From: Joerg Sonnenberger Date: Tue, 3 Jan 2012 19:22:38 +0000 (+0000) Subject: Don't depend on undefined macros being 0, there are options for the X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f84d560fc73c9177af9081a0edf6726e43ec3a63;p=clang Don't depend on undefined macros being 0, there are options for the preprocessor to warn about it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147466 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/lib/Headers/unwind.h b/lib/Headers/unwind.h index 66ede93e6b..773f3e8093 100644 --- a/lib/Headers/unwind.h +++ b/lib/Headers/unwind.h @@ -23,7 +23,8 @@ /* See "Data Definitions for libgcc_s" in the Linux Standard Base.*/ -#if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1070 +#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ + __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1070 /* Starting in OS X Lion the SDK includes a unwind.h. We should just use it. */ #include_next #else