Mercurial > gnulib
view m4/warn-on-use.m4 @ 40216:02ed6264c100
strfmon_l: Fix -fsanitize=address finding.
* lib/strfmon_l.c: Include <errno.h>, <stdbool.h>, <stdlib.h>,
<string.h>.
(MAX_ARGS): Renamed from MAX_ARG_WORDS.
(directive_t, directives_t): New types.
(fmon_parse): New function.
(rpl_strfmon_l): Don't call va_arg more often than needed for the
format string. Consume 'long double' arguments in places where the
format string indicates so.
* modules/strfmon_l (Depends-on): Add 'stdbool'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 09 Mar 2019 23:30:40 +0100 |
parents | b06060465f09 |
children |
line wrap: on
line source
# warn-on-use.m4 serial 6 dnl Copyright (C) 2010-2019 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. # gl_WARN_ON_USE_PREPARE(INCLUDES, NAMES) # --------------------------------------- # If the module 'posixcheck' is in use: # # For each whitespace-separated element in the list of NAMES, define # HAVE_RAW_DECL_name if the function has a declaration among INCLUDES # even after being undefined as a macro. # # See warn-on-use.h for some hints on how to poison function names, as # well as ideas on poisoning global variables and macros. NAMES may # include global variables, but remember that only functions work with # _GL_WARN_ON_USE. Typically, INCLUDES only needs to list a single # header, but if the replacement header pulls in other headers because # some systems declare functions in the wrong header, then INCLUDES # should do likewise. # # It is generally safe to assume declarations for functions declared # in the intersection of C89 and C11 (such as printf) without # needing gl_WARN_ON_USE_PREPARE. AC_DEFUN([gl_WARN_ON_USE_PREPARE], [ m4_ifdef([gl_POSIXCHECK], [m4_foreach_w([gl_decl], [$2], [AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])), [Define to 1 if ]m4_defn([gl_decl])[ is declared even after undefining macros.])])dnl dnl FIXME: gl_Symbol must be used unquoted until we can assume dnl autoconf 2.64 or newer. for gl_func in m4_flatten([$2]); do AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl AC_CACHE_CHECK([whether $gl_func is declared without a macro], gl_Symbol, [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1], [@%:@undef $gl_func (void) $gl_func;])], [AS_VAR_SET(gl_Symbol, [yes])], [AS_VAR_SET(gl_Symbol, [no])])]) AS_VAR_IF(gl_Symbol, [yes], [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1]) dnl shortcut - if the raw declaration exists, then set a cache dnl variable to allow skipping any later AC_CHECK_DECL efforts eval ac_cv_have_decl_$gl_func=yes]) AS_VAR_POPDEF([gl_Symbol])dnl done ]) ])