test/mjsunit/regress/regress-2437.js

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// Test Regexp.prototype.exec
r = /a/;
r.lastIndex = 1;
r.exec("zzzz");
assertEquals(0, r.lastIndex);

// Test Regexp.prototype.test
r = /a/;
r.lastIndex = 1;
r.test("zzzz");
assertEquals(0, r.lastIndex);

// Test String.prototype.match
r = /a/;
r.lastIndex = 1;
"zzzz".match(r);
assertEquals(0, r.lastIndex);

// Test String.prototype.replace with atomic regexp and empty string.
r = /a/;
r.lastIndex = 1;
"zzzz".replace(r, "");
assertEquals(0, r.lastIndex);

// Test String.prototype.replace with non-atomic regexp and empty string.
r = /\d/;
r.lastIndex = 1;
"zzzz".replace(r, "");
assertEquals(0, r.lastIndex);

// Test String.prototype.replace with atomic regexp and non-empty string.
r = /a/;
r.lastIndex = 1;
"zzzz".replace(r, "a");
assertEquals(0, r.lastIndex);

// Test String.prototype.replace with non-atomic regexp and non-empty string.
r = /\d/;
r.lastIndex = 1;
"zzzz".replace(r, "a");
assertEquals(0, r.lastIndex);

// Test String.prototype.replace with replacement function
r = /a/;
r.lastIndex = 1;
"zzzz".replace(r, function() { return ""; });
assertEquals(0, r.lastIndex);