From: Bryce McKinlay <mckinlay@redhat.com>
Date: Thu, 15 Jul 2004 00:58:41 +0000 (+0000)
Subject: re PR libgcj/16204 (File I/O fails on files >= 2^31 bytes (2GB))
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b845ed9ff8113d47c2a38dda58f234e35c89508e;p=gcc.git

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
---

diff --git a/libjava/ChangeLog b/libjava/ChangeLog
index 516a34dc275..7b36105f32b 100644
--- a/libjava/ChangeLog
+++ b/libjava/ChangeLog
@@ -1,3 +1,12 @@
+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.
diff --git a/libjava/Makefile.am b/libjava/Makefile.am
index fb775613195..7e5f6af001a 100644
--- a/libjava/Makefile.am
+++ b/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)\"" \
diff --git a/libjava/Makefile.in b/libjava/Makefile.in
index d9c8a5fe1c8..f6da90894a9 100644
--- a/libjava/Makefile.in
+++ b/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 \
diff --git a/libjava/testsuite/libjava.lang/LargeFile.java b/libjava/testsuite/libjava.lang/LargeFile.java
new file mode 100644
index 00000000000..1bb8aec8c26
--- /dev/null
+++ b/libjava/testsuite/libjava.lang/LargeFile.java
@@ -0,0 +1,36 @@
+/* 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();
+      }
+  }
+}
diff --git a/libjava/testsuite/libjava.lang/LargeFile.out b/libjava/testsuite/libjava.lang/LargeFile.out
new file mode 100644
index 00000000000..d86bac9de59
--- /dev/null
+++ b/libjava/testsuite/libjava.lang/LargeFile.out
@@ -0,0 +1 @@
+OK