test/mjsunit/string-replace-with-empty.js

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// Flags: --expose-externalize-string

assertEquals("0123", "aa0bb1cc2dd3".replace(/[a-z]/g, ""));
assertEquals("0123", "\u1234a0bb1cc2dd3".replace(/[\u1234a-z]/g, ""));

var expected = "0123";
var cons = "a0b1c2d3";
for (var i = 0; i < 5; i++) {
  expected += expected;
  cons += cons;
}
assertEquals(expected, cons.replace(/[a-z]/g, ""));
cons = "\u12340b1c2d3";
for (var i = 0; i < 5; i++) {
  cons += cons;
}
assertEquals(expected, cons.replace(/[\u1234a-z]/g, ""));

cons = "a0b1c2d3";
for (var i = 0; i < 5; i++) {
  cons += cons;
}
externalizeString(cons, true/* force two-byte */);
assertEquals(expected, cons.replace(/[a-z]/g, ""));
cons = "\u12340b1c2d3";
for (var i = 0; i < 5; i++) {
  cons += cons;
}
externalizeString(cons);
assertEquals(expected, cons.replace(/[\u1234a-z]/g, ""));