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Merge bitcoin/bitcoin#19817: build: macOS toolchain bump

Browse source 
a5550f877a build: use -stdlib++-isystem with Clang 10 (fanquake)
51d9d1607f guix: use Clang 10 for the macOS cross compile (fanquake)
b80a6af9e5 build: no longer patch threading out of ld64 (fanquake)
c29cba44b3 build: Xcode 12.1, macOS SDK 10.15.6 (fanquake)
9ed2f19d38 build: native cctools 973.0.1, ld64 609 (fanquake)
f48f187cce build: Clang 10.0.1 (Hennadii Stepanov)
9b193cd2a3 build: libtapi 1100.0.11 (fanquake)

Pull request description:

  Bumps our macOS toolchain to be using the following:
  * Clang 10.0.1 (gitian) & Clang 10.0.0 (Guix)
  * ld64 609
  * libtapi 1100.0.11
  * cctools  973.0.1
  * Xcode 12.1
  * macOS SDK 10.15.6

  which are currently the most recent releases available as open source. See upstream [`cctools`](https://github.com/tpoechtrager/cctools-port/commits/973.0.1-ld64-609) and [`libtapi`](https://github.com/tpoechtrager/apple-libtapi/tree/1100.0.11).

  This should improve the possibility of Apple ARM cross-compilation in depends.

  This also removes our [patching out of pthreads usage](https://github.com/bitcoin/bitcoin/blob/master/depends/patches/native_cctools/ld64_disable_threading.patch) in `ld64`. There have been multiple changes since `ld64 450.3`, which have likely fixed the non-determinism we were working around. i.e from [InputFiles.cpp](https://opensource.apple.com/source/ld64/ld64-609/src/ld/InputFiles.cpp.auto.html):
  ```cpp
  // <rdar://problem/15002251> make implicit dylib order be deterministic by sorting by install_name
  std::sort(implicitDylibs.begin(), implicitDylibs.end(), DylibByInstallNameSorter());
  ```

  ```cpp
  // <rdar://problem/42675402> ld64 output is not deterministic due to dylib processing order
  std::sort(unprocessedDylibs.begin(), unprocessedDylibs.end(), [](const ld::dylib::File* lhs, const ld::dylib::File* rhs) {
  return strcmp(lhs->path(), rhs->path()) < 0;
  });
  ```

  Guix Build:
  ```bash
  find guix-build-$(git rev-parse --short=12 HEAD)/output/ -type f -print0 | env LC_ALL=C sort -z | xargs -r0 sha256sum
  f6c3817b8fe5f7370299d1ae2533e4a3acd313ba9f9aa8d423a8956117e52dd5  guix-build-a5550f877a2c/output/dist-archive/bitcoin-a5550f877a2c.tar.gz
  4954dcf563c2d496b8d9fecd48f8e3f7fba2f319ffa254a5bc8ee12cfee6acf0  guix-build-a5550f877a2c/output/x86_64-apple-darwin18/bitcoin-a5550f877a2c-osx-unsigned.dmg
  8f6095b445c7f1a8e6accd86bb7f0696d5849402084927d2b726b7d557831c3a  guix-build-a5550f877a2c/output/x86_64-apple-darwin18/bitcoin-a5550f877a2c-osx-unsigned.tar.gz
  cc40f25477b4defc1617ae694313d80f307ddf6742fe6cc85c6bc0e215ef8be0  guix-build-a5550f877a2c/output/x86_64-apple-darwin18/bitcoin-a5550f877a2c-osx64.tar.gz
  ```

  Gitian Build:
  ```bash
  Generating report
  506a8abdefe559999b43dd9f14905b9b2b5a3363b1cd013d45ae47acc1f7ef6c  bitcoin-a5550f877a2c-osx-unsigned.dmg
  f606997f74026dd12d110d683c6f116b40df324836904ef507dd7ac787e6ebe2  bitcoin-a5550f877a2c-osx-unsigned.tar.gz
  5b495ef15f2c3260c2950921b61326912a9bf533cccd51e13818809fd225489e  bitcoin-a5550f877a2c-osx64.tar.gz
  f6c3817b8fe5f7370299d1ae2533e4a3acd313ba9f9aa8d423a8956117e52dd5  src/bitcoin-a5550f877a2c.tar.gz
  9eb0221e962d2839770963bd03c6c9e98e8bf3078566bee2ae42f06233a710fa  bitcoin-core-osx-22-res.yml
  Done.
  ```

