Check return values of some library calls.

1 files changed, 10 insertions, 3 deletions

diff --git a/lib-src/make-docfile.c b/lib-src/make-docfile.c
index 4260e4c08f6..b6fccfacfec 100644
--- a/lib-src/make-docfile.c
+++ b/lib-src/make-docfile.c
@@ -158,7 +158,11 @@ main (int argc, char **argv)
     }
   if (argc > i + 1 && !strcmp (argv[i], "-d"))
     {
-      chdir (argv[i + 1]);
+      if (chdir (argv[i + 1]) != 0)
+        {
+          perror (argv[i + 1]);
+          return EXIT_FAILURE;
+        }
       i += 2;
     }
 
@@ -648,6 +652,7 @@ scan_c_file (char *filename, const char *mode)
 
               if (defunflag && (commas == 1 || commas == 2))
                 {
+                  int scanned = 0;
                   do
                     c = getc (infile);
                   while (c == ' ' || c == '\n' || c == '\r' || c == '\t');
@@ -655,12 +660,14 @@ scan_c_file (char *filename, const char *mode)
                     goto eof;
                   ungetc (c, infile);
                   if (commas == 2) /* pick up minargs */
-                    fscanf (infile, "%d", &minargs);
+                    scanned = fscanf (infile, "%d", &minargs);
                   else /* pick up maxargs */
                     if (c == 'M' || c == 'U') /* MANY || UNEVALLED */
                       maxargs = -1;
                     else
-                      fscanf (infile, "%d", &maxargs);
+                      scanned = fscanf (infile, "%d", &maxargs);
+                  if (scanned < 0)
+                    goto eof;
                 }
             }