Fixed a crash in the FString::prepend function on a null string corner case.

Also added more tests to the FString unit tests and switched the ParamProc to
using FString instead of std::string, this will break a few programs in very
minor ways, a few seconds each to fix, I'd say.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/fstring.h b/src/fstring.h
index 3cf42ef..63e1e1a 100644
--- a/src/fstring.h
+++ b/src/fstring.h
@@ -183,6 +183,8 @@ namespace Bu
                  */
                 void prepend( const chr *pData )
                 {
+                        if( pData == NULL )
+                                return;
                         long nLen;
                         for( nLen = 0; pData[nLen] != (chr)0; nLen++ );
                         
@@ -261,6 +263,7 @@ namespace Bu
                                 return NULL;
 
                         flatten();
+                        pFirst->pData[nLength] = (chr)0;
                         return pFirst->pData;
                 }
                 
@@ -274,6 +277,7 @@ namespace Bu
                                 return NULL;
 
                         flatten();
+                        pFirst->pData[nLength] = (chr)0;
                         return pFirst->pData;
                 }
 
@@ -287,6 +291,7 @@ namespace Bu
                                 return NULL;
 
                         flatten();
+                        pFirst->pData[nLength] = (chr)0;
                         return pFirst->pData;
                 }
                 
@@ -300,6 +305,7 @@ namespace Bu
                                 return NULL;
 
                         flatten();
+                        pFirst->pData[nLength] = (chr)0;
                         return pFirst->pData;
                 }
 
@@ -416,6 +422,7 @@ namespace Bu
                         }
 
                         flatten();
+                        pFirst->pData[nLength] = (chr)0;
                         const chr *a = pData;
                         chr *b = pFirst->pData;
                         for( long j = 0; *a!=(chr)0 || *b!=(chr)0; j++, a++, b++ )