diff --git a/src/zap.c b/src/zap.c
index f649436a7..fa3795560 100644
--- a/src/zap.c
+++ b/src/zap.c
@@ -5936,8 +5936,8 @@ destroy_items(
         i = (elig_stacks < limit) ? elig_stacks : rn2(elig_stacks);
         /* do this afterwards to avoid not filling items_to_destroy[0] */
         elig_stacks++;
-        if (i >= limit) {
-            /* random index was too high */
+        if (i < 0 || i >= limit) {
+            /* random index was too high; mollify analyzer by including < 0 */
             continue;
         }
         items_to_destroy[i].oid = obj->o_id;
diff --git a/sys/share/uudecode.c b/sys/share/uudecode.c
index f3a2cb764..223b94031 100644
--- a/sys/share/uudecode.c
+++ b/sys/share/uudecode.c
@@ -158,6 +158,7 @@ main(int argc, char **argv)
         strcpy(dest, dnbuf);
     }
 #endif /* !MSDOS && !VMS && !WIN32 && !__APPLE__  */
+    dest[sizeof dest - 1] = '\0';
 
 /* create output file */
 #if defined(MSDOS) || defined(WIN32)
diff --git a/util/makedefs.c b/util/makedefs.c
index 1147921f0..6dfb582f2 100644
--- a/util/makedefs.c
+++ b/util/makedefs.c
@@ -482,7 +482,7 @@ getfp(const char *template, const char *tag, const char *mode, int flg)
         err = tmpfile_s(&rv);
 #if defined(MSDOS) || defined(WIN32)
         if (!err && (!strcmp(mode, WRTMODE) || !strcmp(mode, RDTMODE))) {
-           _setmode(fileno(rv), O_TEXT);
+            (void) _setmode(fileno(rv), O_TEXT);
         }
 #endif
     } else
@@ -1321,6 +1321,10 @@ do_data(void)
 
     /* reprocess the scratch file; 1st format an error msg, just in case */
     line = malloc(BUFSZ + MAXFNAMELEN);
+    if (!line) {
+        fprintf(stderr, "makedefs malloc() failure\n");
+        exit(EXIT_FAILURE);
+    }
     Sprintf(line, "rewind of \"%s\"", tempfile);
     if (rewind(tfp) != 0)
         goto dead_data;
diff --git a/win/share/tilemap.c b/win/share/tilemap.c
index 6fd2a2803..ec26f513b 100644
--- a/win/share/tilemap.c
+++ b/win/share/tilemap.c
@@ -1499,14 +1499,19 @@ add_tileref(
     char buf[BUFSZ];
 
     if (!tilelist[n]) {
-        tilelist[n] = malloc(sizeof temp);
-        tilelist[n]->tilenum = n;
-        tilelist[n]->src = src;
-        tilelist[n]->file_entry = entrynum;
-        /* leave room for trailing "...nnnn" */
-        Snprintf(tilelist[n]->tilenam, sizeof tilelist[n]->tilenam - 7,
-                 "%s%s", prefix, nam);
-        tilelist[n]->references[0] = '\0';
+        if ((tilelist[n] = malloc(sizeof temp)) != 0) {
+            tilelist[n]->tilenum = n;
+            tilelist[n]->src = src;
+            tilelist[n]->file_entry = entrynum;
+            /* leave room for trailing "...nnnn" */
+            Snprintf(tilelist[n]->tilenam, sizeof tilelist[n]->tilenam - 7,
+                     "%s%s", prefix, nam);
+            tilelist[n]->references[0] = '\0';
+        } else {
+            Fprintf(stderr, "tilemap malloc failure %zu bytes\n",
+                    sizeof temp);
+            exit(EXIT_FAILURE);
+        }
     }
     Snprintf(temp.references,
              sizeof temp.references - 7, /* room for "...nnnn" */
diff --git a/win/share/tiletext.c b/win/share/tiletext.c
index b2e71caf6..ac9a8afd7 100644
--- a/win/share/tiletext.c
+++ b/win/share/tiletext.c
@@ -199,6 +199,9 @@ read_txttile(FILE *txtfile, pixel (*pixels)[TILE_X])
     if (reslt <= 0)
         goto done;
 
+    ttype[sizeof ttype - 1] = '\0';
+    buf[sizeof buf - 1] = '\0';
+
     if (tile_set == MONSTER_SET && gend[0] == 'f')
         gidx = 1;
 
@@ -260,10 +263,14 @@ read_txttile(FILE *txtfile, pixel (*pixels)[TILE_X])
             }
             if (k == -1) {
                 Fprintf(stderr, "color %c not in colormap!\n", inbuf[i]);
-            } else {
+            } else if (k >= 0 && k < MAXCOLORMAPSIZE) {
                 pixels[j][i].r = ColorMap[CM_RED][k];
                 pixels[j][i].g = ColorMap[CM_GREEN][k];
                 pixels[j][i].b = ColorMap[CM_BLUE][k];
+            } else {
+                Fprintf(stderr,
+                        "%d exceeds array boundary for ColorMap[][%d]!\n",
+                        k, MAXCOLORMAPSIZE);
             }
         }
     }