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added stack-overflow check in mpi resolution

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svn: r1734
This commit is contained in:
Matthew Flatt 2005-12-31 16:07:22 +00:00
parent bb7ec163ba
commit dd75f93aee
1 changed files with 20 additions and 2 deletions
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22
src/mzscheme/src/module.c
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@ -1689,6 +1689,8 @@ int same_modidx(Scheme_Object *a, Scheme_Object *b)
return scheme_equal(a, b);
}
static Scheme_Object *_module_resolve_k(void);
static Scheme_Object *_module_resolve(Scheme_Object *modidx, Scheme_Object *stx)
{
if (SCHEME_SYMBOLP(modidx) || SCHEME_FALSEP(modidx))
@ -1704,8 +1706,14 @@ static Scheme_Object *_module_resolve(Scheme_Object *modidx, Scheme_Object *stx)
base = ((Scheme_Modidx *)modidx)->base;
if (!SCHEME_FALSEP(base)) {
/* FIXME: this can go arbitrarily deep, in principle. */
base = _module_resolve(base, NULL);
# include "mzstkchk.h"
{
Scheme_Thread *p = scheme_current_thread;
p->ku.k.p1 = (void *)base;
base = scheme_handle_stack_overflow(_module_resolve_k);
} else {
base = _module_resolve(base, NULL);
}
}
a[0] = ((Scheme_Modidx *)modidx)->path;
@ -1725,6 +1733,16 @@ static Scheme_Object *_module_resolve(Scheme_Object *modidx, Scheme_Object *stx)
return ((Scheme_Modidx *)modidx)->resolved;
}
static Scheme_Object *_module_resolve_k(void)
{
Scheme_Thread *p = scheme_current_thread;
Scheme_Object *base = (Scheme_Object *)p->ku.k.p1;
p->ku.k.p1 = NULL;
return _module_resolve(base, NULL);
}
Scheme_Object *scheme_module_resolve(Scheme_Object *modidx)
{
return _module_resolve(modidx, NULL);