Hello. I received the following report from the Debian bug system. [ Please keep the Cc: lines when replying. Thanks ].
----- Forwarded message from Erwan Prioul <er...@linux.vnet.ibm.com> ----- Date: Fri, 16 May 2014 16:56:11 +0200 From: Erwan Prioul <er...@linux.vnet.ibm.com> To: Debian Bug Tracking System <sub...@bugs.debian.org> Subject: Bug#748361: m4: build tests are failing on ppc64el Package: m4 Version: 1.4.17-2 Severity: normal Tags: upstream patch Dear Maintainer, I've noticed build tests are failing on ppc64el. In Ubuntu, the attached patch was applied to fix the issue (Fix detection of floating point endianness). Thanks for considering the patch. Erwan Prioul. -- System Information: Debian Release: jessie/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: ppc64el (ppc64le) Kernel: Linux 3.13-1-powerpc64le (SMP w/1 CPU core) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash -- no debconf information Description: Fix detection of floating point endianness See https://lists.gnu.org/archive/html/bug-gnulib/2013-12/msg00104.html Author: Alan Modra <amo...@gmail.com> Author: Colin Watson <cjwat...@ubuntu.com> Forwarded: no Last-Update: 2013-12-18 Index: b/tests/test-isnanl.h =================================================================== --- a/tests/test-isnanl.h +++ b/tests/test-isnanl.h @@ -24,6 +24,12 @@ #include "nan.h" #include "macros.h" +#ifdef __FLOAT_WORD_ORDER__ +# define FLOAT_BIG_ENDIAN (__FLOAT_WORD_ORDER__ != __ORDER_LITTLE_ENDIAN__) +#else +# define FLOAT_BIG_ENDIAN (LDBL_EXPBIT0_WORD < NWORDS / 2) +#endif + int main () { @@ -56,10 +62,10 @@ # if LDBL_EXPBIT0_BIT > 0 m.word[LDBL_EXPBIT0_WORD] ^= (unsigned int) 1 << (LDBL_EXPBIT0_BIT - 1); # else - m.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)] + m.word[LDBL_EXPBIT0_WORD + (FLOAT_BIG_ENDIAN ? 1 : - 1)] ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1); # endif - m.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)] + m.word[LDBL_EXPBIT0_WORD + (FLOAT_BIG_ENDIAN ? 1 : - 1)] |= (unsigned int) 1 << LDBL_EXPBIT0_BIT; ASSERT (isnanl (m.value)); } Index: b/tests/test-signbit.c =================================================================== --- a/tests/test-signbit.c +++ b/tests/test-signbit.c @@ -36,6 +36,12 @@ double zerod = 0.0; long double zerol = 0.0L; +#ifdef __FLOAT_WORD_ORDER__ +# define FLOAT_BIG_ENDIAN (__FLOAT_WORD_ORDER__ != __ORDER_LITTLE_ENDIAN__) +#else +# define FLOAT_BIG_ENDIAN (LDBL_EXPBIT0_WORD < NWORDS / 2) +#endif + static void test_signbitf () { @@ -156,10 +162,10 @@ # if LDBL_EXPBIT0_BIT > 0 m.word[LDBL_EXPBIT0_WORD] ^= (unsigned int) 1 << (LDBL_EXPBIT0_BIT - 1); # else - m.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)] + m.word[LDBL_EXPBIT0_WORD + (FLOAT_BIG_ENDIAN ? 1 : - 1)] ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1); # endif - m.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)] + m.word[LDBL_EXPBIT0_WORD + (FLOAT_BIG_ENDIAN ? 1 : - 1)] |= (unsigned int) 1 << LDBL_EXPBIT0_BIT; (void) signbit (m.value); #undef NWORDS ----- End forwarded message -----