ACKs for top commit:
  hebasto:
    ACK a5550f877a

Tree-SHA512: 504c4b0f9cd3b939714a322298320c5bde07e9356a48a9a000060b36f8dce4d6134ed60c3a5188810476a28ec5b108733eabbc6fb8053231b9ea8a494cc91b12
This commit is contained in:
fanquake 2021-05-03 14:01:07 +08:00
commit 77d569ccb5
No known key found for this signature in database
GPG key ID: 2EEB9F5CC09526C1
13 changed files with 32 additions and 132 deletions
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4
ci/test/00_setup_env_mac.sh
View file

@ -10,8 +10,8 @@ export CONTAINER_NAME=ci_macos_cross
export DOCKER_NAME_TAG=ubuntu:20.04 # Check that Focal can cross-compile to macos (Focal is used in the gitian build as well) export DOCKER_NAME_TAG=ubuntu:20.04 # Check that Focal can cross-compile to macos (Focal is used in the gitian build as well)
export HOST=x86_64-apple-darwin18 export HOST=x86_64-apple-darwin18
export PACKAGES="cmake imagemagick librsvg2-bin libz-dev libtiff-tools libtinfo5 python3-setuptools xorriso" export PACKAGES="cmake imagemagick librsvg2-bin libz-dev libtiff-tools libtinfo5 python3-setuptools xorriso"
export XCODE_VERSION=11.3.1 export XCODE_VERSION=12.1
export XCODE_BUILD_ID=11C505 export XCODE_BUILD_ID=12A7403
export RUN_UNIT_TESTS=false export RUN_UNIT_TESTS=false
export RUN_FUNCTIONAL_TESTS=false export RUN_FUNCTIONAL_TESTS=false
export GOAL="deploy" export GOAL="deploy"

2
contrib/gitian-build.py
View file

@ -210,7 +210,7 @@ def main():
args.macos = 'm' in args.os args.macos = 'm' in args.os
# Disable for MacOS if no SDK found # Disable for MacOS if no SDK found
if args.macos and not os.path.isfile('gitian-builder/inputs/Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz'): if args.macos and not os.path.isfile('gitian-builder/inputs/Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz'):
print('Cannot build for MacOS, SDK does not exist. Will build for other OSes') print('Cannot build for MacOS, SDK does not exist. Will build for other OSes')
args.macos = False args.macos = False

4
contrib/gitian-descriptors/gitian-osx.yml
View file

@ -31,7 +31,7 @@ remotes:
- "url": "https://github.com/bitcoin/bitcoin.git" - "url": "https://github.com/bitcoin/bitcoin.git"
"dir": "bitcoin" "dir": "bitcoin"
files: files:
- "Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz" - "Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz"
script: | script: |
set -e -o pipefail set -e -o pipefail
@ -88,7 +88,7 @@ script: |
BASEPREFIX="${PWD}/depends" BASEPREFIX="${PWD}/depends"
mkdir -p ${BASEPREFIX}/SDKs mkdir -p ${BASEPREFIX}/SDKs
tar -C ${BASEPREFIX}/SDKs -xf ${BUILD_DIR}/Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz tar -C ${BASEPREFIX}/SDKs -xf ${BUILD_DIR}/Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz
# Build dependencies for each host # Build dependencies for each host
for i in $HOSTS; do for i in $HOSTS; do

2
contrib/guix/README.md
View file

@ -167,7 +167,7 @@ find output/ -type f -print0 | sort -z | xargs -r0 sha256sum
Set the path where _extracted_ SDKs can be found. This is passed through to Set the path where _extracted_ SDKs can be found. This is passed through to
the depends tree. Note that this is should be set to the _parent_ directory of the depends tree. Note that this is should be set to the _parent_ directory of
the actual SDK (e.g. SDK_PATH=$HOME/Downloads/macOS-SDKs instead of the actual SDK (e.g. SDK_PATH=$HOME/Downloads/macOS-SDKs instead of
$HOME/Downloads/macOS-SDKs/Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers). $HOME/Downloads/macOS-SDKs/Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers).
* _**JOBS**_ * _**JOBS**_

