Suppress clang-16 warnings

Author: am11

eng/common/native/init-compiler.sh

@@ -63,7 +63,7 @@ if [ -z "$CLR_CC" ]; then
     # Set default versions
     if [ -z "$majorVersion" ]; then
         # note: gcc (all versions) and clang versions higher than 6 do not have minor version in file name, if it is zero.
-        if [ "$compiler" = "clang" ]; then versions="15 14 13 12 11 10 9 8 7 6.0 5.0 4.0 3.9 3.8 3.7 3.6 3.5"
+        if [ "$compiler" = "clang" ]; then versions="16 15 14 13 12 11 10 9 8 7 6.0 5.0 4.0 3.9 3.8 3.7 3.6 3.5"
         elif [ "$compiler" = "gcc" ]; then versions="12 11 10 9 8 7 6 5 4.9"; fi
 
         for version in $versions; do

eng/native/configurecompiler.cmake

@@ -453,6 +453,14 @@ if (CLR_CMAKE_HOST_UNIX)
     add_compile_options(-Wno-incompatible-ms-struct)
 
     add_compile_options(-Wno-reserved-identifier)
+
+    # clang 16.0 introduced buffer hardening https://discourse.llvm.org/t/rfc-c-buffer-hardening/65734
+    # which we are not conforming to yet.
+    add_compile_options(-Wno-unsafe-buffer-usage)
+
+    # other clang 16.0 suppressions
+    add_compile_options(-Wno-single-bit-bitfield-constant-conversion)
+    add_compile_options(-Wno-cast-function-type-strict)
   else()
     add_compile_options(-Wno-uninitialized)
     add_compile_options(-Wno-strict-aliasing)

src/coreclr/dlls/mscordbi/CMakeLists.txt

@@ -109,6 +109,7 @@ elseif(CLR_CMAKE_HOST_UNIX)
 
     if(CLR_CMAKE_HOST_LINUX)
         add_dependencies(mscordbi pal_redefines_file)
+        set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--undefined-version")
     endif(CLR_CMAKE_HOST_LINUX)
 
 endif(CLR_CMAKE_HOST_WIN32)

src/native/corehost/apphost/static/CMakeLists.txt

@@ -66,8 +66,8 @@ if(CLR_CMAKE_TARGET_WIN32)
     add_linker_flag("/DEF:${CMAKE_CURRENT_SOURCE_DIR}/singlefilehost.def")
 
 else()
-    if(CLR_CMAKE_TARGET_OSX)
-        set(DEF_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/singlefilehost_OSXexports.src)
+    if(CLR_CMAKE_TARGET_FREEBSD)
+        set(DEF_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/singlefilehost_freebsdexports.src)
     else()
         set(DEF_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/singlefilehost_unixexports.src)
     endif()

src/native/corehost/apphost/static/singlefilehost_OSXexports.src renamed to src/native/corehost/apphost/static/singlefilehost_freebsdexports.src

@@ -9,3 +9,7 @@ g_dacTable
 
 ; Used by profilers
 MetaDataGetDispenser
+
+; FreeBSD needs to reexport these
+__progname
+environ 

src/native/corehost/apphost/static/singlefilehost_unixexports.src

@@ -9,7 +9,3 @@ g_dacTable
 
 ; Used by profilers
 MetaDataGetDispenser
-
-; FreeBSD needs to reexport these
-__progname
-environ