Enable COMPILER_RT_HAS_SANITIZER_COMMON on NetBSD

[krytarowski]

Summary

Temporarily keep disabled COMPILER_RT_HAS_ASAN on NetBSD.

Part of the code inspired by the original work on libsanitizer in GCC 5.4 by Christos Zoulas.

Sponsored by <The NetBSD Foundation>

[vitalybuka]

Why do you temporarily disable it?

[krytarowski]

In D36312#832557, @vitalybuka wrote:

Why do you temporarily disable it?

ASAN requires additional code, that I will push after upstreaming common-sanitizer and later ubsan.

[krytarowski]

I will hold on with committing this until merging all the remaining patches for COMPILER_RT_HAS_SANITIZER_COMMON.

All the patches are pending upstream. All tests pass for "check-sanitizer"* on NetBSD/amd64.

• however there are might be some races and few tests randomly fail sometimes - I will investigate it later.

[krytarowski]

2 patches to be reviewed left.. I'm going to commit it now, soon I will prompt for enabling asan.

cmake/config-ix.cmake

 endif()
 
 set(ALL_SANITIZERS asan;dfsan;msan;tsan;safestack;cfi;esan;scudo)
 set(COMPILER_RT_SANITIZERS_TO_BUILD ${ALL_SANITIZERS} CACHE STRING
     "sanitizers to build if supported on the target (all;${ALL_SANITIZERS})")
 list_replace(COMPILER_RT_SANITIZERS_TO_BUILD all "${ALL_SANITIZERS}")
 
 if (SANITIZER_COMMON_SUPPORTED_ARCH AND NOT LLVM_USE_SANITIZER AND
-    (OS_NAME MATCHES "Android|Darwin|Linux|FreeBSD|Fuchsia" OR
+    (OS_NAME MATCHES "Android|Darwin|Linux|FreeBSD|NetBSD|Fuchsia" OR
     (OS_NAME MATCHES "Windows" AND (NOT MINGW AND NOT CYGWIN))))
   set(COMPILER_RT_HAS_SANITIZER_COMMON TRUE)
 else()
   set(COMPILER_RT_HAS_SANITIZER_COMMON FALSE)
 endif()
 
 if (COMPILER_RT_HAS_SANITIZER_COMMON)
   set(COMPILER_RT_HAS_INTERCEPTION TRUE)
 else()
   set(COMPILER_RT_HAS_INTERCEPTION FALSE)
 endif()
 
-if (COMPILER_RT_HAS_SANITIZER_COMMON AND ASAN_SUPPORTED_ARCH)
+if (COMPILER_RT_HAS_SANITIZER_COMMON AND ASAN_SUPPORTED_ARCH AND
+    (NOT OS_NAME MATCHES "NetBSD"))
   set(COMPILER_RT_HAS_ASAN TRUE)
 else()
   set(COMPILER_RT_HAS_ASAN FALSE)
 endif()
 
 if (OS_NAME MATCHES "Linux|FreeBSD|Windows")
   set(COMPILER_RT_ASAN_HAS_STATIC_RUNTIME TRUE)
 else()