maint: avoid "magic number exit".

[bison.git] / doc / bison.texinfo

diff --git a/doc/bison.texinfo b/doc/bison.texinfo
index c121dd4eccd291592e97a00b991df9ede260a66b..329d81d0d864c16dfe1c211bb684db44c86e445c 100644 (file)
--- a/doc/bison.texinfo
+++ b/doc/bison.texinfo
@@ -9366,8 +9366,8 @@ calcxx_driver::scan_begin ()
     yyin = stdin;
   else if (!(yyin = fopen (file.c_str (), "r")))
     @{
-      error (std::string ("cannot open ") + file);
-      exit (1);
+      error (std::string ("cannot open ") + file + ": " + strerror(errno));
+      exit (EXIT_FAILURE);
     @}
 @}
 
@@ -10045,11 +10045,17 @@ yyparse (char const *file)
 {
   yyin = fopen (file, "r");
   if (!yyin)
-    exit (2);
+  {
+    perror ("fopen");
+    exit (EXIT_FAILURE);
+  }
   /* One token only.  */
   yylex ();
   if (fclose (yyin) != 0)
-    exit (3);
+  {
+    perror ("fclose");
+    exit (EXIT_FAILURE);
+  }
   return 0;
 }