cid#1448523 silence bogus Out-of-bounds read

Change-Id: I0911133287ace66454e741f7ea994f191d06931c
Reviewed-on: https://gerrit.libreoffice.org/76232
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

soltools/cpp/_cpp.c

@@ -74,6 +74,7 @@ void
         {
             trp->tp = trp->lp = trp->bp;
             outptr = outbuf;
+            // coverity[overrun-buffer-arg: FALSE] - a multiple of trp->max is allocated, not trp->max itself
             anymacros |= gettokens(trp, 1);
             trp->tp = trp->bp;
         }

soltools/cpp/_lex.c

@@ -364,6 +364,7 @@ continue2:
         {
             trp->lp = tp;
             tp = growtokenrow(trp);
+            // coverity[overrun-local : FALSE] - a multiple of trp->max is allocated, not trp->max itself
             maxp = &trp->bp[trp->max];
         }
         tp->type = UNCLASS;

soltools/cpp/_macro.c

@@ -287,7 +287,10 @@ void
         if (np->flag & ISMAC)
             builtin(trp, np->val);
         else
+        {
+            // coverity[overrun-buffer-arg: FALSE] - a multiple of trp->max is allocated, not trp->max itself
             expand(trp, np, &validators);
+        }
         tp = trp->tp;
     }   // end for
     if (flag)
@@ -430,7 +433,10 @@ int
     while (parens > 0)
     {
         if (trp->tp >= trp->lp)
+        {
+            // coverity[overrun-buffer-arg: FALSE] - a multiple of trp->max is allocated, not trp->max itself
             gettokens(trp, 0);
+        }
         if (needspace)
         {
             needspace = 0;
@@ -602,6 +608,7 @@ void
                 tt[len] = '\0';
                 setsource("<##>", -1, -1, tt, 0);
                 maketokenrow(3, &ntr);
+                // coverity[overrun-buffer-arg: FALSE] - a multiple of trp->max is allocated, not trp->max itself
                 gettokens(&ntr, 1);
                 unsetsource();
                 if (ntr.bp->type == UNCLASS)

soltools/cpp/_unix.c

@@ -87,6 +87,7 @@ void
             case 'A':
                 setsource("<cmdarg>", -1, -1, optarg, 0);
                 maketokenrow(3, &tr);
+                // coverity[overrun-buffer-arg: FALSE] - a multiple of trp->max is allocated, not trp->max itself
                 gettokens(&tr, 1);
                 doadefine(&tr, c);
                 dofree(tr.bp);