Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

11 files changed, 715 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/coverage/bug1203695.js b/js/src/jit-test/tests/coverage/bug1203695.js
new file mode 100644
index 0000000000..5a8a091d6a
--- /dev/null
+++ b/js/src/jit-test/tests/coverage/bug1203695.js
@@ -0,0 +1,15 @@
+// |jit-test| --code-coverage
+
+var lfcode = new Array();
+lfcode.push = loadFile;
+lfcode.push(")");
+lfcode.push(`
+assertThrowsInstanceOf(function () {}, TypeError);
+var g = newGlobal();
+`);
+getLcovInfo(g);
+function loadFile(lfVarx) {
+    try {
+        evaluate(lfVarx, { noScriptRval : true, compileAndGo : true });
+    } catch (lfVare) {}
+}
diff --git a/js/src/jit-test/tests/coverage/bug1206247.js b/js/src/jit-test/tests/coverage/bug1206247.js
new file mode 100644
index 0000000000..f6b954df76
--- /dev/null
+++ b/js/src/jit-test/tests/coverage/bug1206247.js
@@ -0,0 +1,6 @@
+// |jit-test| --code-coverage
+
+evaluate("", {
+    fileName: null
+});
+getLcovInfo();
diff --git a/js/src/jit-test/tests/coverage/bug1214548.js b/js/src/jit-test/tests/coverage/bug1214548.js
new file mode 100644
index 0000000000..b54cd80169
--- /dev/null
+++ b/js/src/jit-test/tests/coverage/bug1214548.js
@@ -0,0 +1,12 @@
+// |jit-test| --code-coverage
+
+if (!('oomTest' in this))
+    quit();
+
+oomTest(() => {
+  var g = newGlobal({sameZoneAs: this});
+  g.eval("\
+    function f(){}; \
+    getLcovInfo(); \
+  ");
+});
diff --git a/js/src/jit-test/tests/coverage/bug1274048.js b/js/src/jit-test/tests/coverage/bug1274048.js
new file mode 100644
index 0000000000..526a2c9142
--- /dev/null
+++ b/js/src/jit-test/tests/coverage/bug1274048.js
@@ -0,0 +1,10 @@
+// |jit-test| --code-coverage
+
+function h() {
+    return 1;
+}
+function g() {
+    switch (h()) {}
+}
+g();
+getLcovInfo();
diff --git a/js/src/jit-test/tests/coverage/bug1304569-switch-case.js b/js/src/jit-test/tests/coverage/bug1304569-switch-case.js
new file mode 100644
index 0000000000..d243c7fddc
--- /dev/null
+++ b/js/src/jit-test/tests/coverage/bug1304569-switch-case.js
@@ -0,0 +1,14 @@
+// |jit-test| --code-coverage
+
+s = newGlobal()
+evalcx("\
+    switch (0) {\
+        default: break;\
+        case 1:\
+                this.s += this.s;\
+                g(h(\"\", 2));\
+                break;\
+                break\
+    }\
+", s)
+evalcx("getLcovInfo()", s)
diff --git a/js/src/jit-test/tests/coverage/getLcovInfo_twice.js b/js/src/jit-test/tests/coverage/getLcovInfo_twice.js
new file mode 100644
index 0000000000..dd78513729
--- /dev/null
+++ b/js/src/jit-test/tests/coverage/getLcovInfo_twice.js
@@ -0,0 +1,4 @@
+// |jit-test| --code-coverage
+
+getLcovInfo();
+getLcovInfo();
diff --git a/js/src/jit-test/tests/coverage/lcov-enabled-1.js b/js/src/jit-test/tests/coverage/lcov-enabled-1.js
new file mode 100644
index 0000000000..0bbb53f2fe
--- /dev/null
+++ b/js/src/jit-test/tests/coverage/lcov-enabled-1.js
@@ -0,0 +1,5 @@
+// |jit-test| --code-coverage
+
+// Use the `--code-coverage` shell argument must enable JS code-coverage support
+// for the process.
+assertEq(isLcovEnabled(), true);
diff --git a/js/src/jit-test/tests/coverage/lcov-enabled-2.js b/js/src/jit-test/tests/coverage/lcov-enabled-2.js
new file mode 100644
index 0000000000..133d167e3d
--- /dev/null
+++ b/js/src/jit-test/tests/coverage/lcov-enabled-2.js
@@ -0,0 +1,7 @@
+
+// Setting the `JS_CODE_COVERAGE_OUTPUT_DIR` for will also enable coverage for
+// the process.
