N5N3 · N5N3 · Sep 30, 2021 · Sep 30, 2021 · Sep 30, 2021 · Sep 30, 2021
diff --git a/.buildkite/pipelines/experimental/launch_unsigned_builders.yml b/.buildkite/pipelines/experimental/launch_unsigned_builders.yml
@@ -1,6 +1,6 @@
 steps:
   - label: ":buildkite: Launch unsigned pipelines"
     commands: |
-      buildkite-agent pipeline upload .buildkite/pipelines/experimental/misc/sanitizers.yml
+      true
     agents:
       queue: julia
diff --git a/.buildkite/pipelines/experimental/misc/sanitizers.yml b/.buildkite/pipelines/experimental/misc/sanitizers.yml
diff --git a/.buildkite/pipelines/main/launch_unsigned_builders.yml b/.buildkite/pipelines/main/launch_unsigned_builders.yml
@@ -13,18 +13,21 @@
 # something about the privileged steps.
 
 steps:
-  - label: ":buildkite: Launch unsigned builders"
+  - label: ":buildkite: Launch unsigned jobs"
     commands: |
-      # Launch the `whitespace` builder first, because we want that builder to finish as quickly as possible.
-      buildkite-agent pipeline upload .buildkite/pipelines/main/misc/whitespace.yml
-
-      # Launch the miscellaneous builders in alphabetical order.
+      # Launch the miscellaneous jobs in alphabetical order.
       buildkite-agent pipeline upload .buildkite/pipelines/main/misc/doctest.yml
       buildkite-agent pipeline upload .buildkite/pipelines/main/misc/embedding.yml
       buildkite-agent pipeline upload .buildkite/pipelines/main/misc/llvmpasses.yml
+      buildkite-agent pipeline upload .buildkite/pipelines/main/misc/sanitizers.yml
 
-      # Launch all of the platform builders.
+      # Launch all of the platform jobs.
       bash .buildkite/pipelines/main/platforms/platforms.sh package_linux
       bash .buildkite/pipelines/main/platforms/platforms.sh tester_linux
+
+      # Launch the `whitespace` job last. Uploading it last actually causes it to start
+      # first. We want this job to start first because we want it to finish as quickly
+      # as possible.
+      buildkite-agent pipeline upload .buildkite/pipelines/main/misc/whitespace.yml
     agents:
       queue: julia
diff --git a/.buildkite/pipelines/main/misc/doctest.yml b/.buildkite/pipelines/main/misc/doctest.yml
@@ -8,7 +8,9 @@ steps:
     key: doctest
     plugins:
       - JuliaCI/julia#v1:
-          version: 1.6
+          # Drop default "registries" directory, so it is not persisted from execution to execution
+          persist_depot_dirs: packages,artifacts,compiled
+          version: '1.6'
       - staticfloat/sandbox#v1:
           rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/v3.1/package_linux.x86_64.tar.gz
           rootfs_treehash: "8c33c341a864852629b8aac01a6eb6a79b73570e"

diff --git a/.buildkite/pipelines/main/misc/embedding.yml b/.buildkite/pipelines/main/misc/embedding.yml
@@ -8,7 +8,9 @@ steps:
     key: "embedding"
     plugins:
       - JuliaCI/julia#v1:
-          version: 1.6
+          # Drop default "registries" directory, so it is not persisted from execution to execution
+          persist_depot_dirs: packages,artifacts,compiled
+          version: '1.6'
       - staticfloat/sandbox#v1:
           rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/v3.1/package_linux.x86_64.tar.gz
           rootfs_treehash: "8c33c341a864852629b8aac01a6eb6a79b73570e"

