[tor-commits] [tor/master] Actually add HowToReview.txt

[nickm@xxxxxxxxxxxxxx]

commit 2929986049780bd28fb39ae8d0a67e703e5193ef
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Thu Oct 22 10:03:04 2015 -0400

    Actually add HowToReview.txt
---
 doc/HACKING/HowToReview.txt |   85 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)

diff --git a/doc/HACKING/HowToReview.txt b/doc/HACKING/HowToReview.txt
new file mode 100644
index 0000000..1380411
--- /dev/null
+++ b/doc/HACKING/HowToReview.txt
@@ -0,0 +1,85 @@
+How to review a patch
+=====================
+
+Some folks have said that they'd like to review patches more often, but they
+don't know how.
+
+So, here are a bunch of things to check for when reviewing a patch!
+
+Note that if you can't do every one of these, that doesn't mean you can't do
+a good review!  Just make it clear what you checked for and what you didn't.
+
+
+Top-level smell-checks
+----------------------
+
+(Difficulty: easy)
+
+Does it compile with --enable-gcc-warnings?
+
+Does 'make check-spaces' pass?
+
+Does it have a reasonable amount of tests?  Do they pass?  Do they leak
+memory?
+
+Do all the new functions, global variables, types, and structure members have
+documentation?
+
+Do all the the functions, global variables, types, and structure members with
+modified behavior have modified documentation?
+
+Do all the new torrc options have documentation?
+
+If this changes Tor's behavior on the wire, is there a design proposal?
+
+
+
+Let's look at the code!
+-----------------------
+
+Does the code conform to CodingStandards.txt?
+
+Does the code leak memory?
+
+If two or more pointers ever point to the same object, is it clear which
+pointer "owns" the object?
+
+Are all allocated resources freed?
+
+Are all pointers that should be const, const?
+
+Are #defines used for 'magic' numbers?
+
+Can you understand what the code is trying to do?
+
+Can you convince yourself that the code really does that?
+
+Is there duplicated code that could be turned into a function?
+
+
+Let's look at the documentation!
+--------------------------------
+
+Does the documentation confirm to CodingStandards.txt?
+
+Does it make sense?
+
+Can you predict what the function will do from its documentation?
+
+
+Let's think about security!
+---------------------------
+
+If there are any arrays, buffers, are you 100% sure that they cannot
+overflow?
+
+If there is any integer math, can it overflow or underflow?
+
+If there are any allocations, are you sure there are corresponding
+deallocations?
+
+Is there a safer pattern that could be used in any case?
+
+Have they used one of the Forbidden Functions?
+
+(Also see your favorite secure C programming guides.)

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