+++ /dev/null
-From f7439f9b1089e17b6721f28e228682831a2f0135 Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gftg@linux.vnet.ibm.com>
-Date: Mon, 21 Aug 2017 14:23:27 +0200
-Subject: [PATCH] Do not use __builtin_types_compatible_p in C++ mode (bug
- 21930)
-
-The logic to define isinf for float128 depends on the availability of
-__builtin_types_compatible_p, which is only available in C mode,
-however, the conditionals do not check for C or C++ mode. This lead to
-an error in libstdc++ configure, as reported by bug 21930.
-
-This patch adds a conditional for C mode in the definition of isinf for
-float128. No definition is provided in C++ mode, since libstdc++
-headers undefine isinf.
-
-Tested for powerpc64le (glibc test suite and libstdc++-v3 configure).
-
- [BZ #21930]
- * math/math.h (isinf): Check if in C or C++ mode before using
- __builtin_types_compatible_p, since this is a C mode feature.
-
-(cherry picked from commit 47a67213a9f51c5f8816d240500b10db605d8b77)
-[Romain rebase on glibc 2.26]
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- math/math.h | 8 ++++++--
- 1 file changed, 6 insertions(+), 2 deletions(-)
-
-diff --git a/math/math.h b/math/math.h
-index e217080..dea8dbe 100644
---- a/math/math.h
-+++ b/math/math.h
-@@ -442,8 +442,12 @@ enum
-
- /* Return nonzero value if X is positive or negative infinity. */
- # if __HAVE_DISTINCT_FLOAT128 && !__GNUC_PREREQ (7,0) \
-- && !defined __SUPPORT_SNAN__
-- /* __builtin_isinf_sign is broken for float128 only before GCC 7.0. */
-+ && !defined __SUPPORT_SNAN__ && !defined __cplusplus
-+ /* Since __builtin_isinf_sign is broken for float128 before GCC 7.0,
-+ use the helper function, __isinff128, with older compilers. This is
-+ only provided for C mode, because in C++ mode, GCC has no support
-+ for __builtin_types_compatible_p (and when in C++ mode, this macro is
-+ not used anyway, because libstdc++ headers undefine it). */
- # define isinf(x) \
- (__builtin_types_compatible_p (__typeof (x), _Float128) \
- ? __isinff128 (x) : __builtin_isinf_sign (x))
---
-2.9.5
-
+++ /dev/null
-From bb21afc362a3ecba07ab386a0bc4385e75fbd4b5 Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gftg@linux.vnet.ibm.com>
-Date: Mon, 14 Aug 2017 17:51:51 -0300
-Subject: [PATCH] Do not use generic selection in C++ mode
-
-The logic to protect the use of generic selection (_Generic) does not
-check for C or C++ mode, however, generic selection is a C-only
-feature.
-
-Tested for powerpc64le.
-
- * misc/sys/cdefs.h (__HAVE_GENERIC_SELECTION): Define to 0, if
- in C++ mode.
-
-(cherry picked from commit 6913ad65e00bb32417ad39c41d292b976171e27e)
-[Romain rebase on glibc 2.26]
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- misc/sys/cdefs.h | 19 ++++++++++---------
- 1 file changed, 10 insertions(+), 9 deletions(-)
-
-diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
-index 06523bf..0c80821 100644
---- a/misc/sys/cdefs.h
-+++ b/misc/sys/cdefs.h
-@@ -464,17 +464,18 @@
- # define __glibc_macro_warning(msg)
- #endif
-
--/* Support for generic selection (ISO C11) is available in GCC since
-- version 4.9. Previous versions do not provide generic selection,
-- even though they might set __STDC_VERSION__ to 201112L, when in
-- -std=c11 mode. Thus, we must check for !defined __GNUC__ when
-- testing __STDC_VERSION__ for generic selection support.
-+/* Generic selection (ISO C11) is a C-only feature, available in GCC
-+ since version 4.9. Previous versions do not provide generic
-+ selection, even though they might set __STDC_VERSION__ to 201112L,
-+ when in -std=c11 mode. Thus, we must check for !defined __GNUC__
-+ when testing __STDC_VERSION__ for generic selection support.
