1// Copyright 2008 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
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11//       with the distribution.
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13//       contributors may be used to endorse or promote products derived
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15//
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26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28// Check that dynamically introducing conflicting consts/vars
29// is silently ignored (and does not lead to exceptions).
30
31var caught = 0;
32
33eval("const a");
34try { eval("var a"); } catch (e) { caught++; assertTrue(e instanceof TypeError); }
35assertTrue(typeof a == 'undefined');
36try { eval("var a = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); }
37assertTrue(typeof a == 'undefined');
38
39eval("const b = 0");
40try { eval("var b"); } catch (e) { caught++; assertTrue(e instanceof TypeError); }
41assertEquals(0, b);
42try { eval("var b = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); }
43assertEquals(0, b);
44assertEquals(0, caught);
45
46eval("var c");
47try { eval("const c"); } catch (e) { caught++; assertTrue(e instanceof TypeError); }
48assertTrue(typeof c == 'undefined');
49assertEquals(1, caught);
50try { eval("const c = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); }
51assertEquals(undefined, c);
52assertEquals(2, caught);
53
54eval("var d = 0");
55try { eval("const d"); } catch (e) { caught++; assertTrue(e instanceof TypeError); }
56assertEquals(0, d);
57assertEquals(3, caught);
58try { eval("const d = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); }
59assertEquals(0, d);
60assertEquals(4, caught);
61