Global initialization checks name conflict

Initialization "global a = 10" raises an error if global 'a' is already
defined, that is, it has a non-nil value.

1 files changed, 2 insertions, 0 deletions

diff --git a/lcode.h b/lcode.h
index f6397a3c..09e5c802 100644
--- a/lcode.h
+++ b/lcode.h
@@ -68,6 +68,8 @@ LUAI_FUNC int luaK_codevABCk (FuncState *fs, OpCode o, int A, int B, int C,
 LUAI_FUNC int luaK_exp2const (FuncState *fs, const expdesc *e, TValue *v);
 LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
 LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
+LUAI_FUNC void luaK_codecheckglobal (FuncState *fs, expdesc *var, int k,
+                                                    int line);
 LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
 LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
 LUAI_FUNC void luaK_int (FuncState *fs, int reg, lua_Integer n);