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From: Alex Richardson <arichardson@FreeBSD.org>
Date: Wed, 29 Nov 2017 21:16:14 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r326375 - head/share/mk
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Author: arichardson
Date: Wed Nov 29 21:16:14 2017
New Revision: 326375
URL: https://svnweb.freebsd.org/changeset/base/326375

Log:
  Don't fail the build due to clang integer constant range warnings
  
  This warning checks whether a constant is out of range of the integer
  type. An example is `comparison of 'u_int' > 4294967295 is always false`
  and in this case the warning makes sense.
  However, when the type is a typedef that can be either 64 or 32 bits the
  if condition is only tautological in some configurations so this should
  not be a warning that fails the build.
  
  Reviewed by:	dim
  Approved by:	jhb (mentor)
  Differential Revision: https://reviews.freebsd.org/D12912

Modified:
  head/share/mk/bsd.sys.mk

Modified: head/share/mk/bsd.sys.mk
==============================================================================
--- head/share/mk/bsd.sys.mk	Wed Nov 29 20:44:40 2017	(r326374)
+++ head/share/mk/bsd.sys.mk	Wed Nov 29 21:16:14 2017	(r326375)
@@ -81,6 +81,9 @@ CWARNFLAGS.clang+=	-Wno-unused-local-typedef
 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 40000
 CWARNFLAGS.clang+=	-Wno-address-of-packed-member
 .endif
+.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 60000
+CWARNFLAGS.clang+=	-Wno-error=tautological-constant-compare
+.endif
 .endif # WARNS <= 3
 .if ${WARNS} <= 2
 CWARNFLAGS.clang+=	-Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter