js/src/jit-test/tests/debug/breakpoint-gc-03.js

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1 // |jit-test| debug
2 // The GC can cope with old and new breakpoints at the same position.
3
4 // This is a regression test for a bug Bill McCloskey found just by looking at
5 // the source code. See bug 677386 comment 8. Here we're testing that the trap
6 // string is correctly marked. (The silly expression for the trap string is to
7 // ensure that it isn't constant-folded; it's harder to get a compile-time
8 // constant to be GC'd.)
9
10 var g = newGlobal();
11 g.eval("var d = 0;\n" +
12 "function f() { return 'ok'; }\n" +
13 "trap(f, 0, Array(17).join('\\n') + 'd++;');\n");
14
15 var dbg = new Debugger;
16 var gw = dbg.addDebuggee(g);
17 var fw = gw.getOwnPropertyDescriptor("f").value;
18 var bp = {hits: 0, hit: function (frame) { this.hits++; }};
19 fw.script.setBreakpoint(0, bp);
20
21 gc();
22
23 g.f();
24 assertEq(g.d, 1);
25 assertEq(bp.hits, 1);

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