js/src/gdb/tests/test-Root-null.py

Sat, 03 Jan 2015 20:18:00 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Sat, 03 Jan 2015 20:18:00 +0100
branch
TOR_BUG_3246
changeset 7
129ffea94266
permissions
-rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

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')

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