Re: Can we use Jigs

[Nicola Pero]

Please report problems and bug reports to bug-gnustep@gnu.org 
rather than on discuss-gnustep@gnu.org.

> the following runtime error has been generated after running the 
> JavaTest example program of JIGS..
> 
> -------------------
> Compiled to test JIGS version 1.5.1
> Now starting the Java Virtual Machine...
> Check if the virtual machine is running...yes
> Getting the (JNIEnv *) of current thread...ok
> Initializing JIGS...ok
> Now asking for the java.lang.System class pointer...Got java.lang.System
> Now asking for the java.lang.BogusSystem class pointer...Not found (and not 
> crashed!) ==> test passed
> Asking for the selector of getProperty:...Got getProperty:
> Asking if java.lang.System responds to getProperty:...yes
> Asking for the class method implementation...ok
> Calling it to get some system properties:
>  java.vm.version == 1.2.2
>  java.vendor == Sun Microsystems Inc.
>  java.vendor.url == http://www.sun.com/
> 
> 
> SIGSEGV 11 segmentation violation
>     si_signo [11]: SEGV
>     si_errno [0]: 
>     si_code [1]: SEGV_MAPERR [addr: 0x0]

This is probably simply because your libc is crashing upon %s used with a
NULL string.

Try applying the following patch

Index: main.m
===================================================================
RCS file: /cvsroot/gnustep/gnustep/dev-libs/java/Testing/Objc/main.m,v
retrieving revision 1.11
diff -u -r1.11 main.m
--- main.m      2001/07/27 12:18:49     1.11
+++ main.m      2001/09/11 12:58:50
@@ -352,7 +352,14 @@
   printf (" java.vendor.url == %s\n", [result cString]);
 
   result = imp (javaLangSystem, selector, @"java.vendor.uri");
-  printf (" java.vendor.uri == %s\n", [result cString]);
+  if (result != nil)
+    {
+      printf (" java.vendor.uri == %s\n", [result cString]);
+    }
+  else
+    {
+      printf (" java.vendor.uri == (nil)\n", [result cString]);
+    }
 
   result = imp (javaLangSystem, selector, @"java.home");
   printf (" java.home == %s\n", [result cString]);


if you can confirm me it works, I'll apply it (and similar ones) to main.m