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Jules Villard 6364199b94 [pulse] traces record how values were constructed ... Summary: Before: the trace would explain how a value was invalidated and accessed, but not how the value that was invalidated had been constructed. Now: `PulseTrace.t` records breadcrumbs of how the value was constructed in addition to the interproc "action" trace leading to the invalidation or access action. Concretely: ``` void bad(X &x) { X *y = x; X *z = x; delete y; access(z); } ``` will produce the trace: Invalidation part: y = x delete y Access part: z = x access(z) access to z->f inside of access(z) Before this diff the "Access part" would be missing the "z = x" part of the trace, so it might be confusing why `z` has anything to do with `y`. However, such "breadcrumbs" are not recorded in the inter-procedural part, only the sequence of calls is. This is a trade-off for simplicity, maybe it's enough for developers maybe it isn't, we'll find out later. Reviewed By: jberdine Differential Revision: D15354438 fbshipit-source-id: 8d0aed717		6 years ago
..
Makefile	[pulse] copy tests from ownership	6 years ago
basics.cpp	[pulse] do not destroy `this` even if asked to	6 years ago
closures.cpp	[pulse] better treatment of variables going out of scope	6 years ago
deduplication.cpp	[pulse] improve error messages and traces	6 years ago
interprocedural.cpp	[pulse] improve error messages and traces	6 years ago
issues.exp	[pulse] traces record how values were constructed	6 years ago
join.cpp	[pulse] more efficient representation of attributes	6 years ago
reference_wrapper.cpp	[pulse] tighten up summaries	6 years ago
returns.cpp	[pulse][interproc 3/3] interproc call	6 years ago
temporaries.cpp	[pulse] Example of use after destructor for temporaries	6 years ago
use_after_delete.cpp	[pulse][interproc 3/3] interproc call	6 years ago
use_after_destructor.cpp	[pulse] be more careful about what to consider as a variable going out of scope	6 years ago
use_after_free.cpp	[pulse] apply summaries to globals too	6 years ago
vector.cpp	[pulse] tighten up summaries	6 years ago