PATCH: use C++ io in tagdemo tests

[Robert Boehne]

(I remembered the patch this time...  :)

Although it may seem trivial, it really isn't.  On many
platforms the tagdemo test will pass, even when straight-up
'ld' is used to link.  That is because the tagdemo doesn't
happen to reference anything (in such a case) in the C++ runtime.
This trivial patch changes <stdio.h> printf to <iostream.h> cout <<.
I picked iostream.h rather than iostream because it is more
common with older compilers, and new ones generally support
it as well.  If I find that someone has a compiler with
only <iostream> and no <iostream.h> then I can add a configure
test for both.  The problem with doing that now is that
it cascades into testing for namespace usage, std:: namespace
usage in IO classes... etc.

ChangeLog entry:
2002-03-14  Robert Boehne  <address@hidden>

        tagdemo/foo.cpp: Use C++ IO to catch problems linking to C++ runtime
libraries.
        tagdemo/main.cpp: Ditto.


Ok to commit?

Robert

-- 
Robert Boehne             Software Engineer
Ricardo Software   Chicago Technical Center
TEL: (630)789-0003 x. 238
FAX: (630)789-0127
email:  address@hidden

Index: tagdemo/foo.cpp
===================================================================
RCS file: /cvsroot/libtool/libtool/tagdemo/foo.cpp,v
retrieving revision 1.3
diff -u -r1.3 foo.cpp
--- tagdemo/foo.cpp     6 Jun 2001 14:53:29 -0000       1.3
+++ tagdemo/foo.cpp     1 Apr 2002 18:29:46 -0000
@@ -20,7 +20,7 @@
 // USA.
 
 #include "foo.h"
-#include <stdio.h>
+#include <iostream.h>
 
 #ifdef HAVE_MATH_H
 #include <math.h>
@@ -30,14 +30,14 @@
 int
 foo(void)
 {
-  printf ("cos (0.0) = %g\n", (double) cos ((double) 0.0));
+  cout << "cos (0.0) = " << (double) cos ((double) 0.0) << endl;
   return FOO_RET;
 }
 
 int
 hello(void)
 {
-  printf ("** This is libfoo (tagdemo) **\n");
+  cout << "** This is libfoo (tagdemo) **" << endl;
   return HELLO_RET;
 }
 
Index: tagdemo/main.cpp
===================================================================
RCS file: /cvsroot/libtool/libtool/tagdemo/main.cpp,v
retrieving revision 1.3
diff -u -r1.3 main.cpp
--- tagdemo/main.cpp    6 Jun 2001 14:53:29 -0000       1.3
+++ tagdemo/main.cpp    1 Apr 2002 18:29:46 -0000
@@ -22,13 +22,13 @@
 
 #include "foo.h"
 #include "baz.h"
-#include <stdio.h>
+#include <iostream.h>
 
 
 int
 main (int, char *[])
 {
-  printf ("Welcome to GNU libtool tagdemo!\n");
+  cout << "Welcome to GNU libtool tagdemo C++!" << endl;
 
   foobar_derived FB;
   // Instantiate the derived class.
@@ -38,12 +38,12 @@
 
   int value = fb->hello();
 
-  printf ("foobar::hello returned: %i\n", value);
+  cout << "foobar::hello returned: " << value << endl;
   if (value == HELLO_RET)
-    printf("foobar::hello is ok!\n");
+    cout << "foobar::hello is ok!" << endl;
 
   if (fb->foo() == FOO_RET)
-    printf("foobar::foo is ok!\n");
+    cout << "foobar::foo is ok!" << endl;
 
   // --------------
 
@@ -57,7 +57,7 @@
   // barbaz_derived::baz() should return FOO_RET since it calls
   // foobar_derived::foo(), which in turn calls ::foo().
   if (bb->baz() == FOO_RET)
-    printf("barbaz::baz is ok!\n");
+    cout << "barbaz::baz is ok!" << endl;
 
   return 0;
 }