From: Bruno Haible Date: Sun, 31 Jan 2021 12:10:58 +0000 (+0100) Subject: expl: Document musl libc bug. X-Git-Tag: v1.0~3107 X-Git-Url: https://gitweb.git.savannah.gnu.org/gitweb/?a=commitdiff_plain;h=db446a33a92cbe4f50406bf62970287d2db3834e;p=gnulib.git expl: Document musl libc bug. * doc/posix-functions/expl.texi: Document musl libc bug. * m4/expl.m4 (gl_FUNC_EXPL): Update comment and cross compilation guess. --- diff --git a/ChangeLog b/ChangeLog index 2bf40888b8..72ce05667c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2021-01-31 Bruno Haible + + expl: Document musl libc bug. + * doc/posix-functions/expl.texi: Document musl libc bug. + * m4/expl.m4 (gl_FUNC_EXPL): Update comment and cross + compilation guess. + 2021-01-31 Bruno Haible relocatable-prog-wrapper: Update after recent changes. diff --git a/doc/posix-functions/expl.texi b/doc/posix-functions/expl.texi index d0810b2ddc..f70589f29e 100644 --- a/doc/posix-functions/expl.texi +++ b/doc/posix-functions/expl.texi @@ -23,7 +23,7 @@ MSVC 14. @item This function produces results which are accurate to only 16 digits on some platforms: -NetBSD 9.0. +musl libc 1.2.2/arm64, musl libc 1.2.2/s390x, NetBSD 9.0. @end itemize Portability problems not fixed by Gnulib: diff --git a/m4/expl.m4 b/m4/expl.m4 index 0ed62ab4e0..9e7bfa7c59 100644 --- a/m4/expl.m4 +++ b/m4/expl.m4 @@ -1,4 +1,4 @@ -# expl.m4 serial 17 +# expl.m4 serial 18 dnl Copyright (C) 2010-2021 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -129,7 +129,7 @@ int main (int argc, char *argv[]) if (isnan (expl (x1)) || isnan (expl (x2)) || isnan (expl (x3))) result |= 2; } - /* This test fails on NetBSD 9.0. */ + /* This test fails on musl 1.2.2/arm64, musl 1.2.2/s390x, NetBSD 9.0. */ { const long double TWO_LDBL_MANT_DIG = /* 2^LDBL_MANT_DIG */ (long double) (1U << ((LDBL_MANT_DIG - 1) / 5)) @@ -150,8 +150,8 @@ int main (int argc, char *argv[]) [case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_expl_works="guessing yes" ;; - # Guess yes on musl systems. - *-musl*) gl_cv_func_expl_works="guessing yes" ;; + # Guess no on musl systems. + *-musl*) gl_cv_func_expl_works="guessing no" ;; # Guess yes on native Windows. mingw*) gl_cv_func_expl_works="guessing yes" ;; # If we don't know, obey --enable-cross-guesses.