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cf: Include <string.h> for memset in AC_HAVE_STRUCT_FIELD

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Otherwise, the check relies on an implicit function declaration,
and will fail unconditionally with compilers that do not support
them.
This commit is contained in:
Florian Weimer
2023-04-13 13:13:59 +02:00
committed by Jeffrey Altman
parent 78f017fe01
commit c711cbf7cc
1 changed files with 2 additions and 1 deletions

3
cf/have-struct-field.m4

@ -7,7 +7,8 @@ dnl AC_HAVE_STRUCT_FIELD(struct, field, headers)
AC_DEFUN([AC_HAVE_STRUCT_FIELD], [
define(cache_val, translit(ac_cv_type_$1_$2, [A-Z ], [a-z_]))
AC_CACHE_CHECK([for $2 in $1], cache_val,[
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[$3]],
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <string.h>
$3]],
[[$1 x; memset(&x, 0, sizeof(x)); x.$2]])],
[cache_val=yes],
[cache_val=no])