diff --git a/.buildkite/pipelines/main/misc/llvmpasses.yml b/.buildkite/pipelines/main/misc/llvmpasses.yml
@@ -8,7 +8,9 @@ steps:
     key: "analyzegc"
     plugins:
       - JuliaCI/julia#v1:
-          version: 1.6
+          # Drop default "registries" directory, so it is not persisted from execution to execution
+          persist_depot_dirs: packages,artifacts,compiled
+          version: '1.6'
       - staticfloat/sandbox#v1:
           rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/v3.1/llvm_passes.x86_64.tar.gz
           rootfs_treehash: "9dd715500b117a16fcfa419ea0bca0c0ca902cee"
@@ -26,7 +28,9 @@ steps:
     key: "llvmpasses"
     plugins:
       - JuliaCI/julia#v1:
-          version: 1.6
+          # Drop default "registries" directory, so it is not persisted from execution to execution
+          persist_depot_dirs: packages,artifacts,compiled
+          version: '1.6'
       - staticfloat/sandbox#v1:
           rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/v3.8/package_linux.x86_64.tar.gz
           rootfs_treehash: "84a323ae8fcc724f8ea5aca5901bbbf4bda3e519"

diff --git a/.buildkite/pipelines/main/misc/sanitizers.yml b/.buildkite/pipelines/main/misc/sanitizers.yml
@@ -0,0 +1,46 @@
+agents:
+  queue: "julia"
+  # Only run on `sandbox.jl` machines (not `docker`-isolated ones) since we need nestable sandboxing
+  sandbox.jl: "true"
+  os: "linux"
+steps:
+  - label: "asan"
+    key: "asan"
+    plugins:
+      - JuliaCI/julia#v1:
+          # Drop default "registries" directory, so it is not persisted from execution to execution
+          persist_depot_dirs: packages,artifacts,compiled
+          version: '1.6'
+      - staticfloat/sandbox#v1:
+          rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/v3.1/llvm_passes.x86_64.tar.gz
+          rootfs_treehash: "9dd715500b117a16fcfa419ea0bca0c0ca902cee"
+          uid: 1000
+          gid: 1000
+          workspaces:
+            - "/cache/repos:/cache/repos"
+    timeout_in_minutes: 120
+    if: | # We only run the `asan` job on Julia 1.8 and later.
+      (pipeline.slug != "julia-release-1-dot-6") && (pipeline.slug != "julia-release-1-dot-7")
+    commands: |
+      echo "--- Build julia-debug with ASAN"
+      contrib/asan/build.sh ./tmp/test-asan -j$${JULIA_CPU_THREADS:?} debug
+  - label: "tsan"
+    key: "tsan"
+    plugins:
+      - JuliaCI/julia#v1:
+          # Drop default "registries" directory, so it is not persisted from execution to execution
+          persist_depot_dirs: packages,artifacts,compiled
+          version: '1.6'
+      - staticfloat/sandbox#v1:
+          rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/v3.1/llvm_passes.x86_64.tar.gz
+          rootfs_treehash: "9dd715500b117a16fcfa419ea0bca0c0ca902cee"
+          uid: 1000
+          gid: 1000
+          workspaces:
+            - "/cache/repos:/cache/repos"
+    timeout_in_minutes: 120
+    if: | # We only run the `tsan` job on Julia 1.8 and later.
+      (pipeline.slug != "julia-release-1-dot-6") && (pipeline.slug != "julia-release-1-dot-7")
+    commands: |
+      echo "--- Build julia-debug runtime with TSAN"
+      contrib/tsan/build.sh ./tmp/test-tsan -j$${JULIA_CPU_THREADS:?} julia-src-debug
diff --git a/.buildkite/pipelines/main/misc/whitespace.yml b/.buildkite/pipelines/main/misc/whitespace.yml
@@ -8,7 +8,9 @@ steps:
     key: "whitespace"
     plugins:
       - JuliaCI/julia#v1:
-          version: 1.6
+          # Drop default "registries" directory, so it is not persisted from execution to execution
+          persist_depot_dirs: packages,artifacts,compiled
+          version: '1.6'
       - staticfloat/sandbox#v1:
           rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/v3.1/package_linux.x86_64.tar.gz
           rootfs_treehash: "8c33c341a864852629b8aac01a6eb6a79b73570e"

