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
