12/28/2023 0 Comments Mellel 4.0.0Moreover, with a usual compilation, an integer overflow should here not yield any particular issue, assuming that the processor does signed addition and multiplication modulo 2 32 (as usual). Note that in practice, an integer overflow may occur only with a 32-bit ABI. This is fixed by the set_z_2exp-overflow patch (with testcases). In the mpfr_set_z_2exp function, a huge mpz_t value can yield an integer overflow.This is fixed by the random_deviate patch. The random_deviate.c file contains non-portable code.mpfr_get_decimal128 and mpfr_set_decimal128 functions) could be disabled at configure time.Ĭorresponding changeset in the 4.1 branch: Note that fixing the issue entirely would require to get rid of all the decimal128 operations in the mean time, decimal support ( i.e. The decimal128-conv patch avoids these conversions by directly using _Decimal128 constants. With GCC (the only tested compiler with software _Decimal128), conversions of double to _Decimal128 yield an increase of 2 to 3 MB for the generated library code when the decimal encoding is BID (designed for software implementations), even though the conversions done in MPFR are very simple.Note: These patches are in unified diff format and some vendors' patch commands cannot deal with them in this case, please use GNU patch (it may already be installed on your system, e.g. However, if some patches are not applied or if patches are applied in a different order, then the patch command will fail to update some chunks, so that the suffix is not always reliable for patches. Moreover a suffix is added to the version string, but note that for practical reasons, not all the files where the version appears are patched thus one can also track applied patches with the MPFR_VERSION_STRING macro (header) and the mpfr_get_version function (library). ![]() With the first two ways, the PATCHES file is modified, so that one can know what patches have been applied, using the mpfr_get_patches function. ![]() Also note that the branch may contain additional minor fixes. In this case, as said on the Gforge page, you should read the v file for details on how to build MPFR. Or checkout the 4.1 branch from the Subversion repository, e.g.Also note that the -dry-run option does not work if the cumulative patch has some file listed several times. Under Microsoft Windows, in addition to the above options, you may need the -binary option (this depends whether the end-of-lines have been converted when you downloaded the patch file). If the -Z option is not available, you can also avoid the unnecessary rebuilds by using the -disable-maintainer-mode configure option later. Because make's rebuild decisions are based on timestamps, the -Z option is highly recommended: it sets the modification time of the patched files from timestamps given in the patch file, thus avoiding unnecessary rebuilds that could need some development utilities (such as autoconf) for the special PATCHES file, this may generate a Not setting time warning, which you can safely ignore. The -N option allows the patch command to ignore patches already applied. Apply the cumulative patch ( version on Gforge via https) on the 4.1.0 release or a partially patched version with the commandįrom the source directory.You can apply the patches in several ways: The following instructions are for Linux and may be similar for other operating systems. The patches are distributed under the same license as this version of MPFR, that is, the GNU Lesser General Public License ( GNU Lesser GPL), version 3 or later. The bugs listed below have been fixed (latest update: ). The MPFR FAQ (common to all MPFR versions).MPFR is also available via third-party packages and ports. You should check that the key fingerprint matches. The signatures can be verified with: gpg -verify file.asc ![]() This can be verified using the DSA key ID 980C197698C3739D this key can be retrieved with: gpg -recv-keys 980C197698C3739D
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