diff --git a/.buildkite/pipelines/main/platforms/package_linux.arches b/.buildkite/pipelines/main/platforms/package_linux.arches
@@ -1,6 +1,7 @@
-# ARCH      ARCH_LABEL      ROOTFS_ARCH      TIMEOUT      ROOTFS_TAG      ROOTFS_TREE
-# aarch64   aarch64         aarch64          60           v3.2            0566841e29f0f9880541c26a6595fd5ce0beb5ff
-# armv7l    armv7l          armv7l           60           v3.2            fb359370b052a47ce5c84cc6b4a7a03ed7053b25
-32          32              i686             60           v3.2            209c4db679a515befd7fb50ecc6bfbecf7ec3d32
-# ppc64le   ppc64le         powerpc64le      60           v3.2            c03a0158b19d48ac84b426834fce0d3584cdd0c7
-64          64              x86_64           60           v3.2            474bf61a926b2d7fcf202284d59d4b11a04601d7
+# PLATFORM      ARCH        ARCH_LABEL      ROOTFS_ARCH      ALLOW_FAIL      TIMEOUT      ROOTFS_TAG      ROOTFS_TREE
+# linux         aarch64     aarch64         aarch64          false           60           v3.2            0566841e29f0f9880541c26a6595fd5ce0beb5ff
+# linux         armv7l      armv7l          armv7l           false           60           v3.2            fb359370b052a47ce5c84cc6b4a7a03ed7053b25
+linux           32          32              i686             false           60           v3.2            209c4db679a515befd7fb50ecc6bfbecf7ec3d32
+# linux         ppc64le     ppc64le         powerpc64le      false           60           v3.2            c03a0158b19d48ac84b426834fce0d3584cdd0c7
+linux           64          64              x86_64           false           60           v3.2            474bf61a926b2d7fcf202284d59d4b11a04601d7
+musl            64          64              x86_64           false           60           v3.19           e6a2730e37c386c46915b2650d6aaaa398195152
diff --git a/.buildkite/pipelines/main/platforms/package_linux.yml b/.buildkite/pipelines/main/platforms/package_linux.yml
@@ -4,15 +4,15 @@ agents:
   sandbox.jl: "true"
   os: "linux"
 steps:
-  - label: "package_linux${ARCH_LABEL?}"
-    key: package_linux${ARCH_LABEL?}
+  - label: "package_${PLATFORM?}${ARCH_LABEL?}"
+    key: package_${PLATFORM?}${ARCH_LABEL?}
     plugins:
       - JuliaCI/julia#v1:
           # Drop default "registries" directory, so it is not persisted from execution to execution
           persist_depot_dirs: packages,artifacts,compiled
-          version: 1.6
+          version: '1.6'
       - staticfloat/sandbox#v1:
-          rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/${ROOTFS_TAG?}/package_linux.${ROOTFS_ARCH?}.tar.gz
+          rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/${ROOTFS_TAG?}/package_${PLATFORM?}.${ROOTFS_ARCH?}.tar.gz
           rootfs_treehash: "${ROOTFS_TREE?}"
           uid: 1000
           gid: 1000
@@ -24,9 +24,11 @@ steps:
       echo "--- Print the full and short commit hashes"
       SHORT_COMMIT_LENGTH=10
       SHORT_COMMIT=`echo $${BUILDKITE_COMMIT:?} | cut -c1-$${SHORT_COMMIT_LENGTH:?}`
-      JULIA_BINARYDIST_FILENAME=`make print-JULIA_BINARYDIST_FILENAME | cut -c27-`
       ARTIFACT_FILE_EXTENSION="tar.gz"
-      ARTIFACT_FILENAME="$${JULIA_BINARYDIST_FILENAME:?}.$${ARTIFACT_FILE_EXTENSION:?}"
+      ARTIFACT_FILENAME="julia-$${SHORT_COMMIT:?}-${PLATFORM?}${ARCH?}.$${ARTIFACT_FILE_EXTENSION:?}"
+      JULIA_BINARYDIST_FILENAME=`make print-JULIA_BINARYDIST_FILENAME | cut -c27-`
+      JULIA_BINARYDIST="$${JULIA_BINARYDIST_FILENAME:?}.$${ARTIFACT_FILE_EXTENSION:?}"
+
       echo "The full commit is:                     $${BUILDKITE_COMMIT:?}"
       echo "The short commit is:                    $${SHORT_COMMIT:?}"
       echo "The artifact filename will be:    $${ARTIFACT_FILENAME:?}"
@@ -43,7 +45,10 @@ steps:
 
