Allow new clang compiler warnings until they are
fixed or suppressed in all branches.
Bug: 145916209
Test: make checkbuild
Change-Id: Ic873b8d705dacd0d92f9031b3960e01283090363
Pattern initialization helps us make C++ safer, while not altering the
semantics/usage of C++ (as zero init does).
Bug: 131390872
Test: Local testing. Parts of CTS.
Change-Id: Ic4af9260a48c10cbd70315fa56d6b01c5ca61768
This lets us test uninitialized variables even if we change the defaults
for -ftrivial-auto-var-init.
Bug: 131390872
Test: AUTO_UNINITIALIZE=true m
Change-Id: I2b4473a0547dc9c4d9f081d8af2d283f17f66f7a
Pattern initialization helps us make C++ safer, while not altering the
semantics/usage of C++ (as zero init does).
Bug: 131390872
Test: Local testing. Parts of CTS.
Change-Id: I9705ca3b724208647f0eab0a704f6f360206d482
Instead of linking the unwinder statically into every binary, link it
dynamically, by exporting the symbols from libc.so. This has a number
of advantages:
- Reduces image size (system.img size decreases by 1.7MB on walleye-userdebug,
and 1.2MB on crosshatch-userdebug).
- Allows us to easily change/upgrade the unwinder throughout the system,
including vendor prebuilts.
- Allows code outside of libc++ to define custom personality routines.
Previously, personality routines would call the unwinder routines in the
local binary, which would cause problems with unwinders with global state
(such as the libgcc unwinder) if the copy of the unwinder used for unwinding
(normally libc++'s copy) were different from the copy linked against the
personality routine.
Bug: 144430859
Change-Id: I3b2a4a3ee58c6777989f811e19a3aeb47c0945bd
This reverts commit 862eb4648a.
Re-upgrades the compiler to clang-r370808, after first dealing with
regressions in ndk_translate and execute only pages.
Bug: 139945549
Bug: 145807809
Bug: 145827049
Bug: 145825270
Test: atest \
CtsSelinuxTargetSdk27TestCases:android.security.SELinuxTargetSdkTest#testNoExecuteOnly
Test: m ndk_translation_host_unit_tests && \
./out/host/linux-x86/nativetest/ndk_translation_host_unit_tests/ndk_translation_host_unit_tests
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Change-Id: I714b582faffa8c92384818a7b12338d621968548
The use of pragma pack(1) affects the packed-ness of every struct
definition that follows it in the translation unit, even in following
header files. This can lead to multiple translation units disagreeing
on whether a struct is packed.
Enable the warnings (as errors) that help spot this problem.
Bug: http://b/73971777
Test: treehugger
Change-Id: Id3096f35dff5dc8723d30d1305f1ed7ae8190a32
-Wc99-designators warns for the use of nested and array initializers in
C++20 code. Many internal projects have pushed back against this
warning.
Disables:
- -Wimplicit-int-float-conversion
- -Wpointer-compare
- -Wxor-used-as-pow
- -Wfinal-dtor-non-final-class
- -Wreorder-init-list
For projects under external/, vendor/, etc, but only if they use
Android.bp (not Android.mk) and -Wreorder-init-list may be re-enabled by
-Wall if set locally.
-Wno-incomplete-setjmp-declaration is needed for NDK stubs that get
generated (functions without full definitions of their parameters).
Sets
- -Wno-error=implicit-int-float-conversion
- -Wno-error=reorder-init-list
for all projects in order to unblock landing the compiler upgrade due to
internal projects not being able to disable or fix these before the
upgrade.
Bug: 139945549
Test: build (aosp_crosshatch, crosshatch, aosp_x86_64-eng,
walleye), boot internal devices, bionic + RS atests, kernel builds.
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Change-Id: I18e3c0eb657fd59824526f36c6dd57bdcf0526ba
Recently, we started deferring to clang for some of its built-in
FORTIFY-like warnings. We should always treat these as errors, since
they represent potential security vulnerabilities.
Bug: 131861088
Test: m. Also made a compilation in Bionic fail; verified the build
command had -Werror=fortify-source in it.
Change-Id: I2715ea411ef067f801534dab4d306fef5431f290
Instead of just making this an error when building for the device, also
turn on this error for host builds. This is more important as we begin
to use remote caches during the build.
Test: treehugger
Change-Id: I6fcc945464032d951729aead540ea77850c88c41
Bug: 130267141
Test: All system shared libraries do not contain global _Unwind_XXX symbols.
Change-Id: I79673753bb8197041bfe8ffb016d9f5fdf4cada5
Merged-In: I79673753bb8197041bfe8ffb016d9f5fdf4cada5
(cherry picked from commit cf78867417)
Looks like the reason for it existing has been fixed. It should probably
just be removed.
Bug: None
Test: WITH_TIDY=1 m
Change-Id: I770b2fec4ac44f265ff31731c9c0bd4da14d5b0f
Bug: http://b/122481018
The '-keep' option of llvm-strip has changed to '-keep-section'. Update
scripts/strip.sh accordingly.
Test: Tested on various targets in AOSP and internal branch. Googlers
see http://go/clang-r349610-testing
Change-Id: Ibfc97ecdcdc305c97a4169cead1e1e3cddda9c4c
This CL adds configs for the arm64 and x64 fuchsia
device targets, sets up the necessary linker flags,
and disables some functionality that is not currently
supported on Fuchsia.
