[clang] Only provide C11 features in <float.h> starting with C++17

Summary:
In r353970, I enabled those features in C++11 and above. To be strictly
conforming, those features should only be enabled in C++17 and above.

Reviewers: jfb, eli.friedman

Subscribers: jkorous, dexonsmith, libcxx-commits

Differential Revision: https://reviews.llvm.org/D58289

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@354691 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Headers/float.h b/lib/Headers/float.h
index 92bddee2f6eb43904dbc16421c4b78c6ef3114e0..46a8dae06ab0f920a46741937122ce9aeec6bd0e 100644 (file)
--- a/lib/Headers/float.h
+++ b/lib/Headers/float.h
@@ -78,7 +78,7 @@
 #  undef FLT_MIN
 #  undef DBL_MIN
 #  undef LDBL_MIN
-#  if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L
+#  if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L
 #    undef FLT_TRUE_MIN
 #    undef DBL_TRUE_MIN
 #    undef LDBL_TRUE_MIN
@@ -137,7 +137,7 @@
 #define DBL_MIN __DBL_MIN__
 #define LDBL_MIN __LDBL_MIN__
 
-#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L
+#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L
 #  define FLT_TRUE_MIN __FLT_DENORM_MIN__
 #  define DBL_TRUE_MIN __DBL_DENORM_MIN__
 #  define LDBL_TRUE_MIN __LDBL_DENORM_MIN__

diff --git a/test/Headers/float.c b/test/Headers/float.c
index 4f38725e27b5544d04903198d072fdfdffe09518..70c11b0537537285b0449af467f450cc20990543 100644 (file)
--- a/test/Headers/float.c
+++ b/test/Headers/float.c
@@ -45,7 +45,7 @@
 #endif
 
 
-#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L
+#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L
     #ifndef FLT_DECIMAL_DIG
         #error "Mandatory macro FLT_DECIMAL_DIG is missing."
     #elif   FLT_DECIMAL_DIG < 6
@@ -215,7 +215,7 @@ _Static_assert(FLT_MANT_DIG == __FLT_MANT_DIG__, "");
 _Static_assert(DBL_MANT_DIG == __DBL_MANT_DIG__, "");
 _Static_assert(LDBL_MANT_DIG == __LDBL_MANT_DIG__, "");
 
-#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L
+#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L
 _Static_assert(FLT_DECIMAL_DIG == __FLT_DECIMAL_DIG__, "");
 _Static_assert(DBL_DECIMAL_DIG == __DBL_DECIMAL_DIG__, "");
 _Static_assert(LDBL_DECIMAL_DIG == __LDBL_DECIMAL_DIG__, "");