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Add stack overflow test

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* libguile/throw.c (throw_without_pre_unwind): Newline after the
  unwind-only warning.

* test-suite/standalone/Makefile.am:
* test-suite/standalone/test-stack-overflow: New test to handle
  mmap/malloc failure.
This commit is contained in:
Andy Wingo 2014-03-15 18:56:18 +01:00
parent f764e2590f
commit 4189a5c0bd
3 changed files with 43 additions and 2 deletions
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2
libguile/throw.c
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@ -185,7 +185,7 @@ throw_without_pre_unwind (SCM tag, SCM args)
if (scm_is_true (scm_c_vector_ref (eh, 3)))
fprintf (stderr, "\nWarning: unwind-only exception, perhaps due to "
"stack overflow; not running pre-unwind handlers.");
"stack overflow; not running pre-unwind handlers.\n");
prompt_tag = scm_c_vector_ref (eh, 2);
if (scm_is_true (prompt_tag))

5
test-suite/standalone/Makefile.am
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@ -1,7 +1,7 @@
## Process this file with automake to produce Makefile.in.
##
## Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
## 2011, 2012, 2013 Free Software Foundation, Inc.
## 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
##
## This file is part of GUILE.
##
@ -264,4 +264,7 @@ test_smob_mark_LDADD = $(LIBGUILE_LDADD)
check_PROGRAMS += test-smob-mark
TESTS += test-smob-mark
check_SCRIPTS += test-stack-overflow
TESTS += test-stack-overflow
EXTRA_DIST += ${check_SCRIPTS}

38
test-suite/standalone/test-stack-overflow Executable file
View file

@ -0,0 +1,38 @@
#!/bin/sh
exec guile -q -s "$0" "$@"
!#
(unless (defined? 'setrlimit)
;; Without an rlimit, this test can take down your system, as it
;; consumes all of your memory in stack space. That doesn't seem like
;; something we should run as part of an automated test suite.
(exit 0))
;; 100 MB.
(define *limit* (* 100 1024 1024))
(call-with-values (lambda () (getrlimit 'as))
(lambda (soft hard)
(unless (and soft (< soft *limit*))
(setrlimit 'as (if hard (min *limit* hard) *limit*) hard))))
(define (test)
(catch 'stack-overflow
(lambda ()
(let lp ()
(lp)
(error "should not be reached")))
(lambda _
#t)))
;; Run the test a few times. The stack will only be enlarged and
;; relocated on the first one.
(test)
(test)
(test)
(test)
(test)
;; Local Variables:
;; mode: scheme
;; End: