1 files changed, 13 insertions, 2 deletions

diff --git a/include.c b/include.c
index b3a17ab..f07fb70 100644
--- a/include.c
+++ b/include.c
@@ -54,7 +54,10 @@ issymbolic(const char *dir, const char *component)
         if (strcmp(*pp, buf) == 0)
             return (TRUE);
     if (lstat(buf, &st) == 0 && (st.st_mode & S_IFMT) == S_IFLNK) {
-        *pp++ = strdup(buf);
+        char *p = strdup(buf);
+        if (p == NULL)
+            fatalerr("strdup() failure in %s()\n", __func__);
+        *pp++ = p;
         if (pp >= &notdotdot[MAXDIRS])
             fatalerr("out of .. dirs, increase MAXDIRS\n");
         return (TRUE);
@@ -151,11 +154,16 @@ newinclude(const char *newfile, const char *incstring)
     if (inclistp == inclist + MAXFILES - 1)
         fatalerr("out of space: increase MAXFILES\n");
     ip->i_file = strdup(newfile);
+    if (ip->i_file == NULL)
+            fatalerr("strdup() failure in %s()\n", __func__);
 
     if (incstring == NULL)
         ip->i_incstring = ip->i_file;
-    else
+    else {
         ip->i_incstring = strdup(incstring);
+        if (ip->i_incstring == NULL)
+            fatalerr("strdup() failure in %s()\n", __func__);
+    }
 
     inclistnext = inclistp;
     return (ip);
@@ -205,6 +213,9 @@ included_by(struct inclist *ip, struct inclist *newfile)
         ip->i_merged = reallocarray(ip->i_merged, ip->i_listlen,
                                     sizeof(boolean));
     }
+    if ((ip->i_list == NULL) || (ip->i_merged == NULL))
+        fatalerr("malloc()/realloc() failure in %s()\n", __func__);
+
     ip->i_list[ip->i_listlen - 1] = newfile;
     ip->i_merged[ip->i_listlen - 1] = FALSE;
 }