- On the other hand, Clang also defines __GNUC__, so a clang-specific
- check is required to enable the use of generic selection. */
--#if __GNUC_PREREQ (4, 9) \
-- || __glibc_clang_has_extension (c_generic_selections) \
-- || (!defined __GNUC__ && defined __STDC_VERSION__ \
-- && __STDC_VERSION__ >= 201112L)
-+#if !defined __cplusplus \
-+ && (__GNUC_PREREQ (4, 9) \
-+ || __glibc_clang_has_extension (c_generic_selections) \
-+ || (!defined __GNUC__ && defined __STDC_VERSION__ \
-+ && __STDC_VERSION__ >= 201112L))
- # define __HAVE_GENERIC_SELECTION 1
- #else
- # define __HAVE_GENERIC_SELECTION 0
---
-2.9.5
-
+++ /dev/null
-From 9bcf391a21677c6d5fa1c2be71554ec181e24f39 Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gftg@linux.vnet.ibm.com>
-Date: Mon, 14 Aug 2017 13:46:15 -0300
-Subject: [PATCH] Provide a C++ version of issignaling that does not use
- __MATH_TG
-
-The macro __MATH_TG contains the logic to select between long double and
-_Float128, when these types are ABI-distinct. This logic relies on
-__builtin_types_compatible_p, which is not available in C++ mode.
-
-On the other hand, C++ function overloading provides the means to
-distinguish between the floating-point types. The overloading
-resolution will match the correct parameter regardless of type
-qualifiers, i.e.: const and volatile.
-
-Tested for powerpc64le, s390x, and x86_64.
-
- * math/math.h [defined __cplusplus] (issignaling): Provide a C++
- definition for issignaling that does not rely on __MATH_TG,
- since __MATH_TG uses __builtin_types_compatible_p, which is only
- available in C mode.
- (CFLAGS-test-math-issignaling.cc): New variable.
- * math/Makefile [CXX] (tests): Add test-math-issignaling.
- * math/test-math-issignaling.cc: New test for C++ implementation
- of type-generic issignaling.
- * sysdeps/powerpc/powerpc64le/Makefile [subdir == math]
- (CXXFLAGS-test-math-issignaling.cc): Add -mfloat128 to the build
- options of test-math-issignaling on powerpc64le.
-
-(cherry picked from commit a16e8bc08edca84d507715c66d6cddbbc7ed3b62)
-[Romain rebase on glibc 2.26]
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- math/Makefile | 3 +-
- math/math.h | 19 +++++-
- math/test-math-issignaling.cc | 113 +++++++++++++++++++++++++++++++++++
- sysdeps/powerpc/powerpc64le/Makefile | 1 +
- 4 files changed, 134 insertions(+), 2 deletions(-)
- create mode 100644 math/test-math-issignaling.cc
-
-diff --git a/math/Makefile b/math/Makefile
-index e09b0c0..0130fcf 100644
---- a/math/Makefile
-+++ b/math/Makefile
-@@ -203,7 +203,7 @@ tests-static = test-fpucw-static test-fpucw-ieee-static \
- test-signgam-ullong-static test-signgam-ullong-init-static
-
- ifneq (,$(CXX))
--tests += test-math-isinff test-math-iszero
-+tests += test-math-isinff test-math-iszero test-math-issignaling
- endif
-
- ifneq (no,$(PERL))
-@@ -350,6 +350,7 @@ CFLAGS-test-signgam-ullong-init-static.c = -std=c99
-
- CFLAGS-test-math-isinff.cc = -std=gnu++11
- CFLAGS-test-math-iszero.cc = -std=gnu++11
-+CFLAGS-test-math-issignaling.cc = -std=gnu++11
-
- CFLAGS-test-iszero-excess-precision.c = -fexcess-precision=standard
- CFLAGS-test-iseqsig-excess-precision.c = -fexcess-precision=standard
-diff --git a/math/math.h b/math/math.h
-index dea8dbe..add86af 100644
---- a/math/math.h
-+++ b/math/math.h
-@@ -474,7 +474,24 @@ enum
- # include <bits/iscanonical.h>
-
- /* Return nonzero value if X is a signaling NaN. */
--# define issignaling(x) __MATH_TG ((x), __issignaling, (x))
-+# ifndef __cplusplus
-+# define issignaling(x) __MATH_TG ((x), __issignaling, (x))
-+# else
-+ /* In C++ mode, __MATH_TG cannot be used, because it relies on
-+ __builtin_types_compatible_p, which is a C-only builtin. On the
-+ other hand, overloading provides the means to distinguish between
-+ the floating-point types. The overloading resolution will match
-+ the correct parameter (regardless of type qualifiers (i.e.: const
-+ and volatile). */
-+extern "C++" {
-+inline int issignaling (float __val) { return __issignalingf (__val); }
-+inline int issignaling (double __val) { return __issignaling (__val); }
-+inline int issignaling (long double __val) { return __issignalingl (__val); }
-+# if __HAVE_DISTINCT_FLOAT128
-+inline int issignaling (_Float128 __val) { return __issignalingf128 (__val); }
-+# endif
-+} /* extern C++ */
-+# endif
-
- /* Return nonzero value if X is subnormal. */
- # define issubnormal(x) (fpclassify (x) == FP_SUBNORMAL)
-diff --git a/math/test-math-issignaling.cc b/math/test-math-issignaling.cc
-new file mode 100644
-index 0000000..22ae9e1
---- /dev/null
-+++ b/math/test-math-issignaling.cc
-@@ -0,0 +1,113 @@
-+/* Test for the C++ implementation of issignaling.
