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detail (using unsigned comparison in range check for LOADI)

This commit is contained in:
Roberto Ierusalimschy 2017-04-25 17:01:14 -03:00
parent 6dbae1b5d9
commit a3f9c1a77a
1 changed files with 2 additions and 2 deletions
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4
lcode.c
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@ -1,5 +1,5 @@
/* /*
** $Id: lcode.c,v 2.114 2017/04/24 20:26:39 roberto Exp roberto $ ** $Id: lcode.c,v 2.115 2017/04/25 18:28:25 roberto Exp roberto $
** Code generator for Lua ** Code generator for Lua
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -516,7 +516,7 @@ static int nilK (FuncState *fs) {
void luaK_int (FuncState *fs, int reg, lua_Integer i) { void luaK_int (FuncState *fs, int reg, lua_Integer i) {
if (-MAXARG_sBx <= i && i <= MAXARG_sBx) if (l_castS2U(i) + MAXARG_sBx <= l_castS2U(MAXARG_Bx))
luaK_codeAsBx(fs, OP_LOADI, reg, cast_int(i)); luaK_codeAsBx(fs, OP_LOADI, reg, cast_int(i));
else else
luaK_codek(fs, reg, luaK_intK(fs, i)); luaK_codek(fs, reg, luaK_intK(fs, i));