Sorry it was not against master !
i send then V3 for this patch.

On 8/13/20 5:19 PM, Aschref Ben-Thabet wrote:
From: Aschref Ben Thabet <aschref.ben-tha...@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;
    }
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