+
+if (os.getenv("JS_CODE_COVERAGE_OUTPUT_DIR")) {
+    assertEq(isLcovEnabled(), true);
+}
diff --git a/js/src/jit-test/tests/coverage/off-thread-01.js b/js/src/jit-test/tests/coverage/off-thread-01.js
new file mode 100644
index 0000000000..0175297a2e
--- /dev/null
+++ b/js/src/jit-test/tests/coverage/off-thread-01.js
@@ -0,0 +1,22 @@
+// |jit-test| --code-coverage; --no-ion; skip-if: helperThreadCount() === 0
+
+assertEq(isLcovEnabled(), true);
+
+offThreadCompileScript(`
+    let hitCount = 0;
+    function offThreadFun() {
+        hitCount += 1;
+    }
+
+    offThreadFun();
+    offThreadFun();
+    offThreadFun();
+    offThreadFun();
+`);
+runOffThreadScript();
+assertEq(hitCount, 4);
+
+let report = getLcovInfo();
+
+const expected = "FNDA:4,offThreadFun";
+assertEq(report.includes(expected), true);
diff --git a/js/src/jit-test/tests/coverage/off-thread-02.js b/js/src/jit-test/tests/coverage/off-thread-02.js
new file mode 100644
index 0000000000..12f925903d
--- /dev/null
+++ b/js/src/jit-test/tests/coverage/off-thread-02.js
@@ -0,0 +1,24 @@
+// |jit-test| --code-coverage; --no-ion; skip-if: helperThreadCount() === 0
+
+assertEq(isLcovEnabled(), true);
+
+offThreadCompileModule(`
+    globalThis.hitCount = 0;
+    function offThreadFun() {
+        globalThis.hitCount += 1;
+    }
+
+    offThreadFun();
+    offThreadFun();
+    offThreadFun();
+    offThreadFun();
+`);
+let mod = finishOffThreadModule();
+mod.declarationInstantiation();
+mod.evaluation();
+assertEq(hitCount, 4);
+
+const expected = "FNDA:4,offThreadFun";
+
+let report = getLcovInfo();
+assertEq(report.includes(expected), true);
diff --git a/js/src/jit-test/tests/coverage/simple.js b/js/src/jit-test/tests/coverage/simple.js
new file mode 100644
index 0000000000..324dbb4233
--- /dev/null
+++ b/js/src/jit-test/tests/coverage/simple.js
@@ -0,0 +1,596 @@
+// |jit-test| --code-coverage
+
+// Currently the Jit integration has a few issues, let's keep this test
+// case deterministic.
+//
+//  - Baseline OSR increments the loop header twice.
+//  - Ion is not updating any counter yet.
+//
+if (getJitCompilerOptions()["ion.warmup.trigger"] != 30)
+  setJitCompilerOption("ion.warmup.trigger", 30);
+if (getJitCompilerOptions()["baseline.warmup.trigger"] != 10)
+  setJitCompilerOption("baseline.warmup.trigger", 10);
+
+/*
+ * These test cases are annotated with the output produced by LCOV [1].  Comment
+ * starting with //<key> without any spaces are used as a reference for the code
+ * coverage output.  Any "$" in these line comments are replaced by the current
+ * line number, and any "%" are replaced with the current function name (defined
+ * by the FN key).
+ *
+ * [1]  http://ltp.sourceforge.net/coverage/lcov/geninfo.1.php
+ */
+function checkLcov(fun) {
+  var keys = [ "TN", "SF", "FN", "FNDA", "FNF", "FNH", "BRDA", "BRF", "BRH", "DA", "LF", "LH" ];
+  function startsWithKey(s) {
+    for (k of keys) {
+      if (s.startsWith(k))
+        return true;
+    }
+    return false;
+  };
+
+  // Extract the body of the function, as the code to be executed.
+  var source = fun.toString();
+  source = source.slice(source.indexOf('{') + 1, source.lastIndexOf('}'));
+
+  // Extract comment starting with the previous keys, as a reference of the
+  // output expected from getLcovInfo.