       echo "--- Create build artifacts"
       make -j 8 binary-dist
+      ls -l $${JULIA_BINARYDIST:?}
+      if [[ "$${JULIA_BINARYDIST:?}" != "$${ARTIFACT_FILENAME:?}" ]]; then
+          mv $${JULIA_BINARYDIST:?} $${ARTIFACT_FILENAME:?}
+      fi
       ls -l $${ARTIFACT_FILENAME:?}
-
       echo "--- Upload build artifacts"
       buildkite-agent artifact upload $${ARTIFACT_FILENAME:?}
diff --git a/.buildkite/pipelines/main/platforms/platforms.sh b/.buildkite/pipelines/main/platforms/platforms.sh
@@ -2,9 +2,9 @@
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
 
-PLATFORM="$1"
+OS="$1"
 
-cat "$SCRIPT_DIR/$PLATFORM.arches" | tr -s ' ' | while read _line; do
+cat "$SCRIPT_DIR/$OS.arches" | tr -s ' ' | while read _line; do
   # Remove whitespace from the beginning and end of each line
   line=`echo $_line | tr -s ' '`
 
@@ -13,12 +13,14 @@ cat "$SCRIPT_DIR/$PLATFORM.arches" | tr -s ' ' | while read _line; do
     continue
   fi
 
