Patch for full file system failure.

4 files changed, 33 insertions, 9 deletions

diff --git a/filter.c b/filter.c
index b2cf320..0018721 100644
--- a/filter.c
+++ b/filter.c
@@ -293,12 +293,23 @@ int filter_tee_header (struct filter *chain)
 		fputs ("m4_undefine( [[M4_YY_IN_HEADER]])m4_dnl\n", to_h);
 
 		fflush (to_h);
-		fclose (to_h);
+	    if (ferror (to_h))
+		    lerrsf (_("error writing output file %s"),
+                (char *) chain->extra);
+
+    	else if (fclose (to_h))
+	    	lerrsf (_("error closing output file %s"),
+                (char *) chain->extra);
 	}
 
 	fflush (to_c);
-	fclose (to_c);
+	if (ferror (to_c))
+		lerrsf (_("error writing output file %s"),
+			outfilename ? outfilename : "<stdout>");
 
+	else if (fclose (to_c))
+		lerrsf (_("error closing output file %s"),
+			outfilename ? outfilename : "<stdout>");
 
 	while (wait (0) > 0) ;
 
@@ -380,6 +391,13 @@ int filter_fix_linedirs (struct filter *chain)
 		lineno++;
 	}
 	fflush (stdout);
+	if (ferror (stdout))
+		lerrsf (_("error writing output file %s"),
+			outfilename ? outfilename : "<stdout>");
+
+	else if (fclose (stdout))
+		lerrsf (_("error closing output file %s"),
+			outfilename ? outfilename : "<stdout>");
 
 	return 0;
 }
diff --git a/gen.c b/gen.c
index 5f4b4aa..b78f595 100644
--- a/gen.c
+++ b/gen.c
@@ -1982,7 +1982,7 @@ void make_tables ()
 	do_indent ();
 	out_str ("for ( yyl = %s; yyl < yyleng; ++yyl )\n",
 		 yymore_used ? (yytext_is_array ? "YY_G(yy_prev_more_offset)" :
-				"(yy_more_len)") : "0");
+				"YY_G(yy_more_len)") : "0");
 	indent_up ();
 	indent_puts ("if ( yytext[yyl] == '\\n' )");
 	indent_up ();
diff --git a/libyywrap.c b/libyywrap.c
index 6345d9d..8561a43 100644
--- a/libyywrap.c
+++ b/libyywrap.c
@@ -21,8 +21,7 @@
 /*  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
 /*  PURPOSE. */
 
-
-int     yywrap ()
+int     yywrap (void)
 {
 	return 1;
 }
diff --git a/main.c b/main.c
index 0527595..101ead8 100644
--- a/main.c
+++ b/main.c
@@ -148,7 +148,7 @@ int flex_main (argc, argv)
      int argc;
      char   *argv[];
 {
-	int     i, exit_status;
+	int     i, exit_status, child_status;
 
 	/* Set a longjmp target. Yes, I know it's a hack, but it gets worse: The
 	 * return value of setjmp, if non-zero, is the desired exit code PLUS ONE.
@@ -163,9 +163,17 @@ int flex_main (argc, argv)
             fflush(stdout);
             fclose(stdout);
         }
-        while (wait(0) > 0){
+        while (wait(&child_status) > 0){
+            if (!WIFEXITED (child_status)
+                || WEXITSTATUS (child_status) != 0){
+                /* report an error of a child
+                 */
+                if( exit_status <= 1 )
+                    exit_status = 2;
+
+            }
         }
-		return exit_status - 1;
+        return exit_status - 1;
     }
 
 	flexinit (argc, argv);
@@ -1602,7 +1610,6 @@ void readin ()
 			outn ("#else");
 			outn (yy_stdinit);
 			outn ("#endif");
-			outn ("#endif");
 		}
 
 		else {