The Tor Browser: js/src/gdb/tests/test-Root-null.py@129ffea94266

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.

     1 # Test printing roots that refer to NULL pointers.

     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.

    16 gdb.execute('set print address on')

    18 run_fragment('Root.null')

    20 assert_pretty('null', '0x0')

The Tor Browser / file revision

js/src/gdb/tests/test-Root-null.py@129ffea94266

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