+  var lcovRef = [];
+  var currLine = 0;
+  var currFun = "<badfunction>";
+  for (var line of source.split('\n')) {
+    currLine++;
+    for (var comment of line.split("//").slice(1)) {
+      if (!startsWithKey(comment))
+        continue;
+      comment = comment.trim();
+      if (comment.startsWith("FN:"))
+        currFun = comment.split(',')[1];
+      comment = comment.replace('$', currLine);
+      comment = comment.replace('%', currFun);
+      lcovRef.push(comment);
+    }
+  }
+
+  // Evaluate the code, and generate the Lcov result from the execution. We have
+  // to disable lazy parsing, as we rely on the ZoneCellIter to emulate the
+  // behaviour of the finalizer.
+  var g = newGlobal({ disableLazyParsing: true });
+  g.eval(source);
+  var lcovResRaw = getLcovInfo(g);
+
+  // Check that all the lines are present the result.
+  var lcovRes = lcovResRaw.split('\n');
+  for (ref of lcovRef) {
+    if (lcovRes.indexOf(ref) == -1) {
+      print("Cannot find `" + ref + "` in the following Lcov result:\n", lcovResRaw);
+      print("In the following source:\n", source);
+      assertEq(true, false);
+    }
+  }
+}
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  ",".split(','); //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:1
+  //LH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  function f() {    //FN:$,f
+    ",".split(','); //DA:$,0
+  }
+  ",".split(',');   //DA:$,1
+  //FNF:2
+  //FNH:1
+  //LF:2
+  //LH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  function f() {    //FN:$,f //FNDA:1,%
+    ",".split(','); //DA:$,1
+  }
+  f();              //DA:$,1
+  //FNF:2
+  //FNH:2
+  //LF:2
+  //LH:2
+});
+
+checkLcov(function () { ','.split(','); //FN:$,top-level //FNDA:1,% //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:1
+  //LH:1
+});
+
+checkLcov(function () { function f() { ','.split(','); } //FN:$,top-level //FNDA:1,% //FN:$,f //FNDA:1,f //DA:$,1
+  f(); //DA:$,1
+  //FNF:2
+  //FNH:2
+  //LF:2
+  //LH:2
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  if (l.length == 3)      //DA:$,1 //BRDA:$,0,0,1 //BRDA:$,0,1,0
+    l.push('');           //DA:$,0
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:4
+  //LH:3
+  //BRF:2
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  if (l.length == 2)      //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,1
+    l.push('');           //DA:$,1
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:4
+  //LH:4
+  //BRF:2
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  if (l.length == 3)      //DA:$,1 //BRDA:$,0,0,1 //BRDA:$,0,1,0
+    l.push('');           //DA:$,0
+  else
+    l.pop();              //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:4
+  //LH:3
+  //BRF:2
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  if (l.length == 2)      //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,1
+    l.push('');           //DA:$,1
+  else
+    l.pop();              //DA:$,0
+  //FNF:1
+  //FNH:1
+  //LF:4
+  //LH:3
+  //BRF:2
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  if (l.length == 2)      //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,1
+    l.push('');           //DA:$,1
+  else {
+    if (l.length == 1)    //DA:$,0 //BRDA:$,1,0,- //BRDA:$,1,1,-
+      l.pop();            //DA:$,0
+  }
+  //FNF:1
+  //FNH:1
+  //LF:5
+  //LH:3
+  //BRF:4
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  function f(i) { //FN:$,f //FNDA:2,%
+    var x = 0;    //DA:$,2
+    while (i--) { // Currently OSR wrongly count the loop header twice.
+                  // So instead of DA:$,12 , we have DA:$,13 .
