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* stdlib/tst-setcontext.c (main): If makecontext does nothing,

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presume it's the stub and bail without error.
This commit is contained in:
Roland McGrath
2002-08-31 03:21:56 +00:00
parent 8fea756af2
commit 37076fcc4c
2 changed files with 16 additions and 2 deletions
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15
stdlib/tst-setcontext.c
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@@ -1,4 +1,4 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
/* Copyright (C) 2001,02 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -19,6 +19,7 @@
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ucontext.h>
static ucontext_t ctx[3];
@@ -104,7 +105,17 @@ main (void)
ctx[1].uc_stack.ss_sp = st1;
ctx[1].uc_stack.ss_size = sizeof st1;
ctx[1].uc_link = &ctx[0];
makecontext (&ctx[1], (void (*) (void)) f1, 4, 1, 2, 3, -4);
{
ucontext_t tempctx = ctx[1];
makecontext (&ctx[1], (void (*) (void)) f1, 4, 1, 2, 3, -4);
/* Without this check, a stub makecontext can make us spin forever. */
if (memcmp (&tempctx, &ctx[1], sizeof ctx[1]) == 0)
{
puts ("makecontext was a no-op, presuming not implemented");
return 0;
}
}
if (getcontext (&ctx[2]) != 0)
{