Mercurial > gnulib
view m4/inttypes_h.m4 @ 40212:8da9577294da
unistr/*, uniconv/*: Fix undefined behaviour.
Reported by Jeffrey Walton <noloader@gmail.com>.
* lib/unistr/u-cpy.h (FUNC): Don't invoke memcpy with a zero size.
* lib/unistr/u-cpy-alloc.h (FUNC): Likewise.
* lib/uniconv/u8-conv-from-enc.c (u8_conv_from_encoding): Likewise.
* lib/uniconv/u8-conv-to-enc.c (u8_conv_to_encoding): Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 09 Mar 2019 00:01:47 +0100 |
parents | b06060465f09 |
children |
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# inttypes_h.m4 serial 10 dnl Copyright (C) 1997-2004, 2006, 2008-2019 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. dnl From Paul Eggert. # Define HAVE_INTTYPES_H_WITH_UINTMAX if <inttypes.h> exists, # doesn't clash with <sys/types.h>, and declares uintmax_t. AC_DEFUN([gl_AC_HEADER_INTTYPES_H], [ AC_CACHE_CHECK([for inttypes.h], [gl_cv_header_inttypes_h], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[ #include <sys/types.h> #include <inttypes.h> ]], [[uintmax_t i = (uintmax_t) -1; return !i;]])], [gl_cv_header_inttypes_h=yes], [gl_cv_header_inttypes_h=no])]) if test $gl_cv_header_inttypes_h = yes; then AC_DEFINE_UNQUOTED([HAVE_INTTYPES_H_WITH_UINTMAX], [1], [Define if <inttypes.h> exists, doesn't clash with <sys/types.h>, and declares uintmax_t. ]) fi ])