-  export ARCH=`echo $line        | cut -d ' ' -f 1`
-  export ARCH_LABEL=`echo $line  | cut -d ' ' -f 2`
-  export ROOTFS_ARCH=`echo $line | cut -d ' ' -f 3`
-  export TIMEOUT=`echo $line     | cut -d ' ' -f 4`
-  export ROOTFS_TAG=`echo $line  | cut -d ' ' -f 5`
-  export ROOTFS_TREE=`echo $line | cut -d ' ' -f 6`
-  echo "Launching: $PLATFORM $ARCH $ARCH_LABEL $ROOTFS_ARCH $TIMEOUT"
-  buildkite-agent pipeline upload "$SCRIPT_DIR/$PLATFORM.yml"
+  export PLATFORM=`echo $line    | cut -d ' ' -f 1`
+  export ARCH=`echo $line        | cut -d ' ' -f 2`
+  export ARCH_LABEL=`echo $line  | cut -d ' ' -f 3`
+  export ROOTFS_ARCH=`echo $line | cut -d ' ' -f 4`
+  export ALLOW_FAIL=`echo $line   | cut -d ' ' -f 5`
+  export TIMEOUT=`echo $line     | cut -d ' ' -f 6`
+  export ROOTFS_TAG=`echo $line  | cut -d ' ' -f 7`
+  export ROOTFS_TREE=`echo $line | cut -d ' ' -f 8`
+  echo "Launching: $OS $PLATFORM $ARCH $ARCH_LABEL $ROOTFS_ARCH $ALLOW_FAIL $TIMEOUT"
+  buildkite-agent pipeline upload "$SCRIPT_DIR/$OS.yml"
 done
diff --git a/.buildkite/pipelines/main/platforms/tester_linux.arches b/.buildkite/pipelines/main/platforms/tester_linux.arches
@@ -1,8 +1,9 @@
-# ARCH      ARCH_LABEL      ROOTFS_ARCH      TIMEOUT      ROOTFS_TAG      ROOTFS_TREE
-# aarch64   aarch64         aarch64          60           v3.2            0566841e29f0f9880541c26a6595fd5ce0beb5ff
-# armv7l    armv7l          armv7l           60           v3.2            fb359370b052a47ce5c84cc6b4a7a03ed7053b25
-32          32              i686             60           v3.2            209c4db679a515befd7fb50ecc6bfbecf7ec3d32
-# ppc64le   ppc64le         powerpc64le      60           v3.2            c03a0158b19d48ac84b426834fce0d3584cdd0c7
-64          64_rr           x86_64           180          v3.2            474bf61a926b2d7fcf202284d59d4b11a04601d7
-64          64_st           x86_64           60           v3.2            474bf61a926b2d7fcf202284d59d4b11a04601d7
-64          64_mt           x86_64           60           v3.2            474bf61a926b2d7fcf202284d59d4b11a04601d7
+# PLATFORM      ARCH        ARCH_LABEL      ROOTFS_ARCH      ALLOW_FAIL      TIMEOUT      ROOTFS_TAG      ROOTFS_TREE
+# linux         aarch64     aarch64         aarch64          false           60           v3.2            0566841e29f0f9880541c26a6595fd5ce0beb5ff
+# linux         armv7l      armv7l          armv7l           false           60           v3.2            fb359370b052a47ce5c84cc6b4a7a03ed7053b25
+linux           32          32              i686             false           60           v3.2            209c4db679a515befd7fb50ecc6bfbecf7ec3d32
+# linux         ppc64le     ppc64le         powerpc64le      false           60           v3.2            c03a0158b19d48ac84b426834fce0d3584cdd0c7
+linux           64          64_rr           x86_64           false           180          v3.2            474bf61a926b2d7fcf202284d59d4b11a04601d7
+linux           64          64_st           x86_64           false           60           v3.2            474bf61a926b2d7fcf202284d59d4b11a04601d7
+linux           64          64_mt           x86_64           false           60           v3.2            474bf61a926b2d7fcf202284d59d4b11a04601d7
+musl            64          64              x86_64           true            60           v3.19           e6a2730e37c386c46915b2650d6aaaa398195152
diff --git a/.buildkite/pipelines/main/platforms/tester_linux.yml b/.buildkite/pipelines/main/platforms/tester_linux.yml
@@ -4,16 +4,17 @@ agents:
   sandbox.jl: "true"
   os: "linux"
 steps:
-  - label: "tester_linux${ARCH_LABEL?}"
-    key: tester_linux${ARCH_LABEL?}
-    depends_on: package_linux${ARCH?}
+  - label: "tester_${PLATFORM?}${ARCH_LABEL?}"
+    key: tester_${PLATFORM?}${ARCH_LABEL?}
+    depends_on: package_${PLATFORM?}${ARCH?}
     plugins:
       - JuliaCI/julia#v1:
           # Drop default "registries" directory, so it is not persisted from execution to execution
           persist_depot_dirs: packages,artifacts,compiled
-          version: 1.6
+          version: '1.6'
       - staticfloat/sandbox#v1:
-          rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/${ROOTFS_TAG?}/package_linux.${ROOTFS_ARCH?}.tar.gz
+          rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/${ROOTFS_TAG?}/package_${PLATFORM?}.${ROOTFS_ARCH?}.tar.gz
+          # rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/${ROOTFS_TAG?}/tester${PLATFORM?}.${ROOTFS_ARCH?}.tar.gz
           rootfs_treehash: "${ROOTFS_TREE?}"
           uid: 1000
           gid: 1000
@@ -23,14 +24,15 @@ steps:
     env:
       JULIA_SHELL: "/bin/bash"
     timeout_in_minutes: ${TIMEOUT?}
+    soft_fail: ${ALLOW_FAIL?}
     commands: |
       echo "--- Print the full and short commit hashes"
       SHORT_COMMIT_LENGTH=10
       SHORT_COMMIT=`echo $${BUILDKITE_COMMIT:?} | cut -c1-$${SHORT_COMMIT_LENGTH:?}`
       JULIA_DIR="julia-$${SHORT_COMMIT:?}"
       JULIA_BINARY="$${JULIA_DIR:?}/bin/julia"
       ARTIFACT_FILE_EXTENSION="tar.gz"
-      ARTIFACT_FILENAME="julia-$${SHORT_COMMIT:?}-linux${ARCH?}.$${ARTIFACT_FILE_EXTENSION:?}"
+      ARTIFACT_FILENAME="julia-$${SHORT_COMMIT:?}-${PLATFORM?}${ARCH?}.$${ARTIFACT_FILE_EXTENSION:?}"
       echo "The full commit is:                     $${BUILDKITE_COMMIT:?}"
       echo "The short commit is:                    $${SHORT_COMMIT:?}"
       echo "The artifact filename will be:    $${ARTIFACT_FILENAME:?}"
@@ -53,6 +55,7 @@ steps:
       echo "--- Run the Julia test suite"
       unset JULIA_DEPOT_PATH
       export JULIA_UNDER_RR="$${JULIA_BINARY:?} .buildkite/utilities/rr/rr_capture.jl $${JULIA_BINARY:?}"
+      export OPENBLAS_NUM_THREADS=8
 
       if [[ "$${BUILDKITE_STEP_KEY:?}"   == "tester_linux64_rr" ]]; then
         # For the `rr` job, we disable multi-threading.

