* io.c (rb_write_error2): get rid of warning on linux. fwrite

of glibc is tagged __attribute__ ((__warn_unused_result__))
  if _FORTIFY_SOURCE != 0.
* vm_dump.c (rb_vm_bugreport): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33871 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Sun Nov 27 20:58:02 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* io.c (rb_write_error2): get rid of warning on linux. fwrite
+	  of glibc is tagged __attribute__ ((__warn_unused_result__))
+	  if _FORTIFY_SOURCE != 0.
+	* vm_dump.c (rb_vm_bugreport): ditto.
+
 Sun Nov 27 19:09:02 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in (stack_protector): disable on mingw.  [Bug#5676]

io.c

@@ -6596,7 +6596,8 @@ void
 rb_write_error2(const char *mesg, long len)
 {
     if (rb_stderr == orig_stderr || RFILE(orig_stderr)->fptr->fd < 0) {
-	(void)fwrite(mesg, sizeof(char), len, stderr);
+	int unused;
+	unused = fwrite(mesg, sizeof(char), len, stderr);
     }
     else {
 	rb_io_write(rb_stderr, rb_str_new(mesg, len));

vm_dump.c

@@ -863,7 +863,8 @@ rb_vm_bugreport(void)
 		while (!feof(fp)) {
 		    char buff[0x100];
 		    size_t rn = fread(buff, 1, 0x100, fp);
-		    fwrite(buff, 1, rn, stderr);
+		    if (fwrite(buff, 1, rn, stderr) != rn)
+			break;
 		}
 
 		fclose(fp);