[PATCH v2] cpukit: Edit String Warninng

[Aschref Ben-Thabet]

From: Aschref Ben Thabet <aschref.ben-thabet at embedded-brains.de>

Using FILENAME_MAX as a parameter in strncpy function can gererate
warnings of type: -Wstringop-truncation. Replacing it with sizeof
(distination_buffer) can avoid this warning.
---
 cpukit/libmisc/shell/main_edit.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/cpukit/libmisc/shell/main_edit.c b/cpukit/libmisc/shell/main_edit.c
index 6e88916ad0..feefd6bff1 100644
--- a/cpukit/libmisc/shell/main_edit.c
+++ b/cpukit/libmisc/shell/main_edit.c
@@ -286,7 +286,7 @@ static struct editor *find_editor(struct env *env, char *filename) {
   struct editor *ed = env->current;
   struct editor *start = ed;
 
-  if (!realpath(filename, fn)) memcpy(fn, filename, FILENAME_MAX);
+  if (!realpath(filename, fn)) strncpy(fn, filename, sizeof(fn)-1);
 
   do {
     if (strcmp(fn, ed->filename) == 0) return ed;
@@ -297,8 +297,9 @@ static struct editor *find_editor(struct env *env, char *filename) {
 
 static int new_file(struct editor *ed, char *filename) {
   if (*filename) {
-    memcpy(ed->filename, filename, FILENAME_MAX);
-  } else {
+      strncpy(ed->filename, filename, sizeof(ed->filename)-1);
+  }
+  else {
     sprintf(ed->filename, "Untitled-%d", ++ed->env->untitled);
     ed->newfile = 1;
   }
@@ -1775,8 +1776,8 @@ static void save_editor(struct editor *ed) {
         return;
       }
     }
-    memcpy(
-      ed->filename, (const char*) ed->env->linebuf, FILENAME_MAX);
+    strncpy(
+        ed->filename, (const char*)ed->env->linebuf, sizeof(ed->filename)-1);
     ed->newfile = 0;
   }
 
-- 
2.26.2