+      x += i;     //DA:$,10
+      x = x / 2;  //DA:$,10
+    }
+    return x;     //DA:$,2
+    //BRF:2
+    //BRH:2
+  }
+
+  f(5);           //DA:$,1
+  f(5);           //DA:$,1
+  //FNF:2
+  //FNH:2
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  try {                     //DA:$,1
+    var l = ",".split(','); //DA:$,1
+    if (l.length == 2) {    //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,1
+      l.push('');           //DA:$,1
+      throw l;              //DA:$,1
+    }
+    l.pop();                //DA:$,0
+  } catch (x) {             //DA:$,1
+    x.pop();                //DA:$,1
+  }
+  //FNF:1
+  //FNH:1
+  //LF:8
+  //LH:7
+  //BRF:2
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(',');   //DA:$,1
+  try {                     //DA:$,1
+    try {                   //DA:$,1
+      if (l.length == 2) {  //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,1
+        l.push('');         //DA:$,1
+        throw l;            //DA:$,1
+      }
+      l.pop();              //DA:$,0
+    } finally {             //DA:$,1
+      l.pop();              //DA:$,1
+    }
+  } catch (x) {             //DA:$,1
+  }
+  //FNF:1
+  //FNH:1
+  //LF:10
+  //LH:9
+  //BRF:2
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  function f() {            //FN:$,f //FNDA:1,%
+    throw 1;                //DA:$,1
+    f();                    //DA:$,0
+  }
+  var l = ",".split(',');   //DA:$,1
+  try {                     //DA:$,1
+    f();                    //DA:$,1
+    f();                    //DA:$,0
+  } catch (x) {             //DA:$,1
+  }
+  //FNF:2
+  //FNH:2
+  //LF:7
+  //LH:5
+  //BRF:0
+  //BRH:0
+});
+
+// Test TableSwitch opcode
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  switch (l.length) {     //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,0 //BRDA:$,0,2,1 //BRDA:$,0,3,0 //BRDA:$,0,4,0
+    case 0:
+      l.push('0');        //DA:$,0
+      break;
+    case 1:
+      l.push('1');        //DA:$,0
+      break;
+    case 2:
+      l.push('2');        //DA:$,1
+      break;
+    case 3:
+      l.push('3');        //DA:$,0
+      break;
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:7
+  //LH:4
+  //BRF:5
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  switch (l.length) {     //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,0 //BRDA:$,0,2,1 //BRDA:$,0,3,0 //BRDA:$,0,4,0
+    case 0:
+      l.push('0');        //DA:$,0
+    case 1:
+      l.push('1');        //DA:$,0
+    case 2:
+      l.push('2');        //DA:$,1
+    case 3:
+      l.push('3');        //DA:$,1
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:7
+  //LH:5
+  //BRF:5
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+                          // Branches are ordered, and starting at 0
+  switch (l.length) {     //DA:$,1 //BRDA:$,0,0,1 //BRDA:$,0,1,0 //BRDA:$,0,2,0 //BRDA:$,0,3,0 //BRDA:$,0,4,0
+    case 5:
+      l.push('5');        //DA:$,0
+    case 4:
+      l.push('4');        //DA:$,0
+    case 3:
+      l.push('3');        //DA:$,0
+    case 2:
+      l.push('2');        //DA:$,1
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:7
+  //LH:4
+  //BRF:5
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  switch (l.length) {     //DA:$,1 //BRDA:$,0,0,1 //BRDA:$,0,1,0 //BRDA:$,0,2,0
+    case 2:
+      l.push('2');        //DA:$,1
+    case 5:
+      l.push('5');        //DA:$,1
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:5
+  //LH:5
+  //BRF:3
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  switch (l.length) {     //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,1 //BRDA:$,0,2,0
+    case 3:
+      l.push('1');        //DA:$,0
+    case 5:
+      l.push('5');        //DA:$,0
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:5
+  //LH:3
+  //BRF:3
+  //BRH:1
+});
+
+// Unfortunately the differences between switch implementations leaks in the
+// code coverage reports.
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  function f(a) {         //FN:$,f //FNDA:2,%
+    return a;             //DA:$,2
+  }
+  var l = ",".split(','); //DA:$,1
+  switch (l.length) {     //DA:$,1
+    case f(-42):          //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,1
+      l.push('1');        //DA:$,0
+    case f(51):           //DA:$,1 //BRDA:$,1,0,0 //BRDA:$,1,1,1
+      l.push('5');        //DA:$,0
+  }
+  l.pop();                //DA:$,1
+  //FNF:2
+  //FNH:2
+  //LF:8
+  //LH:6
+  //BRF:4
+  //BRH:2
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  switch (l.length) {     //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,1 //BRDA:$,0,2,0 //BRDA:$,0,3,0
+    case 0:
+    case 1:
