]> git.saurik.com Git - bison.git/blobdiff - src/bison.s1
On syntax errors, report the token on which we choked.
[bison.git] / src / bison.s1
index e71ac990e41483c8bace5a17fda794507c9b6bbe..474e324f14fe442b3a4d29b24bb4649294cb595c 100644 (file)
@@ -635,10 +635,14 @@ yyerrlab:   /* here on detecting error */
               x < (sizeof(yytname) / sizeof(char *)); x++)
            if (yycheck[x + yyn] == x)
              size += strlen(yytname[x]) + 15, count++;
-         msg = (char *) malloc(size + 15);
+         size += strlen ("parse error, unexpected `") + 1;
+         size += strlen (yytname[YYTRANSLATE (yychar)]);
+         msg = (char *) malloc (size);
          if (msg != 0)
            {
-             strcpy(msg, "parse error");
+             strcpy (msg, "parse error, unexpected `");
+             strcat (msg, yytname[YYTRANSLATE (yychar)]);
+             strcat (msg, "'");
 
              if (count < 5)
                {
@@ -647,21 +651,21 @@ yyerrlab:   /* here on detecting error */
                       x < (sizeof(yytname) / sizeof(char *)); x++)
                    if (yycheck[x + yyn] == x)
                      {
-                       strcat(msg, count == 0 ? ", expecting `" : " or `");
-                       strcat(msg, yytname[x]);
-                       strcat(msg, "'");
+                       strcat (msg, count == 0 ? ", expecting `" : " or `");
+                       strcat (msg, yytname[x]);
+                       strcat (msg, "'");
                        count++;
                      }
                }
-             yyerror(msg);
-             free(msg);
+             yyerror (msg);
+             free (msg);
            }
          else
            yyerror ("parse error; also virtual memory exceeded");
        }
       else
 #endif /* YYERROR_VERBOSE */
-       yyerror("parse error");
+       yyerror ("parse error");
     }
 
   goto yyerrlab1;