2
contrib/guix/manifest.scm
View file

@ -239,5 +239,5 @@ chain for " target " development."))
((string-contains target "-linux-") ((string-contains target "-linux-")
(list (make-bitcoin-cross-toolchain target))) (list (make-bitcoin-cross-toolchain target)))
((string-contains target "darwin") ((string-contains target "darwin")
(list clang-toolchain-8 binutils imagemagick libtiff librsvg font-tuffy cmake xorriso)) (list clang-toolchain-10 binutils imagemagick libtiff librsvg font-tuffy cmake xorriso))
(else '()))))) (else '())))))

16
contrib/macdeploy/README.md
View file

@ -13,9 +13,9 @@ When complete, it will have produced `Bitcoin-Core.dmg`.
### Step 1: Obtaining `Xcode.app` ### Step 1: Obtaining `Xcode.app`
Our current macOS SDK Our current macOS SDK
(`Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz`) can be (`Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz`) can be
extracted from extracted from
[Xcode_11.3.1.xip](https://download.developer.apple.com/Developer_Tools/Xcode_11.3.1/Xcode_11.3.1.xip). [Xcode_12.1.xip](https://download.developer.apple.com/Developer_Tools/Xcode_12.1/Xcode_12.1.xip).
An Apple ID is needed to download this. An Apple ID is needed to download this.
After Xcode version 7.x, Apple started shipping the `Xcode.app` in a `.xip` After Xcode version 7.x, Apple started shipping the `Xcode.app` in a `.xip`
@ -27,25 +27,25 @@ approach (tested on Debian Buster) is outlined below:
apt install cpio apt install cpio
git clone https://github.com/bitcoin-core/apple-sdk-tools.git git clone https://github.com/bitcoin-core/apple-sdk-tools.git
# Unpack Xcode_11.3.1.xip and place the resulting Xcode.app in your current # Unpack Xcode_12.1.xip and place the resulting Xcode.app in your current
# working directory # working directory
python3 apple-sdk-tools/extract_xcode.py -f Xcode_11.3.1.xip | cpio -d -i python3 apple-sdk-tools/extract_xcode.py -f Xcode_12.1.xip | cpio -d -i
``` ```
On macOS the process is more straightforward: On macOS the process is more straightforward:
```bash ```bash
xip -x Xcode_11.3.1.xip xip -x Xcode_12.1.xip
``` ```
### Step 2: Generating `Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz` from `Xcode.app` ### Step 2: Generating `Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz` from `Xcode.app`
To generate `Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz`, run To generate `Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz`, run
the script [`gen-sdk`](./gen-sdk) with the path to `Xcode.app` (extracted in the the script [`gen-sdk`](./gen-sdk) with the path to `Xcode.app` (extracted in the
previous stage) as the first argument. previous stage) as the first argument.
```bash ```bash
# Generate a Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz from # Generate a Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz from
# the supplied Xcode.app # the supplied Xcode.app
./contrib/macdeploy/gen-sdk '/path/to/Xcode.app' ./contrib/macdeploy/gen-sdk '/path/to/Xcode.app'
``` ```

19
depends/hosts/darwin.mk
View file

@ -1,8 +1,8 @@
OSX_MIN_VERSION=10.14 OSX_MIN_VERSION=10.14
OSX_SDK_VERSION=10.15.1 OSX_SDK_VERSION=10.15.6
XCODE_VERSION=11.3.1 XCODE_VERSION=12.1
XCODE_BUILD_ID=11C505 XCODE_BUILD_ID=12A7403
LD64_VERSION=530 LD64_VERSION=609
OSX_SDK=$(SDK_PATH)/Xcode-$(XCODE_VERSION)-$(XCODE_BUILD_ID)-extracted-SDK-with-libcxx-headers OSX_SDK=$(SDK_PATH)/Xcode-$(XCODE_VERSION)-$(XCODE_BUILD_ID)-extracted-SDK-with-libcxx-headers
