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author | Hans Wennborg <hans@hanshq.net> | 2019-02-25 16:06:37 +0000 |
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committer | Hans Wennborg <hans@hanshq.net> | 2019-02-25 16:06:37 +0000 |
commit | c19ff55635053603a0f1a9578e770822def617cc (patch) | |
tree | ea45e2a7999b9cb89037022b4ac80f045f9e4018 | |
parent | 90903f44d639117b8c57d061291f4ea2b542bd83 (diff) |
ReleaseNotes: drop mention of -ftrivial-auto-var-init=zero
git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_80@354794 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r-- | docs/ReleaseNotes.rst | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst index 4c593977e2..54a7a4c1b9 100644 --- a/docs/ReleaseNotes.rst +++ b/docs/ReleaseNotes.rst @@ -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));`` |