diff options
| author | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-11-12 08:14:09 +0000 |
|---|---|---|
| committer | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-11-12 08:14:09 +0000 |
| commit | 3208db7fb3403dfbfd1e81cc4b531f36d5cd5fff (patch) | |
| tree | a3421b42245f6562547df33396d39ce8dc70afae /vm_insnhelper.c | |
| parent | 5a10e835ae67daa8e75d23a1b221ce4dc486bc1a (diff) | |
| download | ruby-3208db7fb3403dfbfd1e81cc4b531f36d5cd5fff.tar.gz | |
vm_insnhelper.c: avoid nevative sp
space_size can be zero here, under the following script. We would
better bail out before bptr calculation.
% ./miniruby --dump=i -e '* = nil'
== disasm: #<ISeq:<main>@-e:1 (1,0)-(1,7)> (catch: FALSE)
0000 putnil ( 1)[Li]
0001 dup
0002 expandarray 0, 0
0005 leave
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65685 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'vm_insnhelper.c')
| -rw-r--r-- | vm_insnhelper.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/vm_insnhelper.c b/vm_insnhelper.c index e8dd174c9f..7fb18714dd 100644 --- a/vm_insnhelper.c +++ b/vm_insnhelper.c @@ -1269,7 +1269,10 @@ vm_expandarray(VALUE *sp, VALUE ary, rb_num_t num, int flag) len = (rb_num_t)RARRAY_LEN(ary); } - if (flag & 0x02) { + if (space_size == 0) { + /* no space left on stack */ + } + else if (flag & 0x02) { /* post: ..., nil ,ary[-1], ..., ary[0..-num] # top */ rb_num_t i = 0, j; |