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Merge from gnulib

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This incorporates:
2017-08-04 manywarnings: port to 64-bit GCC builds of Emacs
2017-08-01 manywarnings: port to 32-bit GCC bug
* lib/gnulib.mk.in: Regenerate.
* m4/manywarnings.m4: Copy from gnulib.
This commit is contained in:
Paul Eggert 2017-08-04 22:46:31 -07:00
parent 0a24f47f0e
commit b8748dd093
2 changed files with 15 additions and 6 deletions
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2
lib/gnulib.mk.in
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@ -546,8 +546,6 @@ LD_SWITCH_SYSTEM_TEMACS = @LD_SWITCH_SYSTEM_TEMACS@
LD_SWITCH_X_SITE = @LD_SWITCH_X_SITE@
LD_SWITCH_X_SITE_RPATH = @LD_SWITCH_X_SITE_RPATH@
LIBGIF = @LIBGIF@
LIBGNUTLS3_CFLAGS = @LIBGNUTLS3_CFLAGS@
LIBGNUTLS3_LIBS = @LIBGNUTLS3_LIBS@
LIBGNUTLS_CFLAGS = @LIBGNUTLS_CFLAGS@
LIBGNUTLS_LIBS = @LIBGNUTLS_LIBS@
LIBGNU_LIBDEPS = @LIBGNU_LIBDEPS@

19
m4/manywarnings.m4
View File

@ -1,4 +1,4 @@
# manywarnings.m4 serial 8
# manywarnings.m4 serial 10
dnl Copyright (C) 2008-2017 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@ -258,9 +258,20 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC],
# gcc --help=warnings outputs an unusual form for these options; list
# them here so that the above 'comm' command doesn't report a false match.
# Would prefer "min (PTRDIFF_MAX, SIZE_MAX)", but it must be a literal:
ptrdiff_max_max=9223372036854775807
gl_manywarn_set="$gl_manywarn_set -Walloc-size-larger-than=$ptrdiff_max_max"
# Would prefer "min (PTRDIFF_MAX, SIZE_MAX)", but it must be a literal
# and AC_COMPUTE_INT requires it to fit in a long:
AC_MSG_CHECKING([max safe object size])
AC_COMPUTE_INT([gl_alloc_max],
[(LONG_MAX < PTRDIFF_MAX ? LONG_MAX : PTRDIFF_MAX) < (size_t) -1
? (LONG_MAX < PTRDIFF_MAX ? LONG_MAX : PTRDIFF_MAX)
: (size_t) -1],
[[#include <limits.h>
#include <stddef.h>
#include <stdint.h>
]],
[gl_alloc_max=2147483647])
AC_MSG_RESULT([$gl_alloc_max])
gl_manywarn_set="$gl_manywarn_set -Walloc-size-larger-than=$gl_alloc_max"
gl_manywarn_set="$gl_manywarn_set -Warray-bounds=2"
gl_manywarn_set="$gl_manywarn_set -Wformat-overflow=2"
gl_manywarn_set="$gl_manywarn_set -Wformat-truncation=2"