@ -60,16 +60,11 @@ $(foreach TOOL,$(cctools_TOOLS),$(eval darwin_$(TOOL) = $$(build_prefix)/bin/$$(
# Explicitly point to our binaries (e.g. cctools) so that they are # Explicitly point to our binaries (e.g. cctools) so that they are
# ensured to be found and preferred over other possibilities. # ensured to be found and preferred over other possibilities.
# #
# -stdlib=libc++ -nostdinc++ -Xclang -cxx-isystem$(OSX_SDK)/usr/include/c++/v1 # -stdlib=libc++ -stdlib++-isystem$(OSX_SDK)/usr/include/c++/v1
# #
# Forces clang to use the libc++ headers from our SDK and completely # Forces clang to use the libc++ headers from our SDK and completely
# forget about the libc++ headers from the standard directories # forget about the libc++ headers from the standard directories
# #
# TODO: Once we start requiring a clang version that has the
# -stdlib++-isystem<directory> flag first introduced here:
# https://reviews.llvm.org/D64089, we should use that instead. Read the
# differential summary there for more details.
#
# -Xclang -*system<path_a> \ # -Xclang -*system<path_a> \
# -Xclang -*system<path_b> \ # -Xclang -*system<path_b> \
# -Xclang -*system<path_c> ... # -Xclang -*system<path_c> ...
@ -109,8 +104,8 @@ darwin_CXX=env -u C_INCLUDE_PATH -u CPLUS_INCLUDE_PATH \
$(clangxx_prog) --target=$(host) -mmacosx-version-min=$(OSX_MIN_VERSION) \ $(clangxx_prog) --target=$(host) -mmacosx-version-min=$(OSX_MIN_VERSION) \
-B$(build_prefix)/bin -mlinker-version=$(LD64_VERSION) \ -B$(build_prefix)/bin -mlinker-version=$(LD64_VERSION) \
-isysroot$(OSX_SDK) \ -isysroot$(OSX_SDK) \
-stdlib=libc++ -nostdinc++ \ -stdlib=libc++ \
-Xclang -cxx-isystem$(OSX_SDK)/usr/include/c++/v1 \ -stdlib++-isystem$(OSX_SDK)/usr/include/c++/v1 \
-Xclang -internal-externc-isystem$(clang_resource_dir)/include \ -Xclang -internal-externc-isystem$(clang_resource_dir)/include \
-Xclang -internal-externc-isystem$(OSX_SDK)/usr/include -Xclang -internal-externc-isystem$(OSX_SDK)/usr/include

9
depends/packages/native_cctools.mk
View file

@ -1,10 +1,9 @@
package=native_cctools package=native_cctools
$(package)_version=55562e4073dea0fbfd0b20e0bf69ffe6390c7f97 $(package)_version=2ef2e931cf641547eb8a68cfebde61003587c9fd
$(package)_download_path=https://github.com/tpoechtrager/cctools-port/archive $(package)_download_path=https://github.com/tpoechtrager/cctools-port/archive
$(package)_file_name=$($(package)_version).tar.gz $(package)_file_name=$($(package)_version).tar.gz
$(package)_sha256_hash=e51995a843533a3dac155dd0c71362dd471597a2d23f13dff194c6285362f875 $(package)_sha256_hash=6b73269efdf5c58a070e7357b66ee760501388549d6a12b423723f45888b074b
$(package)_build_subdir=cctools $(package)_build_subdir=cctools
$(package)_patches=ld64_disable_threading.patch
$(package)_dependencies=native_libtapi $(package)_dependencies=native_libtapi
define $(package)_set_vars define $(package)_set_vars
@ -17,10 +16,6 @@ define $(package)_set_vars
$(package)_cxx=$(clangxx_prog) $(package)_cxx=$(clangxx_prog)
endef endef
define $(package)_preprocess_cmds
patch -p1 < $($(package)_patch_dir)/ld64_disable_threading.patch
endef
define $(package)_config_cmds define $(package)_config_cmds
$($(package)_autoconf) $($(package)_autoconf)
endef endef

10
depends/packages/native_clang.mk
View file

@ -1,9 +1,9 @@
package=native_clang package=native_clang
$(package)_version=8.0.0 $(package)_version=10.0.1
$(package)_download_path=https://releases.llvm.org/$($(package)_version) $(package)_download_path=https://github.com/llvm/llvm-project/releases/download/llvmorg-$($(package)_version)
