mirror of https://github.com/lua/lua
A return can have at most 254 values
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parent
8b752ddf14
commit
3e88b72b8e
2
lcode.c
2
lcode.c
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@ -208,6 +208,8 @@ void luaK_ret (FuncState *fs, int first, int nret) {
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case 1: op = OP_RETURN1; break;
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default: op = OP_RETURN; break;
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}
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if (nret + 1 > MAXARG_B)
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luaX_syntaxerror(fs->ls, "too many returns");
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luaK_codeABC(fs, op, first, nret + 1, 0);
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}
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@ -518,5 +518,16 @@ do -- check reuse of strings in dumps
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end
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end
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do -- test limit of multiple returns (254 values)
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local code = "return 10" .. string.rep(",10", 253)
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local res = {assert(load(code))()}
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assert(#res == 254 and res[254] == 10)
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code = code .. ",10"
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local status, msg = load(code)
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assert(not status and string.find(msg, "too many returns"))
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end
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print('OK')
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return deep
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