[greatlrd] 23004: fixing broken asm code. tcslen, wsclen did not check if the string was null or not. Adding a NULL pointer check. This make user32 test working and alot other apps.

Author: greatlrd
Date: Tue Jul 11 00:02:12 2006
New Revision: 23004

URL: http://svn.reactos.org/svn/reactos?rev=23004&view=rev
Log:
fixing broken asm code. 
tcslen, wsclen did not check if the string was null or not. 
Adding a NULL pointer check. This make user32 test working and alot other apps.

Modified:
    trunk/reactos/lib/string/i386/tcslen.h

Modified: trunk/reactos/lib/string/i386/tcslen.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/string/i386/tcslen.h?re...
==============================================================================
--- trunk/reactos/lib/string/i386/tcslen.h (original)
+++ trunk/reactos/lib/string/i386/tcslen.h Tue Jul 11 00:02:12 2006
@@ -9,6 +9,9 @@
  push  %edi
  mov   0x8(%esp), %edi
  xor   %eax, %eax
+ test  %edi,%edi
+ jz   _tcslen_end
+
  mov   $-1, %ecx
  cld

@@ -18,6 +21,8 @@
  dec   %ecx

mov   %ecx, %eax
+
+_tcslen_end:
  pop   %edi
  ret