$(package)_download_file=clang+llvm-$($(package)_version)-x86_64-linux-gnu-ubuntu-14.04.tar.xz $(package)_download_file=clang+llvm-$($(package)_version)-x86_64-linux-gnu-ubuntu-16.04.tar.xz
$(package)_file_name=clang-llvm-$($(package)_version)-x86_64-linux-gnu-ubuntu-14.04.tar.xz $(package)_file_name=clang+llvm-$($(package)_version)-x86_64-linux-gnu-ubuntu-16.04.tar.xz
$(package)_sha256_hash=9ef854b71949f825362a119bf2597f744836cb571131ae6b721cd102ffea8cd0 $(package)_sha256_hash=48b83ef827ac2c213d5b64f5ad7ed082c8bcb712b46644e0dc5045c6f462c231
define $(package)_preprocess_cmds define $(package)_preprocess_cmds
rm -f $($(package)_extract_dir)/lib/libc++abi.so* rm -f $($(package)_extract_dir)/lib/libc++abi.so*

4
depends/packages/native_libtapi.mk
View file

@ -1,9 +1,9 @@
package=native_libtapi package=native_libtapi
$(package)_version=3efb201881e7a76a21e0554906cf306432539cef $(package)_version=664b8414f89612f2dfd35a9b679c345aa5389026
$(package)_download_path=https://github.com/tpoechtrager/apple-libtapi/archive $(package)_download_path=https://github.com/tpoechtrager/apple-libtapi/archive
$(package)_download_file=$($(package)_version).tar.gz $(package)_download_file=$($(package)_version).tar.gz
$(package)_file_name=$($(package)_version).tar.gz $(package)_file_name=$($(package)_version).tar.gz
$(package)_sha256_hash=380c1ca37cfa04a8699d0887a8d3ee1ad27f3d08baba78887c73b09485c0fbd3 $(package)_sha256_hash=62e419c12d1c9fad67cc1cd523132bc00db050998337c734c15bc8d73cc02b61
ifeq ($(strip $(FORCE_USE_SYSTEM_CLANG)),) ifeq ($(strip $(FORCE_USE_SYSTEM_CLANG)),)
$(package)_dependencies=native_clang $(package)_dependencies=native_clang

3
depends/packages/qt.mk
View file

@ -9,7 +9,7 @@ $(package)_qt_libs=corelib network widgets gui plugins testlib
$(package)_patches=fix_qt_pkgconfig.patch mac-qmake.conf fix_no_printer.patch no-xlib.patch $(package)_patches=fix_qt_pkgconfig.patch mac-qmake.conf fix_no_printer.patch no-xlib.patch
$(package)_patches+= fix_android_qmake_conf.patch fix_android_jni_static.patch dont_hardcode_pwd.patch $(package)_patches+= fix_android_qmake_conf.patch fix_android_jni_static.patch dont_hardcode_pwd.patch
$(package)_patches+= drop_lrelease_dependency.patch no_sdk_version_check.patch $(package)_patches+= drop_lrelease_dependency.patch no_sdk_version_check.patch
$(package)_patches+= fix_qpainter_non_determinism.patch fix_lib_paths.patch fix_android_pch.patch $(package)_patches+= fix_lib_paths.patch fix_android_pch.patch
$(package)_patches+= fix_bigsur_drawing.patch qtbase-moc-ignore-gcc-macro.patch $(package)_patches+= fix_bigsur_drawing.patch qtbase-moc-ignore-gcc-macro.patch
$(package)_qttranslations_file_name=qttranslations-$($(package)_suffix) $(package)_qttranslations_file_name=qttranslations-$($(package)_suffix)
@ -227,7 +227,6 @@ define $(package)_preprocess_cmds
patch -p1 -i $($(package)_patch_dir)/fix_android_jni_static.patch && \ patch -p1 -i $($(package)_patch_dir)/fix_android_jni_static.patch && \
patch -p1 -i $($(package)_patch_dir)/fix_android_pch.patch && \ patch -p1 -i $($(package)_patch_dir)/fix_android_pch.patch && \
patch -p1 -i $($(package)_patch_dir)/no-xlib.patch && \ patch -p1 -i $($(package)_patch_dir)/no-xlib.patch && \
patch -p1 -i $($(package)_patch_dir)/fix_qpainter_non_determinism.patch &&\
patch -p1 -i $($(package)_patch_dir)/no_sdk_version_check.patch && \ patch -p1 -i $($(package)_patch_dir)/no_sdk_version_check.patch && \
