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A to-be-closed variable must have a closable value (or be nil)

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It is an error for a to-be-closed variable to have a non-closable
non-nil value when it is being closed. This situation does not seem to
be useful and often hints to an error. (Particularly in the C API, it is
easy to change a to-be-closed index by mistake.)
This commit is contained in:
Roberto Ierusalimschy 2018-11-29 16:02:44 -02:00
parent 7696c6474f
commit 6d04537ea6
9 changed files with 83 additions and 39 deletions
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2
ldebug.h
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@ -22,6 +22,8 @@
#define ABSLINEINFO (-0x80)
LUAI_FUNC int luaG_getfuncline (const Proto *f, int pc);
LUAI_FUNC const char *luaG_findlocal (lua_State *L, CallInfo *ci, int n,
StkId *pos);
LUAI_FUNC l_noret luaG_typeerror (lua_State *L, const TValue *o,
const char *opname);
LUAI_FUNC l_noret luaG_forerror (lua_State *L, const TValue *o,