Fix gcc 8 warning about strncpy

Use memcpy instead.

Fix #1020

diff --git a/libarchive/archive_write_set_format_ar.c b/libarchive/archive_write_set_format_ar.c
index 441119d5d7149e1374c075a9bf13c5ad3623a2bc..50305ccbeda77ada1c134678e15a50c2de7518f5 100644 (file)
--- a/libarchive/archive_write_set_format_ar.c
+++ b/libarchive/archive_write_set_format_ar.c
@@ -180,7 +180,7 @@ archive_write_ar_header(struct archive_write *a, struct archive_entry *entry)
        }
 
        memset(buff, ' ', 60);
-       strncpy(&buff[AR_fmag_offset], "`\n", 2);
+       memcpy(&buff[AR_fmag_offset], "`\n", 2);
 
        if (strcmp(pathname, "/") == 0 ) {
                /* Entry is archive symbol table in GNU format */
@@ -189,7 +189,7 @@ archive_write_ar_header(struct archive_write *a, struct archive_entry *entry)
        }
        if (strcmp(pathname, "__.SYMDEF") == 0) {
                /* Entry is archive symbol table in BSD format */
-               strncpy(buff + AR_name_offset, "__.SYMDEF", 9);
+               memcpy(buff + AR_name_offset, "__.SYMDEF", 9);
                goto stat;
        }
        if (strcmp(pathname, "//") == 0) {
@@ -225,7 +225,7 @@ archive_write_ar_header(struct archive_write *a, struct archive_entry *entry)
                 * actually 15 bytes.
                 */
                if (strlen(filename) <= 15) {
-                       strncpy(&buff[AR_name_offset], 
+                       memcpy(&buff[AR_name_offset],
                            filename, strlen(filename));
                        buff[AR_name_offset + strlen(filename)] = '/';
                } else {
@@ -248,7 +248,7 @@ archive_write_ar_header(struct archive_write *a, struct archive_entry *entry)
                                return (ARCHIVE_FATAL);
                        }
 
-                       strncpy(se, filename, strlen(filename));
+                       memcpy(se, filename, strlen(filename));
                        strcpy(se + strlen(filename), "/\n");
 
                        ss = strstr(ar->strtab, se);
@@ -285,11 +285,11 @@ archive_write_ar_header(struct archive_write *a, struct archive_entry *entry)
                 * archive header.
                 */
                if (strlen(filename) <= 16 && strchr(filename, ' ') == NULL) {
-                       strncpy(&buff[AR_name_offset], filename, strlen(filename));
+                       memcpy(&buff[AR_name_offset], filename, strlen(filename));
                        buff[AR_name_offset + strlen(filename)] = ' ';
                }
                else {
-                       strncpy(buff + AR_name_offset, "#1/", 3);
+                       memcpy(buff + AR_name_offset, "#1/", 3);
                        if (format_decimal(strlen(filename),
                            buff + AR_name_offset + 3,
                            AR_name_size - 3)) {