+      l.push('0');        //DA:$,0
+      l.push('1');        //DA:$,0
+    case 2:
+      l.push('2');        //DA:$,1
+    case 3:
+      l.push('3');        //DA:$,1
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:7
+  //LH:5
+  //BRF:4
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  switch (l.length) {     //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,0 //BRDA:$,0,2,1 //BRDA:$,0,3,0
+    case 0:
+      l.push('0');        //DA:$,0
+    case 1:
+      l.push('1');        //DA:$,0
+    case 2:
+    case 3:
+      l.push('2');        //DA:$,1
+      l.push('3');        //DA:$,1
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:7
+  //LH:5
+  //BRF:4
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  switch (l.length) {     //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,0 //BRDA:$,0,2,1 //BRDA:$,0,3,0
+    case 0:
+      l.push('0');        //DA:$,0
+    case 1:
+    default:
+      l.push('1');        //DA:$,0
+    case 2:
+      l.push('2');        //DA:$,1
+    case 3:
+      l.push('3');        //DA:$,1
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:7
+  //LH:5
+  //BRF:4
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  switch (l.length) {     //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,0 //BRDA:$,0,2,1 //BRDA:$,0,3,0
+    case 0:
+      l.push('0');        //DA:$,0
+    case 1:
+      l.push('1');        //DA:$,0
+    default:
+    case 2:
+      l.push('2');        //DA:$,1
+    case 3:
+      l.push('3');        //DA:$,1
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:7
+  //LH:5
+  //BRF:4
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  switch (l.length) {     //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,0 //BRDA:$,0,2,1 //BRDA:$,0,3,0 //BRDA:$,0,4,0
+    case 0:
+      l.push('0');        //DA:$,0
+    case 1:
+      l.push('1');        //DA:$,0
+    default:
+      l.push('default');  //DA:$,0
+    case 2:
+      l.push('2');        //DA:$,1
+    case 3:
+      l.push('3');        //DA:$,1
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:8
+  //LH:5
+  //BRF:5
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ",".split(','); //DA:$,1
+  switch (l.length) {     //DA:$,1 //BRDA:$,0,0,0 //BRDA:$,0,1,0 //BRDA:$,0,2,1 //BRDA:$,0,3,0
+    case 0:
+      l.push('0');        //DA:$,0
+    case 1:
+      l.push('1');        //DA:$,0
+    default:
+      l.push('2');        //DA:$,1
+    case 3:
+      l.push('3');        //DA:$,1
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:7
+  //LH:5
+  //BRF:4
+  //BRH:1
+});
+
+checkLcov(function () { //FN:$,top-level //FNDA:1,%
+  var l = ','.split(','); //DA:$,1
+  if (l.length === 45) {  //DA:$,1 //BRDA:$,0,0,1 //BRDA:$,0,1,0
+    switch (l[0]) {       //DA:$,0 //BRDA:$,1,0,- //BRDA:$,1,1,-
+      case ',':
+        l.push('0');      //DA:$,0
+      default:
+        l.push('1');      //DA:$,0
+    }
+  }
+  l.pop();                //DA:$,1
+  //FNF:1
+  //FNH:1
+  //LF:6
+  //LH:3
+  //BRF:4
+  //BRH:1
+});
+
+// These tests are not included in ../debug/Script-getOffsetsCoverage-01.js
+// because we're specifically testing a feature of Lcov output that
+// Debugger.Script doesn't have (the aggregation of hits that are on the
+// same line but in different functions).
+{
+    checkLcov(function () { //FN:$,top-level //FNDA:1,%
+        function f() { return 0; } var l = f(); //DA:$,2
+        //FNF:2
+        //FNH:2
+        //LF:1
+        //LH:1
+    });
+
+    // A single line has two functions on it, and both hit.
+    checkLcov(function () { //FN:$,top-level //FNDA:1,%
+        function f() { return 0; } function g() { return 1; } //DA:$,2
+        var v = f() + g(); //DA:$,1
+        //FNF:3
+        //FNH:3
+        //LF:2
+        //LH:2
+    });
+
+    // A line has both function code and toplevel code, and only one of them hits.
+    checkLcov(function () { //FN:$,top-level //FNDA:1,%
+        if (1 === 2)  //DA:$,1
+            throw "0 hits here"; function f() { return "1 hit here"; } //DA:$,1
+        f();  //DA:$,1
+        //FNF:2
+        //FNH:2
+        //LF:3
+        //LH:3
+    });
+}
+
+// These tests are not included in ../debug/Script-getOffsetsCoverage-01.js
+// because they are testing behaviour of --code-coverage.
+{
+  // Test function names
+  checkLcov(function () {
+    //FN:1,top-level
+    //FNDA:1,top-level
+
+    var x = function() {};  //FN:$,x
+    let y = function() {};  //FN:$,y
+
+    let z = {
+      z_method() { },       //FN:$,z_method
+      get z_prop() { },     //FN:$,get z_prop
+    }
+  });
+}
+
+// If you add a test case here, do the same in
+// jit-test/tests/debug/Script-getOffsetsCoverage-01.js