re PR libgcj/16204 (File I/O fails on files >= 2^31 bytes (2GB))

2004-07-14  Bryce McKinlay  <mckinlay@redhat.com>

	PR libgcj/16204
	* Makefile.am (AM_CXXFLAGS): Add -D_FILE_OFFSET_BITS=64 to enable
	large file support.
	* Makefile.in: Rebuilt.
	* testsuite/libjava.lang/LargeFile.java: New test case.
	* testsuite/libjava.lang/LargeFile.out: New file.

From-SVN: r84733

libjava/ChangeLog

+2004-07-14  Bryce McKinlay  <mckinlay@redhat.com>
+
+	PR libgcj/16204
+	* Makefile.am (AM_CXXFLAGS): Add -D_FILE_OFFSET_BITS=64 to enable
+	large file support.
+	* Makefile.in: Rebuilt.
+	* testsuite/libjava.lang/LargeFile.java: New test case.
+	* testsuite/libjava.lang/LargeFile.out: New file.
+
 2004-07-14  Jerry Quinn  <jlquinn@optonline.net>
 
 	* java/beans/EventHandler.java: Remove debugging statements.

libjava/Makefile.am

@@ -111,6 +111,8 @@ AM_CXXFLAGS = -fno-rtti -fnon-call-exceptions $(THREADCXXFLAGS) \
 	-fdollars-in-identifiers \
 ## Detect bugs in the verifier implementation, and maybe other places.
 	-Wswitch-enum \
+## Some systems, including Linux, need this to enable > 2GB file support.
+	-D_FILE_OFFSET_BITS=64 \
 	@LIBGCJ_CXXFLAGS@ @X_CFLAGS@ $(WARNINGS) -D_GNU_SOURCE \
 	-DPREFIX="\"$(prefix)\"" -DLIBDIR="\"$(libdir)\"" \
 	-DBOOT_CLASS_PATH="\"$(jardir)/$(jar_DATA)\"" \

libjava/Makefile.in

@@ -215,6 +215,7 @@ WARNINGS = -Wextra -Wall
 AM_CXXFLAGS = -fno-rtti -fnon-call-exceptions $(THREADCXXFLAGS) \
 	-fdollars-in-identifiers \
 	-Wswitch-enum \
+	-D_FILE_OFFSET_BITS=64 \
 	@LIBGCJ_CXXFLAGS@ @X_CFLAGS@ $(WARNINGS) -D_GNU_SOURCE \
 	-DPREFIX="\"$(prefix)\"" -DLIBDIR="\"$(libdir)\"" \
 	-DBOOT_CLASS_PATH="\"$(jardir)/$(jar_DATA)\"" \
@@ -3076,7 +3077,7 @@ libgcj-test.spec.in libgcj.pc.in libgcj.spec.in
 
 DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST)
 
-TAR = tar
+TAR = gtar
 GZIP_ENV = --best
 DIST_SUBDIRS =  @DIRLTDL@ testsuite gcj include @DIRLTDL@ gcj include
 DEP_FILES =  .deps/$(srcdir)/$(CONVERT_DIR)/gen-from-JIS.P \

libjava/testsuite/libjava.lang/LargeFile.java

+/* Test to ensure files >= 2^31 bytes are supported. */
+
+import java.io.*;
+
+public class LargeFile
+{
+  public static void main(String[] args) throws IOException
+  {
+    File file = new File("LargeFile.tmp");
+
+    try
+      {
+	RandomAccessFile rfile = new RandomAccessFile(file, "rw");
+
+	long pos = (long) Math.pow(2, 31);
+
+	rfile.seek(pos);
+	rfile.write('O');
+	rfile.write('K');
+	rfile.close();
+
+	// Re-open, read byte back using FileInputStream and clean up.
+
+	FileInputStream fis = new FileInputStream(file);
+	fis.skip(pos);
+	System.out.print((char) fis.read());
+	System.out.println((char) fis.read());
+	fis.close();
+      }
+    finally
+      {
+        if (file.exists())
+	  file.delete();
+      }
+  }
+}

libjava/testsuite/libjava.lang/LargeFile.out

+OK