Bug: 119831161
Test: Compile walleye, internal validation against
fuchsia_arm64-eng and fuchsia_x86_64-eng.
Change-Id: I2881b99d2e3a1995e2d8c00a2d86ee101a972c94
This cherry-pick update picks up a few patches to improve hwasan, ELF
tls, and LLD for kernel builds.
Bug: http://b/122549771
Test: make checkbuild, boot
Change-Id: I8a90282af41ad4c74df819484ba2c3507e20100f
* Add -fno-sanitize=implicit-integer-sign-change when
there is any integer related sanitizer, and this check
is not explicitly specified.
Android core does not boot with this new sanitizer yet.
* Filter out -fno-sanitize=implicit-integer-sign-change
from tooling flags.
Bug: 119329758
Bug: 119557795
Test: make checkbuild, boot, go/clang-r346389-testing
Change-Id: I709de569cb73d070fc4958e2b4387f4041bc5438
This patch fixes an issue that SHR_RELR relocation is not supported by
SDK version earlier than API 28. We only turn it on when SDK is not
used, or SDK version is newer than or equal to API 28.
Test: m -j48 for aosp_taimen-userdebug
Bug: http://b/119086751
Change-Id: I33124ae4f35fb8c00ae9103e8c04e2d4ccd5fec3
Bug: http://b/119270185
This prebuilt has a cherry-pick to fix PGO instrumentation.
Test: m ANDROID_PGO_INSTRUMENT=all,
Build and boot a few devices in internal branch.
Change-Id: I97ca17fbc039a17db57b2749a1adf2ef981c5918
This reverts commit b18814e7a4.
Reason for revert: The originating bug is now fixed.
Test: make checkbuild
Change-Id: Iabcfbeed5977336fc27fb1ccbad269c1fa81ef6e
llvm-ar takes a --plugin argument but it is ignored for compatibility,
so passing it has no effect.
Change-Id: I4fc51d226d66cf2a43462d3d4ccc12e6e5ebb226
Bug: 111759196
Test: Test various targets in AOSP and internal branches.
For Googlers, go/clang-r344140-testing
Change-Id: I70fc5a2824de698d78c95ce2acd42eff9c5ebe15
Proposal for adding SHT_RELR sections in the generic-abi is at
https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg
This CL requires clang-r328903.
The following test results are on clang-r339409.
Size comparison for "aosp_marlin-userdebug":
$ du -B1 -s {none,pack,relr,both}/out/target/product/marlin/system
1014616064 none/out/target/product/marlin/system
1001074688 pack/out/target/product/marlin/system
1004273664 relr/out/target/product/marlin/system
1000099840 both/out/target/product/marlin/system
none contains a build with no packing (--pack-dyn-relocs=none).
pack contains a build with current settings (--pack-dyn-relocs=android).
relr contains a build with relr packing only (--pack-dyn-relocs=relr).
both contains a build with both options enabled (--pack-dyn-relocs=android+relr).
With --pack-dyn-relocs=android+relr, lld will encode the relative
relocations in a SHT_ANDROID_RELR section, and pack the rest of
the dynamic relocations in a SHT_ANDROID_REL(A) section.
--pack-dyn-relocs=android was saving us 13,541,376 bytes (1.35%) (none - pack).
--pack-dyn-relocs=relr will save us 10,342,400 bytes (1.03%) (none - relr).
--pack-dyn-relocs=android+relr is saving us 14,516,224 bytes (1.45%) (none - both).
Size comparison for the "system/bin" directory:
$ du -B1 -s {none,pack,relr,both}/out/target/product/marlin/system/bin
29413376 none/out/target/product/marlin/system/bin
28319744 pack/out/target/product/marlin/system/bin
28258304 relr/out/target/product/marlin/system/bin
28180480 both/out/target/product/marlin/system/bin
--pack-dyn-relocs=android was saving us 1,093,632 bytes (3.72%) (none - pack).
--pack-dyn-relocs=relr will save us 1,155,072 bytes (3.93%) (none - relr).
--pack-dyn-relocs=android+relr is saving us 1,232,896 bytes (4.19%) (none - both).
Bug: None
Test: Built aosp_marlin-userdebug image, boots on device.
Test: Built aosp_x86_64-userdebug image, boots in emulator.
Change-Id: Ibb726c3b9d87688f387a7f2974fdae9bfc24efc9
Clang is always used now, so we can remove all the GCC checks. Removing
GCC-specific configuration will happen in the next CL.
Test: m
Change-Id: I4835ecf6062159315d0dfb07b098e60bff033a8a
This also changes over llvm-strip to use the -o flag, rather than
relying on nonstandard (and no longer functional) positional arguments.
Bug: http://b/111998531
Test: Multiple new builds. For googlers - http://go/clang-r339409-testing
Change-Id: I8c82d06304af24a001e6552e36e2f540d8e364ce
* PATH_TO_CLANG_TIDY_SHELL is ${config.ClangTidyShellPath},
wich is "build/soong/scripts/clang-tidy.sh"
Bug: 110538415
Test: build with WITH_TIDY=1
Change-Id: I27d7be095c998583fa9ad4d705aa1332bd018140