patch -p1 -i $($(package)_patch_dir)/fix_lib_paths.patch && \ patch -p1 -i $($(package)_patch_dir)/fix_lib_paths.patch && \
patch -p1 -i $($(package)_patch_dir)/fix_bigsur_drawing.patch && \ patch -p1 -i $($(package)_patch_dir)/fix_bigsur_drawing.patch && \

26
depends/patches/native_cctools/ld64_disable_threading.patch
View file

@ -1,26 +0,0 @@
commit 584668415039adeed073decee7e04de28248afd3
Author: fanquake <fanquake@gmail.com>
Date: Tue Aug 18 01:20:24 2020 +0000
Disable threading to fix non-determinism
A bug in the file parser can cause dependencies to be calculated
differently based on which files have already been parsed. This is more
likely to occur on systems with more CPUs.
Just disable threading for now. There is no noticeable slowdown.
See #9891.
diff --git a/cctools/ld64/src/ld/InputFiles.h b/cctools/ld64/src/ld/InputFiles.h
index ef9c756..90a70b6 100644
--- a/cctools/ld64/src/ld/InputFiles.h
+++ b/cctools/ld64/src/ld/InputFiles.h
@@ -25,7 +25,6 @@
#ifndef __INPUT_FILES_H__
#define __INPUT_FILES_H__
-#define HAVE_PTHREADS 1
#include <stdlib.h>
#include <sys/types.h>

63
depends/patches/qt/fix_qpainter_non_determinism.patch
View file

@ -1,63 +0,0 @@
commit 2a8f7dc6ddfc414a66491522501c1574a1343ee1
Author: Andrew Chow <achow101-github@achow101.com>
Date: Sat Nov 21 01:11:04 2020 -0500
build: Fix determinism issue when building with Clang 8
When building Qt with LLVM/Clang 8 under -O3 (the default), we run into
a determinism issue in `qt_interset_spans`. The issue has been fixed for
LLVM/Clang 9, see
https://github.com/llvm/llvm-project/commit/db101864bdc938deb1d63fe4f7da761bd38e5cae
and https://reviews.llvm.org/D64601, however this fix was not backported
to 8.x. Once LLVM/Clang 9 is used, this patch can be dropped.
The particular issue appears to be an optimization done by -O3 which
adds a temporary variable for `spans->y` in `qt_intersect_spans`. When
it does this, sometimes it chooses to use a 32-bit movs instruction
(movswl), and other times it chooses a 64-bit movs instruction (movswq).
By patching `qt_intersect_spans` to always make a temporary variable for
`spans->y`, we are able to sidestep this problem.
diff --git a/qtbase/src/gui/painting/qpaintengine_raster.cpp b/qtbase/src/gui/painting/qpaintengine_raster.cpp
index 92ab6e8375..f018009e0b 100644
--- a/qtbase/src/gui/painting/qpaintengine_raster.cpp
+++ b/qtbase/src/gui/painting/qpaintengine_raster.cpp
@@ -4128,22 +4128,23 @@ static const QSpan *qt_intersect_spans(const QClipData *clip, int *currentClip,
const QSpan *clipEnd = clip->m_spans + clip->count;
while (available && spans < end ) {
+ const short spans_y = spans->y;
if (clipSpans >= clipEnd) {
spans = end;
break;
}
- if (clipSpans->y > spans->y) {
+ if (clipSpans->y > spans_y) {
++spans;
continue;
}
- if (spans->y != clipSpans->y) {
- if (spans->y < clip->count && clip->m_clipLines[spans->y].spans)
- clipSpans = clip->m_clipLines[spans->y].spans;
+ if (spans_y != clipSpans->y) {
+ if (spans_y < clip->count && clip->m_clipLines[spans_y].spans)
+ clipSpans = clip->m_clipLines[spans_y].spans;
else
++clipSpans;
continue;
}
- Q_ASSERT(spans->y == clipSpans->y);
+ Q_ASSERT(spans_y == clipSpans->y);
int sx1 = spans->x;
int sx2 = sx1 + spans->len;
@@ -4162,7 +4163,7 @@ static const QSpan *qt_intersect_spans(const QClipData *clip, int *currentClip,
if (len) {
out->x = qMax(sx1, cx1);
out->len = qMin(sx2, cx2) - out->x;
- out->y = spans->y;
+ out->y = spans_y;
out->coverage = qt_div_255(spans->coverage * clipSpans->coverage);
++out;
--available;