1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-onPop-23.js b/js/src/jit-test/tests/debug/Frame-onPop-23.js
new file mode 100644
index 0000000000..894250ef5b
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-onPop-23.js
@@ -0,0 +1,34 @@
+// Check that the line number reported at an onPop stop makes sense,
+// even when it happens on an "artificial" instruction.
+
+var g = newGlobal({newCompartment: true});
+
+// This bit of code arranges for the line number of the "artificial"
+// instruction to be something nonsensical -- the middle of a loop
+// which cannot be entered.
+g.eval(`function f() {
+  debugger;                   // +0
+  if(false) {                 // +1
+    for(var b=0; b<0; b++) {  // +2
+      c = 2;                  // +3
+    }                         // +4
+  }                           // +5
+}                             // +6
+`);
+
+var dbg = Debugger(g);
+
+let debugLine;
+let foundLine;
+
+dbg.onDebuggerStatement = function(frame) {
+  debugLine = frame.script.getOffsetLocation(frame.offset).lineNumber;
+  frame.onPop = function(c) {
+    foundLine = this.script.getOffsetLocation(this.offset).lineNumber;
+  };
+};
+
+g.eval("f();\n");
+
+// The stop should happen on the closing brace of the function.
+assertEq(foundLine == debugLine + 6, true);