1 files changed, 76 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/regexp/bug-1841771.js b/js/src/jit-test/tests/regexp/bug-1841771.js
new file mode 100644
index 0000000000..ae13aa86f5
--- /dev/null
+++ b/js/src/jit-test/tests/regexp/bug-1841771.js
@@ -0,0 +1,76 @@
+var lfLogBuffer = `
+let hasFunction ;
+for (const name of [, "" ]) 
+  g55 = newGlobal();
+gcparam('maxBytes', gcparam('gcBytes') );
+//corefuzz-dcd-endofdata
+/*
+//corefuzz-dcd-endofdata
+/**/
+
+
+
+let hasFunction ;
+for (const name of [ "", "", "", ""]) {
+
+
+
+
+
+    const present = name in this;
+    if (!present) 
+        thisname = function() {};
+}
+//corefuzz-dcd-endofdata
+//corefuzz-dcd-selectmode 1089924061
+//corefuzz-dcd-endofdata
+oomTest(function() {
+  let m14 = parseModule('a'.replace(/a/, assertEq.toString));
+});
+`;
+lfLogBuffer = lfLogBuffer.split('\n');
+let lfPreamble = `
+  Object.defineProperty(this, "fuzzutils", {
+    value:{
+        untemplate: function(s) {
+          return s.replace(/\\\\/g, '\\\\\\\\').replace(/\`/g, '\\\\\`').replace(/\\\$/g, '\\\\\$'); 
+        }
+    }
+  });
+function lfFixRedeclaration(lfSrc, lfExc, lfRewriteSet) {
+    let varName;
+    let srcParts = lfSrc.split("\\n");
+    let regReplace = new RegExp;
+    for (let lfIdx = 0; lfIdx < srcParts.length; ++lfIdx)
+      srcParts[lfExc.lineNumber - 1] = srcParts[lfExc.lineNumber - 1].replace(regReplace, varName);
+    return srcParts.join();
+}
+`;
+evaluate(lfPreamble);
+let lfRunTypeId = -1;
+let lfCodeBuffer = "";
+while (true) {
+    let line = lfLogBuffer.shift();
+    if (line == null) break;
+    else if (line == "//corefuzz-dcd-endofdata") {
+        loadFile(lfCodeBuffer);
+        lfCodeBuffer = "";
+    } else lfCodeBuffer += line + "\n";
+}
+loadFile(lfCodeBuffer);
+function loadFile(lfVarx, lfForceRunType = 0, lfPatchSets = []) {
+    try {
+        if (lfVarx.indexOf("//corefuzz-dcd-selectmode ") === 0) {
+            if (lfGCStress);
+        } else {
+                evaluate(lfVarx);
+        }
+    } catch (lfVare) {
+        if (lfVare.toString.indexOf0 >= 0);
+        else if (lfVare.toString().indexOf("redeclaration of ") >= 0) {
+            let lfNewSrc = lfFixRedeclaration(lfVarx, lfVare, lfPatchSets);
+            loadFile(lfNewSrc, lfRunTypeId, lfPatchSets);
+        }
+        lfVarx = fuzzutils.untemplate(lfVarx);
+    }
+}