Author: hans
Date: Mon Feb 25 08:06:37 2019
New Revision: 354794
URL: http://llvm.org/viewvc/llvm-project?rev=354794&view=rev
Log:
ReleaseNotes: drop mention of -ftrivial-auto-var-init=zero
Modified:
cfe/branches/release_80/docs/ReleaseNotes.rst
Modified: cfe/branches/release_80/docs/ReleaseNotes.rst
URL:
http://llvm.org/viewvc/llvm-project/cfe/branches/release_80/docs/ReleaseNotes.rst?rev=354794&r1=354793&r2=354794&view=diff
==============================================================================
--- cfe/branches/release_80/docs/ReleaseNotes.rst (original)
+++ cfe/branches/release_80/docs/ReleaseNotes.rst Mon Feb 25 08:06:37 2019
@@ -41,7 +41,7 @@ Major New Features
example, due to renaming a class or namespace).
See the :ref:`UsersManual <profile_remapping>` for details.
-- Clang has new options to initialize automatic variables with either a
pattern or with zeroes. The default is still that automatic variables are
uninitialized. This isn't meant to change the semantics of C and C++. Rather,
it's meant to be a last resort when programmers inadvertently have some
undefined behavior in their code. These options aim to make undefined behavior
hurt less, which security-minded people will be very happy about. Notably, this
means that there's no inadvertent information leak when:
+- Clang has new options to initialize automatic variables with a pattern. The
default is still that automatic variables are uninitialized. This isn't meant
to change the semantics of C and C++. Rather, it's meant to be a last resort
when programmers inadvertently have some undefined behavior in their code.
These options aim to make undefined behavior hurt less, which security-minded
people will be very happy about. Notably, this means that there's no
inadvertent information leak when:
* The compiler re-uses stack slots, and a value is used uninitialized.
@@ -65,8 +65,6 @@ Major New Features
* ``-ftrivial-auto-var-init=pattern``
- * ``-ftrivial-auto-var-init=zero``
``-enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang``
-
There is also a new attribute to request a variable to not be initialized,
mainly to disable initialization of large stack arrays when deemed too
expensive:
* ``int dont_initialize_me __attribute((uninitialized));``
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