- Fix a few test in TYPVAL<PSZ> that cause Valgrind warnings

modified:
  storage/connect/value.cpp

- Ignore column comment field in TabColumns because its pointer is flagged
  as invalid by Valgrind (this is a bypass but not a real fix)

modified:
  storage/connect/tabutil.cpp
  storage/connect/value.cpp

storage/connect/tabutil.cpp

@@ -226,8 +226,12 @@ PQRYRES TabColumns(PGLOBAL g, THD *thd, const char *db,
     crp->Kdata->SetValue((fp->null_ptr != 0) ? 1 : 0, i);
 
     crp = crp->Next;                       // Remark
-    fld = fp->comment.str;
-    crp->Kdata->SetValue(fld, fp->comment.length, i);
+
+    // For Valgrind until bug on comment storage is fixed
+//    if (fp->comment.length > 0 && (fld = fp->comment.str))
+//      crp->Kdata->SetValue(fld, fp->comment.length, i);
+//    else
+      crp->Kdata->Reset(i);
 
     crp = crp->Next;                       // New
     crp->Kdata->SetValue((fmt) ? fmt : (char*) "", i);

storage/connect/value.cpp

@@ -871,12 +871,16 @@ TYPVAL<PSZ>::TYPVAL(PSZ s) : VALUE(TYPE_STRING)
 TYPVAL<PSZ>::TYPVAL(PGLOBAL g, PSZ s, int n, int c)
            : VALUE(TYPE_STRING)
   {
-  assert(Type == TYPE_STRING && (g || s));
+  assert(Type == TYPE_STRING);
   Len = (g) ? n : strlen(s);
 
-  if (g && !s) {
+  if (!s) {
+    if (g) {
 	    Strp = (char *)PlugSubAlloc(g, NULL, Len + 1);
   	  Strp[Len] = '\0';
+  	} else
+  	  assert(false);
+  	  
   } else
     Strp = s;
 
@@ -908,16 +912,22 @@ bool TYPVAL<PSZ>::SetValue_pval(PVAL valp, bool chktype)
 void TYPVAL<PSZ>::SetValue_char(char *p, int n)
   {
   if (p) {
-    n = min(n, Len);
+    if ((n = min(n, Len))) {
     	strncpy(Strp, p, n);
 
-    for (p = Strp + n - 1; (*p == ' ' || *p == '\0') && p >= Strp; p--) ;
+//	  for (p = Strp + n - 1; p >= Strp && (*p == ' ' || *p == '\0'); p--) ;
+      for (p = Strp + n - 1; p >= Strp; p--)
+        if (*p && *p != ' ')
+          break;
 
 	    *(++p) = '\0';
 
 	    if (trace > 1)
 	      htrc(" Setting string to: '%s'\n", Strp);
 	      
+	  } else
+	  	Reset();
+
     Null = false;
   } else {
     Reset();