diff --git a/configure b/configure
--- a/configure
+++ b/configure
@@ -4297,6 +4297,38 @@ else
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: *** missing CFLAGS support: -Wextra" >&5
$as_echo "$as_me: WARNING: *** missing CFLAGS support: -Wextra" >&2;}
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ CFLAGS="$CFLAGS_SAVE"
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: *** check for CFLAGS: -Werror=format-truncation" >&5
+$as_echo "*** check for CFLAGS: -Werror=format-truncation" >&6; }
+ CFLAGS_SAVE="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror=format-truncation"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int a=1;
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: *** CFLAGS supported: -Werror=format-truncation" >&5
+$as_echo "*** CFLAGS supported: -Werror=format-truncation" >&6; }
+ # disable errors related to format-truncation
+ CFLAGS_EXTRA="$CFLAGS_EXTRA -Werror=format-truncation=0"
+
+else
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: *** missing CFLAGS support: -Werror=format-truncation" >&5
+$as_echo "$as_me: WARNING: *** missing CFLAGS support: -Werror=format-truncation" >&2;}
+
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
CFLAGS="$CFLAGS_SAVE"
diff --git a/configure.in b/configure.in
--- a/configure.in
+++ b/configure.in
@@ -135,6 +135,22 @@ AC_ARG_ENABLE([compiler-warning-to-error],
AC_MSG_WARN([*** missing CFLAGS support: -Wextra])
])
CFLAGS="$CFLAGS_SAVE"
+
+ AC_MSG_RESULT([*** check for CFLAGS: -Werror=format-truncation])
+ CFLAGS_SAVE="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror=format-truncation"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+ [[int a=1;]])
+ ],
+ [
+ AC_MSG_RESULT([*** CFLAGS supported: -Werror=format-truncation])
+ # disable errors related to format-truncation
+ CFLAGS_EXTRA="$CFLAGS_EXTRA -Werror=format-truncation=0"
+ ],
+ [
+ AC_MSG_WARN([*** missing CFLAGS support: -Werror=format-truncation])
+ ])
+ CFLAGS="$CFLAGS_SAVE"
])
dnl *************************************************
diff --git a/databases/lib/libipv6calc_db_wrapper_DBIP.c b/databases/lib/libipv6calc_db_wrapper_DBIP.c
--- a/databases/lib/libipv6calc_db_wrapper_DBIP.c
+++ b/databases/lib/libipv6calc_db_wrapper_DBIP.c
@@ -786,8 +786,7 @@ char *libipv6calc_db_wrapper_DBIP_database_info(const unsigned int type) {
};
char year[5];
- strncpy(year, datastring, 4);
- year[4] = '\0';
+ snprintf(year, sizeof(year), "%s", datastring);
snprintf(resultstring, sizeof(resultstring), "DBIP-%d/%s %s Copyright (c) %s db-ip.com All Rights Reserved"
, type
, datastring
diff --git a/ipv6calc/ipv6calc.c b/ipv6calc/ipv6calc.c
index 2eb8ebc..9c961c2 100644
--- a/ipv6calc/ipv6calc.c
+++ b/ipv6calc/ipv6calc.c
@@ -1941,7 +1941,7 @@ PIPE_input:
if ((formatoptions & FORMATOPTION_print_iid_var) == FORMATOPTION_print_iid_var) {
iid_random_result = ipv6addr_iidrandomdetection(&ipv6addr, &iid_statistics);
- sprintf(resultstring2, "%-40s R=%d h=%7.3f r=%7.3f db= %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d dbh= %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d da= %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d dd= %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d dda= %d", resultstring, \
+ snprintf(resultstring2, sizeof(resultstring2), "%-40s R=%d h=%7.3f r=%7.3f db= %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d dbh= %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d da= %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d dd= %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d dda= %d", resultstring, \
iid_random_result, iid_statistics.hexdigit, iid_statistics.lls_residual, \
iid_statistics.digit_blocks[0], iid_statistics.digit_blocks[1], iid_statistics.digit_blocks[2], iid_statistics.digit_blocks[3], iid_statistics.digit_blocks[4], iid_statistics.digit_blocks[5], iid_statistics.digit_blocks[6], iid_statistics.digit_blocks[7], iid_statistics.digit_blocks[8], iid_statistics.digit_blocks[9], iid_statistics.digit_blocks[10], iid_statistics.digit_blocks[11], iid_statistics.digit_blocks[12], iid_statistics.digit_blocks[13], iid_statistics.digit_blocks[14], iid_statistics.digit_blocks[15], \
iid_statistics.digit_blocks_hexdigit[0], iid_statistics.digit_blocks_hexdigit[1], iid_statistics.digit_blocks_hexdigit[2], iid_statistics.digit_blocks_hexdigit[3], iid_statistics.digit_blocks_hexdigit[4], iid_statistics.digit_blocks_hexdigit[5], iid_statistics.digit_blocks_hexdigit[6], iid_statistics.digit_blocks_hexdigit[7], iid_statistics.digit_blocks_hexdigit[8], iid_statistics.digit_blocks_hexdigit[9], iid_statistics.digit_blocks_hexdigit[10], iid_statistics.digit_blocks_hexdigit[11], iid_statistics.digit_blocks_hexdigit[12], iid_statistics.digit_blocks_hexdigit[13], iid_statistics.digit_blocks_hexdigit[14], iid_statistics.digit_blocks_hexdigit[15], \
@@ -1950,7 +1950,7 @@ PIPE_input:
iid_statistics.digit_delta[16], iid_statistics.digit_delta[17], iid_statistics.digit_delta[18], iid_statistics.digit_delta[19], iid_statistics.digit_delta[20], iid_statistics.digit_delta[21], iid_statistics.digit_delta[22], iid_statistics.digit_delta[23], iid_statistics.digit_delta[24], iid_statistics.digit_delta[25], iid_statistics.digit_delta[26], iid_statistics.digit_delta[27], iid_statistics.digit_delta[28], iid_statistics.digit_delta[29], iid_statistics.digit_delta[30], \
iid_statistics.digit_delta_amount
);
- sprintf(resultstring, "%s", resultstring2);
+ snprintf(resultstring, sizeof(resultstring), "%s", resultstring2);
};
break;