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commit 1f3c6f4534c6411313361697d98d1145a1f030fa
parent 25b143dd34fb587d1e35290c4b25bc08954800e2
Author: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date:   Tue, 15 Feb 2022 12:28:19 -0300

Bug: Lua can generate wrong code when _ENV is <const>

Diffstat:
Mlparser.c | 1+
Mtestes/attrib.lua | 10++++++++++
2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/lparser.c b/lparser.c @@ -468,6 +468,7 @@ static void singlevar (LexState *ls, expdesc *var) { expdesc key; singlevaraux(fs, ls->envn, var, 1); /* get environment variable */ lua_assert(var->k != VVOID); /* this one must exist */ + luaK_exp2anyregup(fs, var); /* but could be a constant */ codestring(&key, varname); /* key is variable name */ luaK_indexed(fs, var, &key); /* env[varname] */ } diff --git a/testes/attrib.lua b/testes/attrib.lua @@ -434,6 +434,16 @@ a.aVeryLongName012345678901234567890123456789012345678901234567890123456789 == 10) +do + -- _ENV constant + local function foo () + local _ENV <const> = 11 + X = "hi" + end + local st, msg = pcall(foo) + assert(not st and string.find(msg, "number")) +end + -- test of large float/integer indices