diff --git a/.buildkite/pipelines/scheduled/0_webui.yml b/.buildkite/pipelines/scheduled/0_webui.yml
@@ -20,4 +20,8 @@ steps:
           # verifies the treehash of the pipeline itself and the inputs listed in `inputs`
           signed_pipelines:
             - pipeline: .buildkite/pipelines/scheduled/coverage/coverage_linux64.yml
-              signature: U2FsdGVkX1+FtqbbxyzoI/j0InDefRQ3OR06BAM2EWRhDG3SiwiPcOREudCTJ+1Z+AEVwVz5KTgw9lBVO1yjcWts3XePIy/W+arN4V+t97Dfuf4wsAr9ubpQ10GaoFnK
+              signature_file: .buildkite/pipelines/scheduled/coverage/coverage_linux64.yml.signature
+              inputs:
+                - .buildkite/pipelines/scheduled/coverage/coverage_linux64.yml
+                - .buildkite/pipelines/scheduled/coverage/run_tests_parallel.jl
+                - .buildkite/pipelines/scheduled/coverage/upload_coverage.jl
diff --git a/.buildkite/pipelines/scheduled/coverage/coverage_linux64.yml b/.buildkite/pipelines/scheduled/coverage/coverage_linux64.yml
@@ -11,7 +11,9 @@ steps:
             - CODECOV_TOKEN="U2FsdGVkX19l0fhdBabbuiEdysyEabkJLRHfxm7CNRkuGbnwPV365sxxC7Czs/CVcws0N1oB4pVwALRRMe36oA=="
             - COVERALLS_TOKEN="U2FsdGVkX19zopI0hMNzzi2UUOvNVFD8Y0iisFnO/ryVxU7Tit8ZEaeN+gxodRx4CosUUh192F1+q3dTMWRIvw=="
       - JuliaCI/julia#v1:
-          version: 1.6
+          # Drop default "registries" directory, so it is not persisted from execution to execution
+          persist_depot_dirs: packages,artifacts,compiled
+          version: '1.6'
       - staticfloat/sandbox#v1:
           rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/v3.1/package_linux.x86_64.tar.gz
           rootfs_treehash: "8c33c341a864852629b8aac01a6eb6a79b73570e"

diff --git a/.buildkite/pipelines/scheduled/coverage/coverage_linux64.yml.signature b/.buildkite/pipelines/scheduled/coverage/coverage_linux64.yml.signature
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -304,7 +304,7 @@ runtest harness).
   - **Code coverage:** <https://coveralls.io/r/JuliaLang/julia>
 
 * Design of Julia
-  - [Julia: A Fresh Approach to Numerical Computing](https://julialang.org/research/julia-fresh-approach-BEKS.pdf)
+  - [Julia: A Fresh Approach to Numerical Computing](https://julialang.org/assets/research/julia-fresh-approach-BEKS.pdf)
   - [Julia: Dynamism and Performance Reconciled by Design](http://janvitek.org/pubs/oopsla18b.pdf)
   - [All Julia Publications](https://julialang.org/research)
 

diff --git a/NEWS.md b/NEWS.md
@@ -12,6 +12,7 @@ New language features
   to enforce the involved function calls to be (or not to be) inlined. ([#41312])
 * The default behavior of observing `@inbounds` declarations is now an option via `auto` in `--check-bounds=yes|no|auto` ([#41551])
 * New function `eachsplit(str)` for iteratively performing `split(str)`.
+* `∀`, `∃`, and `∄` are now allowed as identifier characters ([#42314]).
 
 Language changes
 ----------------

diff --git a/README.md b/README.md
@@ -97,7 +97,7 @@ Then, acquire the source code by cloning the git repository:
     git clone https://github.com/JuliaLang/julia.git
 
 By default you will be building the latest unstable version of
-Julia. However, most users should use the most recent stable version
+Julia. However, most users should use the [most recent stable version](https://github.com/JuliaLang/julia/releases)
 of Julia. You can get this version by changing to the Julia directory
 and running: