File: explicit_bzero.m4

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# explicit_bzero.m4
# serial 1
dnl Copyright 2017-2025 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl This file is offered as-is, without any warranty.

AC_DEFUN([gl_FUNC_EXPLICIT_BZERO],
[
  AC_REQUIRE([gl_STRING_H_DEFAULTS])

  dnl Persuade glibc <string.h> to declare explicit_bzero.
  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

  AC_CHECK_FUNCS_ONCE([explicit_bzero])
  if test $ac_cv_func_explicit_bzero = no; then
    HAVE_EXPLICIT_BZERO=0
  fi
])