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fix corner cases related to in (#3964)

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This commit is contained in:
Alex Lam S.L
2020-06-07 22:23:23 +01:00
committed by GitHub
parent 28b7b15da1
commit df3bb8028a
7 changed files with 106 additions and 11 deletions
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24
test/ufuzz/index.js
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@@ -168,7 +168,7 @@ var VALUES = [
"this",
];
var BINARY_OPS_NO_COMMA = [
var BINARY_OPS = [
" + ", // spaces needed to disambiguate with ++ cases (could otherwise cause syntax errors)
" - ",
"/",
@@ -190,9 +190,14 @@ var BINARY_OPS_NO_COMMA = [
"%",
"&&",
"||",
"^" ];
var BINARY_OPS = [","].concat(BINARY_OPS_NO_COMMA);
"^",
",",
];
BINARY_OPS = BINARY_OPS.concat(BINARY_OPS);
BINARY_OPS = BINARY_OPS.concat(BINARY_OPS);
BINARY_OPS = BINARY_OPS.concat(BINARY_OPS);
BINARY_OPS = BINARY_OPS.concat(BINARY_OPS);
BINARY_OPS.push(" in ");
var ASSIGNMENTS = [
"=",
@@ -879,7 +884,7 @@ function createNestedBinaryExpr(recurmax, noComma, stmtDepth, canThrow) {
}
function _createBinaryExpr(recurmax, noComma, stmtDepth, canThrow) {
return "(" + _createSimpleBinaryExpr(recurmax, noComma, stmtDepth, canThrow)
+ createBinaryOp(noComma) + _createSimpleBinaryExpr(recurmax, noComma, stmtDepth, canThrow) + ")";
+ createBinaryOp(noComma, canThrow) + _createSimpleBinaryExpr(recurmax, noComma, stmtDepth, canThrow) + ")";
}
function _createSimpleBinaryExpr(recurmax, noComma, stmtDepth, canThrow) {
// intentionally generate more hardcore ops
@@ -929,9 +934,12 @@ function createValue() {
return VALUES[rng(VALUES.length)];
}
function createBinaryOp(noComma) {
if (noComma) return BINARY_OPS_NO_COMMA[rng(BINARY_OPS_NO_COMMA.length)];
return BINARY_OPS[rng(BINARY_OPS.length)];
function createBinaryOp(noComma, canThrow) {
var op;
do {
op = BINARY_OPS[rng(BINARY_OPS.length)];
} while (noComma && op == "," || !canThrow && op == " in ");
return op;
}
function createAssignment() {