js/src/gdb/tests/test-Root-null.py@6474c204b198 (annotated)
js/src/gdb/tests/test-Root-null.py
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | # Test printing roots that refer to NULL pointers. |
| michael@0 | 2 | |
| michael@0 | 3 | # Since mozilla.prettyprinters.Pointer declines to create pretty-printers |
| michael@0 | 4 | # for null pointers, GDB built-in printing code ends up handling them. But |
| michael@0 | 5 | # as of 2012-11, GDB suppresses printing pointers in replacement values: |
| michael@0 | 6 | # see: http://sourceware.org/ml/gdb/2012-11/msg00055.html |
| michael@0 | 7 | # |
| michael@0 | 8 | # Thus, if the pretty-printer for JS::Rooted simply returns the referent as |
| michael@0 | 9 | # a replacement value (which seems reasonable enough, if you want the |
| michael@0 | 10 | # pretty-printer to be completely transparent), and the referent is a null |
| michael@0 | 11 | # pointer, it prints as nothing at all. |
| michael@0 | 12 | # |
| michael@0 | 13 | # This test ensures that the JS::Rooted pretty-printer doesn't make that |
| michael@0 | 14 | # mistake. |
| michael@0 | 15 | |
| michael@0 | 16 | gdb.execute('set print address on') |
| michael@0 | 17 | |
| michael@0 | 18 | run_fragment('Root.null') |
| michael@0 | 19 | |
| michael@0 | 20 | assert_pretty('null', '0x0') |
