$NetBSD: patch-aj,v 1.4 2014/12/15 11:35:42 mef Exp $

--- src/lid.c.orig	2012-01-31 21:22:05.000000000 +0900
+++ src/lid.c	2014-11-20 23:12:39.000000000 +0900
@@ -32,7 +32,6 @@
 #include <dirname.h>
 #include <unistd.h>
 #include <termios.h>
-#include <alloca.h>
 #include <regex.h>
 #include <xalloc.h>
 #include <pathmax.h>
@@ -562,10 +561,11 @@ report_filenames (char const *name, stru
 static void
 report_grep (char const *name, struct file_link **flinkv)
 {
-  char line[1<<020];
+  char *line = xmalloc(BUFSIZ);
+  size_t line_len = BUFSIZ;
   char const *pattern = 0;
   regex_t compiled;
-  char *file_name = alloca (PATH_MAX);
+  char file_name[PATH_MAX];
 
   if (key_style == ks_pattern)
     {
@@ -597,8 +597,17 @@ report_grep (char const *name, struct fi
 	  continue;
 	}
 
-      while (fgets (line + 1, sizeof (line) - 1, source_FILE))
+      while (fgets (line + 1, line_len - 1, source_FILE))
 	{
+	  size_t len;
+	  while ((len = strlen(line)) == line_len - 1 &&
+		 line[line_len - 2] != '\n')
+	    {
+	      line = xrealloc(line, line_len + BUFSIZ);
+	      line_len += BUFSIZ;
+	      if (fgets(line + len, BUFSIZ, source_FILE) == NULL)
+		break;
+	    }
 	  line_number++;
 	  if (pattern)
 	    {
@@ -614,6 +623,7 @@ report_grep (char const *name, struct fi
 	}
       fclose (source_FILE);
     }
+  free(line);
 }
 
 static char **
@@ -826,7 +836,7 @@ search_flinkv (struct file_link **flinkv
 {
   char pattern[BUFSIZ];
   unsigned int count;
-  char *file_name = alloca (PATH_MAX);
+  char file_name[PATH_MAX];
   char *eol;
 
   if (fgets (pattern, sizeof (pattern), stdin) == 0)
@@ -1305,7 +1315,7 @@ word_match (char const *name_0, char con
 	  continue;
 	}
       /* march down both strings as long as we match */
-      while (*++name == *++line)
+      while (*name != '\0' && *++name == *++line)
 	;
       /* is this the end of `name', is there a word delimiter ?? */
       if (*name == '\0' && !IS_ALNUM (*line))