-+ Copyright (C) 2017 Free Software Foundation, Inc.
-+ This file is part of the GNU C Library.
-+
-+ The GNU C Library is free software; you can redistribute it and/or
-+ modify it under the terms of the GNU Lesser General Public
-+ License as published by the Free Software Foundation; either
-+ version 2.1 of the License, or (at your option) any later version.
-+
-+ The GNU C Library is distributed in the hope that it will be useful,
-+ but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-+ Lesser General Public License for more details.
-+
-+ You should have received a copy of the GNU Lesser General Public
-+ License along with the GNU C Library; if not, see
-+ <http://www.gnu.org/licenses/>. */
-+
-+#define _GNU_SOURCE 1
-+#include <math.h>
-+#include <stdio.h>
-+
-+#include <limits>
-+
-+/* There is no signaling_NaN for _Float128 in std::numeric_limits.
-+ Include ieee754_float128.h and use the bitfields in the union
-+ ieee854_float128.ieee_nan to build a signaling NaN. */
-+#if __HAVE_DISTINCT_FLOAT128
-+# include <ieee754_float128.h>
-+#endif
-+
-+static bool errors;
-+
-+static void
-+check (int actual, int expected, const char *actual_expr, int line)
-+{
-+ if (actual != expected)
-+ {
-+ errors = true;
-+ printf ("%s:%d: error: %s\n", __FILE__, line, actual_expr);
-+ printf ("%s:%d: expected: %d\n", __FILE__, line, expected);
-+ printf ("%s:%d: actual: %d\n", __FILE__, line, actual);
-+ }
-+}
-+
-+#define CHECK(actual, expected) \
-+ check ((actual), (expected), #actual, __LINE__)
-+
-+template <class T>
-+static void
-+check_type ()
-+{
-+ typedef std::numeric_limits<T> limits;
-+ CHECK (issignaling (T{0}), 0);
-+ if (limits::has_infinity)
-+ {
-+ CHECK (issignaling (limits::infinity ()), 0);
-+ CHECK (issignaling (-limits::infinity ()), 0);
-+ }
-+ if (limits::has_quiet_NaN)
-+ CHECK (issignaling (limits::quiet_NaN ()), 0);
-+ if (limits::has_signaling_NaN)
-+ CHECK (issignaling (limits::signaling_NaN ()), 1);
-+}
-+
-+#if __HAVE_DISTINCT_FLOAT128
-+static void
-+check_float128 ()
-+{
-+ ieee854_float128 q;
-+
-+ q.d = 0;
-+ CHECK (issignaling (q.d), 0);
-+
-+ /* Infinity. */
-+ q.ieee.negative = 0;
-+ q.ieee.exponent = 0x7FFF;
-+ q.ieee.mantissa0 = 0x0000;
-+ q.ieee.mantissa1 = 0x00000000;
-+ q.ieee.mantissa2 = 0x00000000;
-+ q.ieee.mantissa3 = 0x00000000;
-+ CHECK (issignaling (q.d), 0);
-+
-+ /* Quiet NaN. */
-+ q.ieee_nan.quiet_nan = 1;
-+ q.ieee_nan.mantissa0 = 0x0000;
-+ CHECK (issignaling (q.d), 0);
-+
-+ /* Still a quiet NaN. */
-+ q.ieee_nan.quiet_nan = 1;
-+ q.ieee_nan.mantissa0 = 0x4000;
-+ CHECK (issignaling (q.d), 0);
-+
-+ /* Signaling NaN. */
-+ q.ieee_nan.quiet_nan = 0;
-+ q.ieee_nan.mantissa0 = 0x4000;
-+ CHECK (issignaling (q.d), 1);
-+}
-+#endif
-+
-+static int
-+do_test (void)
-+{
-+ check_type<float> ();
-+ check_type<double> ();
-+ check_type<long double> ();
-+#if __HAVE_DISTINCT_FLOAT128
-+ check_float128 ();
