Accepting request 211838 from devel:libraries:c_c++

The "gnulib" package contains a number of floating-point test cases
that do not work correctly with the PowerPC long double ("double double")
format.  These tests "accidentally" succeeded anyway in the big-endian
variant, but are now actually failing in little-endian mode.

As is usual for gnulib, those tests end up copied into the source code
of various packages that use gnulib, including coreutils, findutils,
grep, and libunistring.

A patch to fix the tests for ppc64le has been submitted to upstream
to the bug-gnulib mailing list.  We'll work with upstream of the
other affected packages to make sure the copies are refreshed.

- libunistring-gnulib-ppc64le.patch: Fix imported gnulib long double
  math tests for little-endian PowerPC. (forwarded request 211832 from uweigand)

OBS-URL: https://build.opensuse.org/request/show/211838
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/libunistring?expand=0&rev=16

libunistring-gnulib-ppc64le.patch

@@ -0,0 +1,41 @@
+diff --git a/tests/test-isnanl.h b/tests/test-isnanl.h
+index 06e6a7c..2df10f8 100644
+--- a/tests/test-isnanl.h
++++ b/tests/test-isnanl.h
+@@ -51,6 +51,15 @@ main ()
+   /* A bit pattern that is different from a Quiet NaN.  With a bit of luck,
+      it's a Signalling NaN.  */
+   {
++#if defined __powerpc__ && LDBL_MANT_DIG == 106
++    /* This is PowerPC "double double", a pair of two doubles.  Inf and Nan are
++       represented as the corresponding 64-bit IEEE values in the first double;
++       the second is ignored.  Manipulate only the first double.  */
++    #undef NWORDS
++    #define NWORDS \
++      ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
++#endif
++
+     memory_long_double m;
+     m.value = NaNl ();
+ # if LDBL_EXPBIT0_BIT > 0
+diff --git a/tests/test-signbit.c b/tests/test-signbit.c
+index e8ea097..7e24292 100644
+--- a/tests/test-signbit.c
++++ b/tests/test-signbit.c
+@@ -151,6 +151,16 @@ test_signbitl ()
+     #define NWORDS \
+       ((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+     typedef union { long double value; unsigned int word[NWORDS]; } memory_long_double;
++
++#if defined __powerpc__ && LDBL_MANT_DIG == 106
++    /* This is PowerPC "double double", a pair of two doubles.  Inf and Nan are
++       represented as the corresponding 64-bit IEEE values in the first double;
++       the second is ignored.  Manipulate only the first double.  */
++    #undef NWORDS
++    #define NWORDS \
++      ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
++#endif
++
+     memory_long_double m;
+     m.value = zerol / zerol;
+ # if LDBL_EXPBIT0_BIT > 0

libunistring.changes

@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Dec 18 19:56:18 UTC 2013 - uweigand@de.ibm.com
+
+- libunistring-gnulib-ppc64le.patch: Fix imported gnulib long double
+  math tests for little-endian PowerPC.
+
 -------------------------------------------------------------------
 Fri Mar 16 08:58:14 UTC 2012 - cfarrell@suse.com
 

libunistring.spec

@@ -1,7 +1,7 @@
 #
 # spec file for package libunistring
 #
-# Copyright (c) 2012 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# Copyright (c) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -14,6 +14,8 @@
 
 # Please submit bugfixes or comments via http://bugs.opensuse.org/
 #
+
+
 Name:           libunistring
 %define lname	libunistring0
 Version:        0.9.3
@@ -25,6 +27,9 @@ Url:            http://www.gnu.org/software/libunistring/
 Source0:        libunistring-%{version}.tar.bz2
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
+# Fix imported gnulib long double math tests for little-endian PowerPC
+Patch1:         libunistring-gnulib-ppc64le.patch
+
 %description
 This portable C library implements Unicode string types in three flavours:
 (UTF-8, UTF-16, UTF-32), together with functions for character processing
@@ -59,6 +64,7 @@ case folding and regular expressions).
 
 %prep
 %setup -q
+%patch1 -p1
 
 %build
 %configure --disable-static --disable-rpath --docdir=%_docdir/%name