[DO NOT MERGE] Valgrind testing

Author: jakepetroules

.github/workflows/pull_request.yml

@@ -23,6 +23,8 @@ jobs:
 
           # Debug symbols
           apt-get install -y libc6-dbg
+
+          apt-get install -y valgrind
         elif command -v dnf >/dev/null 2>&1 ; then # rhel-ubi9
           dnf update -y
 
@@ -31,6 +33,8 @@ jobs:
 
           # Debug symbols
           dnf debuginfo-install -y glibc
+
+          dnf install -y valgrind
         elif command -v yum >/dev/null 2>&1 ; then # amazonlinux2
           yum update -y
 
@@ -40,11 +44,14 @@ jobs:
           # Debug symbols
           yum install -y yum-utils
           debuginfo-install -y glibc
+
+          yum install -y valgrind
         fi
-      linux_build_command: 'swift test --no-parallel'
+      linux_build_command: 'swift build --build-tests -Xswiftc -sanitize=thread -Xcc -fsanitize=thread && ASAN_OPTIONS=detect_leaks=0 ./.build/debug/SwiftBuildPackageTests.xctest --testing-library swift-testing'
       linux_swift_versions: '["nightly-main", "nightly-6.2"]'
       windows_swift_versions: '["nightly-main"]'
       windows_build_command: 'swift test --no-parallel'
+      enable_windows_checks: false
   soundness:
     name: Soundness
     uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main