-+#endif
-+ return errors;
-+}
-+
-+#include <support/test-driver.c>
-diff --git a/sysdeps/powerpc/powerpc64le/Makefile b/sysdeps/powerpc/powerpc64le/Makefile
-index 77617b6..19adbfa 100644
---- a/sysdeps/powerpc/powerpc64le/Makefile
-+++ b/sysdeps/powerpc/powerpc64le/Makefile
-@@ -16,6 +16,7 @@ $(foreach suf,$(all-object-suffixes),%f128_r$(suf)): CFLAGS += -mfloat128
- $(foreach suf,$(all-object-suffixes),$(objpfx)test-float128%$(suf)): CFLAGS += -mfloat128
- $(foreach suf,$(all-object-suffixes),$(objpfx)test-ifloat128%$(suf)): CFLAGS += -mfloat128
- CFLAGS-libm-test-support-float128.c += -mfloat128
-+CFLAGS-test-math-issignaling.cc += -mfloat128
- $(objpfx)test-float128% $(objpfx)test-ifloat128%: \
- gnulib-tests += $(f128-loader-link)
- endif
---
-2.9.5
-
+++ /dev/null
-From 9dbd8386a1b706beb30291a7e76bbfe69c2620cf Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gftg@linux.vnet.ibm.com>
-Date: Wed, 23 Aug 2017 10:16:54 -0300
-Subject: [PATCH] Fix the C++ version of issignaling when __NO_LONG_DOUBLE_MATH
- is defined
-
-When __NO_LONG_DOUBLE_MATH is defined, __issignalingl is not available,
-thus issignaling with long double argument should call __issignaling,
-instead.
-
-Tested for powerpc64le.
-
- * math/math.h [defined __cplusplus] (issignaling): In the long
- double case, call __issignalingl only if __NO_LONG_DOUBLE_MATH
- is not defined. Call __issignaling, otherwise.
-
-(cherry picked from commit 3d7b66f66cb223e899a7ebc0f4c20f13e711c9e0)
-[Romain rebase on glibc 2.26]
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- math/math.h | 10 +++++++++-
- 1 file changed, 9 insertions(+), 1 deletion(-)
-
-diff --git a/math/math.h b/math/math.h
-index add86af..60dfa31 100644
---- a/math/math.h
-+++ b/math/math.h
-@@ -486,7 +486,15 @@ enum
- extern "C++" {
- inline int issignaling (float __val) { return __issignalingf (__val); }
- inline int issignaling (double __val) { return __issignaling (__val); }
--inline int issignaling (long double __val) { return __issignalingl (__val); }
-+inline int
-+issignaling (long double __val)
-+{
-+# ifdef __NO_LONG_DOUBLE_MATH
-+ return __issignaling (__val);
-+# else
-+ return __issignalingl (__val);
-+# endif
-+}
- # if __HAVE_DISTINCT_FLOAT128
- inline int issignaling (_Float128 __val) { return __issignalingf128 (__val); }
- # endif
---
-2.9.5
-
+++ /dev/null
-From 45970aa26d1af87b016ef95b4b35c566aeb6e841 Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gftg@linux.vnet.ibm.com>
-Date: Tue, 22 Aug 2017 16:34:42 -0300
-Subject: [PATCH] Provide a C++ version of iszero that does not use __MATH_TG
- (bug 21930)
-
-When signaling nans are enabled (with -fsignaling-nans), the C++ version
-of iszero uses the fpclassify macro, which is defined with __MATH_TG.
-However, when support for float128 is available, __MATH_TG uses the
-builtin __builtin_types_compatible_p, which is only available in C mode.
