diff options
| author | Yukihiro "Matz" Matsumoto <[email protected]> | 2016-07-25 11:34:55 +0900 |
|---|---|---|
| committer | Yukihiro "Matz" Matsumoto <[email protected]> | 2016-07-25 11:34:55 +0900 |
| commit | 34ac707ea34880e168dc2428d477a33ca7ffec7d (patch) | |
| tree | d90f9f24a2d613b508f623bc8a7de766dd8ff9ad /mrbgems/mruby-compiler/core | |
| parent | 417092360dced241f9cc04884887a55c2407e81a (diff) | |
| download | mruby-34ac707ea34880e168dc2428d477a33ca7ffec7d.tar.gz mruby-34ac707ea34880e168dc2428d477a33ca7ffec7d.zip | |
OP_ASGN vsp may be negative
reported by https://gist.github.com/miura1729/53fbd8af889c289a79108e38635b2378
fix proposed by @miura1729 in
https://github.com/miura1729/mruby/commit/b1b7933f7aa950cfb747b06327a0d0340f3e4ff8
Diffstat (limited to 'mrbgems/mruby-compiler/core')
| -rw-r--r-- | mrbgems/mruby-compiler/core/codegen.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mrbgems/mruby-compiler/core/codegen.c b/mrbgems/mruby-compiler/core/codegen.c index dde289e7c..6e9c3c147 100644 --- a/mrbgems/mruby-compiler/core/codegen.c +++ b/mrbgems/mruby-compiler/core/codegen.c @@ -1785,7 +1785,7 @@ codegen(codegen_scope *s, node *tree, int val) int pos; pop(); - if (val) { + if (val && vsp >= 0) { genop(s, MKOP_AB(OP_MOVE, vsp, cursp())); pos = genop(s, MKOP_AsBx(name[0]=='|'?OP_JMPIF:OP_JMPNOT, cursp(), 0)); } @@ -1794,7 +1794,7 @@ codegen(codegen_scope *s, node *tree, int val) } codegen(s, tree->cdr->cdr->car, VAL); pop(); - if (val) { + if (val && vsp >= 0) { genop(s, MKOP_AB(OP_MOVE, vsp, cursp())); } if ((intptr_t)tree->car->car == NODE_CALL) { @@ -1855,7 +1855,7 @@ codegen(codegen_scope *s, node *tree, int val) gen_assignment(s, tree->car, cursp(), val); } else { - if (val) { + if (val && vsp >= 0) { genop(s, MKOP_AB(OP_MOVE, vsp, cursp())); } if (callargs == CALL_MAXARGS) { |