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Check before retrieving struct RRange pointer; fix #3320

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range->edges may be NULL for example when #initialize_copy removed.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2016-12-03 12:27:48 +09:00
parent 9776150263
commit 79a621dd73
3 changed files with 30 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/mruby/range.h
+2 -1
View File
@@ -25,7 +25,8 @@ struct RRange {
mrb_bool excl : 1;
};
#define mrb_range_ptr(v) ((struct RRange*)(mrb_ptr(v)))
MRB_API struct RRange* mrb_range_ptr(mrb_state *mrb, mrb_value v);
#define mrb_range_raw_ptr(v) ((struct RRange*)mrb_ptr(v))
#define mrb_range_value(p) mrb_obj_value((void*)(p))
/*
mrbgems/mruby-range-ext/src/range.c
+3 -3
View File
@@ -44,7 +44,7 @@ static mrb_value
mrb_range_cover(mrb_state *mrb, mrb_value range)
{
mrb_value val;
struct RRange *r = mrb_range_ptr(range);
struct RRange *r = mrb_range_ptr(mrb, range);
mrb_value beg, end;
mrb_get_args(mrb, "o", &val);
@@ -87,7 +87,7 @@ mrb_range_last(mrb_state *mrb, mrb_value range)
{
mrb_value num;
mrb_value array;
struct RRange *r = mrb_range_ptr(range);
struct RRange *r = mrb_range_ptr(mrb, range);
if (mrb_get_args(mrb, "|o", &num) == 0) {
return r->edges->end;
@@ -111,7 +111,7 @@ mrb_range_last(mrb_state *mrb, mrb_value range)
static mrb_value
mrb_range_size(mrb_state *mrb, mrb_value range)
{
struct RRange *r = mrb_range_ptr(range);
struct RRange *r = mrb_range_ptr(mrb, range);
mrb_value beg, end;
mrb_float beg_f, end_f;
mrb_bool num_p = TRUE;
src/range.c
+25 -14
View File
@@ -12,6 +12,17 @@
#define RANGE_CLASS (mrb_class_get(mrb, "Range"))
MRB_API struct RRange*
mrb_range_ptr(mrb_state *mrb, mrb_value v)
{
struct RRange *r = (struct RRange*)mrb_ptr(v);
if (r->edges == NULL) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "uninitialized range");
}
return r;
}
static void
range_check(mrb_state *mrb, mrb_value a, mrb_value b)
{
@@ -57,7 +68,7 @@ mrb_range_new(mrb_state *mrb, mrb_value beg, mrb_value end, mrb_bool excl)
mrb_value
mrb_range_beg(mrb_state *mrb, mrb_value range)
{
struct RRange *r = mrb_range_ptr(range);
struct RRange *r = mrb_range_ptr(mrb, range);
return r->edges->beg;
}
@@ -76,7 +87,7 @@ mrb_range_beg(mrb_state *mrb, mrb_value range)
mrb_value
mrb_range_end(mrb_state *mrb, mrb_value range)
{
struct RRange *r = mrb_range_ptr(range);
struct RRange *r = mrb_range_ptr(mrb, range);
return r->edges->end;
}
@@ -90,7 +101,7 @@ mrb_range_end(mrb_state *mrb, mrb_value range)
mrb_value
mrb_range_excl(mrb_state *mrb, mrb_value range)
{
struct RRange *r = mrb_range_ptr(range);
struct RRange *r = mrb_range_ptr(mrb, range);
return mrb_bool_value(r->excl);
}
@@ -98,7 +109,7 @@ mrb_range_excl(mrb_state *mrb, mrb_value range)
static void
range_init(mrb_state *mrb, mrb_value range, mrb_value beg, mrb_value end, mrb_bool exclude_end)
{
struct RRange *r = mrb_range_ptr(range);
struct RRange *r = mrb_range_raw_ptr(range);
range_check(mrb, beg, end);
r->excl = exclude_end;
@@ -129,7 +140,7 @@ mrb_range_initialize(mrb_state *mrb, mrb_value range)
exclusive = FALSE;
}
/* Ranges are immutable, so that they should be initialized only once. */
if (mrb_range_ptr(range)->edges) {
if (mrb_range_raw_ptr(range)->edges) {
mrb_name_error(mrb, mrb_intern_lit(mrb, "initialize"), "`initialize' called twice");
}
range_init(mrb, range, beg, end, exclusive);
@@ -164,8 +175,8 @@ mrb_range_eq(mrb_state *mrb, mrb_value range)
return mrb_false_value();
}
rr = mrb_range_ptr(range);
ro = mrb_range_ptr(obj);
rr = mrb_range_ptr(mrb, range);
ro = mrb_range_ptr(mrb, obj);
v1 = mrb_funcall(mrb, rr->edges->beg, "==", 1, ro->edges->beg);
v2 = mrb_funcall(mrb, rr->edges->end, "==", 1, ro->edges->end);
if (!mrb_bool(v1) || !mrb_bool(v2) || rr->excl != ro->excl) {
@@ -222,7 +233,7 @@ mrb_value
mrb_range_include(mrb_state *mrb, mrb_value range)
{
mrb_value val;
struct RRange *r = mrb_range_ptr(range);
struct RRange *r = mrb_range_ptr(mrb, range);
mrb_value beg, end;
mrb_bool include_p;
@@ -241,7 +252,7 @@ static mrb_bool
range_beg_len(mrb_state *mrb, mrb_value range, mrb_int *begp, mrb_int *lenp, mrb_int len, mrb_bool trunc)
{
mrb_int beg, end;
struct RRange *r = mrb_range_ptr(range);
struct RRange *r = mrb_range_ptr(mrb, range);
if (mrb_type(range) != MRB_TT_RANGE) return FALSE;
@@ -287,7 +298,7 @@ static mrb_value
range_to_s(mrb_state *mrb, mrb_value range)
{
mrb_value str, str2;
struct RRange *r = mrb_range_ptr(range);
struct RRange *r = mrb_range_ptr(mrb, range);
str = mrb_obj_as_string(mrb, r->edges->beg);
str2 = mrb_obj_as_string(mrb, r->edges->end);
@@ -312,7 +323,7 @@ static mrb_value
range_inspect(mrb_state *mrb, mrb_value range)
{
mrb_value str, str2;
struct RRange *r = mrb_range_ptr(range);
struct RRange *r = mrb_range_ptr(mrb, range);
str = mrb_inspect(mrb, r->edges->beg);
str2 = mrb_inspect(mrb, r->edges->end);
@@ -352,8 +363,8 @@ range_eql(mrb_state *mrb, mrb_value range)
}
if (mrb_type(obj) != MRB_TT_RANGE) return mrb_false_value();
r = mrb_range_ptr(range);
o = mrb_range_ptr(obj);
r = mrb_range_ptr(mrb, range);
o = mrb_range_ptr(mrb, obj);
if (!mrb_eql(mrb, r->edges->beg, o->edges->beg) ||
!mrb_eql(mrb, r->edges->end, o->edges->end) ||
(r->excl != o->excl)) {
@@ -376,7 +387,7 @@ range_initialize_copy(mrb_state *mrb, mrb_value copy)
mrb_raise(mrb, E_TYPE_ERROR, "wrong argument class");
}
r = mrb_range_ptr(src);
r = mrb_range_ptr(mrb, src);
range_init(mrb, copy, r->edges->beg, r->edges->end, r->excl);
return copy;