pointer a second time. */ + ap_ptr++; + + va_start (*ap_array[2], s); + /* If we failed to increment ap_ptr twice, then the parameter passed + in here will dereference NULL and should cause a crash. */ + vprintf (s, **ap_ptr); + va_end (**ap_ptr); + + /* Just in case, If *ap_ptr is NULL abort anyway. */ + if (*ap_ptr == 0) + abort(); +} + +int main() +{ + doit ("%s", "hello world\n"); + return 0; +} -- 2.30.2