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comparison: js/src/gdb/tests/test-Root-null.py
js/src/gdb/tests/test-Root-null.py
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| -1:000000000000 | 0:fb9703dde8be |
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| 1 # Test printing roots that refer to NULL pointers. | |
| 2 | |
| 3 # Since mozilla.prettyprinters.Pointer declines to create pretty-printers | |
| 4 # for null pointers, GDB built-in printing code ends up handling them. But | |
| 5 # as of 2012-11, GDB suppresses printing pointers in replacement values: | |
| 6 # see: http://sourceware.org/ml/gdb/2012-11/msg00055.html | |
| 7 # | |
| 8 # Thus, if the pretty-printer for JS::Rooted simply returns the referent as | |
| 9 # a replacement value (which seems reasonable enough, if you want the | |
| 10 # pretty-printer to be completely transparent), and the referent is a null | |
| 11 # pointer, it prints as nothing at all. | |
| 12 # | |
| 13 # This test ensures that the JS::Rooted pretty-printer doesn't make that | |
| 14 # mistake. | |
| 15 | |
| 16 gdb.execute('set print address on') | |
| 17 | |
| 18 run_fragment('Root.null') | |
| 19 | |
| 20 assert_pretty('null', '0x0') |
