ICU-13103 drop old versions of U_IOSTREAM_SOURCE and __GNUC__

X-SVN-Rev: 40080

icu4c/source/common/unicode/platform.h

@@ -330,31 +330,6 @@
 #   define U_HAVE_INTTYPES_H U_HAVE_STDINT_H
 #endif
 
-/**
- * \def U_IOSTREAM_SOURCE
- * Defines what support for C++ streams is available.
- *
- * If U_IOSTREAM_SOURCE is set to 199711, then <iostream> is available
- * (the ISO/IEC C++ FDIS was published in November 1997), and then
- * one should qualify streams using the std namespace in ICU header
- * files.
- * Starting with ICU 49, this is the only supported version.
- *
- * If U_IOSTREAM_SOURCE is set to 198506, then <iostream.h> is
- * available instead (in June 1985 Stroustrup published
- * "An Extensible I/O Facility for C++" at the summer USENIX conference).
- * Starting with ICU 49, this version is not supported any more.
- *
- * If U_IOSTREAM_SOURCE is 0 (or any value less than 199711),
- * then C++ streams are not available and
- * support for them will be silently suppressed in ICU.
- *
- * @internal
- */
-#ifndef U_IOSTREAM_SOURCE
-#define U_IOSTREAM_SOURCE 199711
-#endif
-
 /*===========================================================================*/
 /** @{ Compiler and environment features                                     */
 /*===========================================================================*/

icu4c/source/io/unicode/ustream.h

@@ -34,13 +34,7 @@
 namespace std { class type_info; } // WORKAROUND: http://llvm.org/bugs/show_bug.cgi?id=13364
 #endif
 
-#if U_IOSTREAM_SOURCE >= 199711
-#if (__GNUC__ == 2)
 #include <iostream>
-#else
-#include <istream>
-#include <ostream>
-#endif
 
 U_NAMESPACE_BEGIN
 
@@ -67,4 +61,3 @@ U_NAMESPACE_END
 /* No operator for UChar because it can conflict with wchar_t  */
 
 #endif
-#endif

icu4c/source/io/ustream.cpp

@@ -29,8 +29,6 @@
 
 // console IO
 
-#if U_IOSTREAM_SOURCE >= 199711
-
 #define STD_NAMESPACE std::
 
 #define STD_OSTREAM STD_NAMESPACE ostream
@@ -170,4 +168,3 @@ STOP_READING:
 U_NAMESPACE_END
 
 #endif
-#endif

icu4c/source/test/intltest/tmsgfmt.cpp

@@ -194,7 +194,7 @@ void TestMessageFormat::testBug2()
 }
 
 #if 0
-#if defined(_DEBUG) && U_IOSTREAM_SOURCE >= 199711
+#if defined(_DEBUG)
 //----------------------------------------------------
 // console I/O
 //----------------------------------------------------
@@ -245,7 +245,7 @@ operator<<( IntlTest&           stream,
     }
     return stream;
 }
-#endif /* defined(_DEBUG) && U_IOSTREAM_SOURCE >= 199711 */
+#endif /* defined(_DEBUG) */
 #endif
 
 void TestMessageFormat::PatternTest() 

icu4c/source/test/iotest/iotest.cpp

@@ -698,9 +698,7 @@ static void addAllTests(TestNode** root) {
     addTest(root, &DataDrivenPrintfPrecision, "datadriv/DataDrivenPrintfPrecision");
     addTest(root, &DataDrivenScanf, "datadriv/DataDrivenScanf");
 #endif
-#if U_IOSTREAM_SOURCE >= 199711
     addStreamTests(root);
-#endif
 }
 
 /* returns the path to icu/source/data/out */

icu4c/source/test/iotest/stream.cpp

@@ -23,7 +23,6 @@
 #include "cmemory.h"
 #include "iotest.h"
 
-#if U_IOSTREAM_SOURCE >= 199711
 #if defined(__GNUC__) && __GNUC__ >= 4
 #define USE_SSTREAM 1
 #include <sstream>
@@ -322,4 +321,3 @@ U_CFUNC void addStreamTests(TestNode** root) {
     addTest(root, &TestStream, "stream/TestStream");
     addTest(root, &TestStreamEOF, "stream/TestStreamEOF");
 }
-#endif