-
-This patch refactors the C++ version of iszero so that it uses function
-overloading to select between the floating-point types, instead of
-relying on fpclassify and __MATH_TG.
-
-Tested for powerpc64le, s390x, x86_64, and with build-many-glibcs.py.
-
- [BZ #21930]
- * math/math.h [defined __cplusplus && defined __SUPPORT_SNAN__]
- (iszero): New C++ implementation that does not use
- fpclassify/__MATH_TG/__builtin_types_compatible_p, when
- signaling nans are enabled, since __builtin_types_compatible_p
- is a C-only feature.
- * math/test-math-iszero.cc: When __HAVE_DISTINCT_FLOAT128 is
- defined, include ieee754_float128.h for access to the union and
- member ieee854_float128.ieee.
- [__HAVE_DISTINCT_FLOAT128] (do_test): Call check_float128.
- [__HAVE_DISTINCT_FLOAT128] (check_float128): New function.
- * sysdeps/powerpc/powerpc64le/Makefile [subdir == math]
- (CXXFLAGS-test-math-iszero.cc): Add -mfloat128 to the build
- options of test-math-zero on powerpc64le.
-
-(cherry picked from commit 42496114ec0eb7d6d039d05d4262e109951c600c)
-[Romain rebase on glibc 2.26]
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- math/math.h | 33 +++++++++++++--
- math/test-math-iszero.cc | 79 ++++++++++++++++++++++++++++++++++++
- sysdeps/powerpc/powerpc64le/Makefile | 3 +-
- 3 files changed, 110 insertions(+), 5 deletions(-)
-
-diff --git a/math/math.h b/math/math.h
-index 60dfa31..7c0fc6d 100644
---- a/math/math.h
-+++ b/math/math.h
-@@ -513,15 +513,40 @@ inline int issignaling (_Float128 __val) { return __issignalingf128 (__val); }
- # endif
- # else /* __cplusplus */
- extern "C++" {
-+# ifdef __SUPPORT_SNAN__
-+inline int
-+iszero (float __val)
-+{
-+ return __fpclassifyf (__val) == FP_ZERO;
-+}
-+inline int
-+iszero (double __val)
-+{
-+ return __fpclassify (__val) == FP_ZERO;
-+}
-+inline int
-+iszero (long double __val)
-+{
-+# ifdef __NO_LONG_DOUBLE_MATH
-+ return __fpclassify (__val) == FP_ZERO;
-+# else
-+ return __fpclassifyl (__val) == FP_ZERO;
-+# endif
-+}
-+# if __HAVE_DISTINCT_FLOAT128
-+inline int
-+iszero (_Float128 __val)
-+{
-+ return __fpclassifyf128 (__val) == FP_ZERO;
-+}
-+# endif
-+# else
- template <class __T> inline bool
- iszero (__T __val)
- {
--# ifdef __SUPPORT_SNAN__
-- return fpclassify (__val) == FP_ZERO;
--# else
- return __val == 0;
--# endif
- }
-+# endif
- } /* extern C++ */
- # endif /* __cplusplus */
- #endif /* Use IEC_60559_BFP_EXT. */
-diff --git a/math/test-math-iszero.cc b/math/test-math-iszero.cc
-index 027e972..5c07261 100644
---- a/math/test-math-iszero.cc
-+++ b/math/test-math-iszero.cc
-@@ -22,6 +22,13 @@
-
- #include <limits>
-
-+/* Support for _Float128 in std::numeric_limits is limited.
-+ Include ieee754_float128.h and use the bitfields in the union
-+ ieee854_float128.ieee_nan to build corner-case inputs. */
-+#if __HAVE_DISTINCT_FLOAT128
-+# include <ieee754_float128.h>
-+#endif
-+
- static bool errors;
-
- static void
-@@ -72,12 +79,84 @@ check_type ()
- std::numeric_limits<T>::has_denorm == std::denorm_absent);
- }
-
-+#if __HAVE_DISTINCT_FLOAT128
-+static void
-+check_float128 ()
-+{
-+ ieee854_float128 q;
-+
-+ q.d = 0.0Q;
-+ CHECK (iszero (q.d), 1);
-+ q.d = -0.0Q;
-+ CHECK (iszero (q.d), 1);
-+ q.d = 1.0Q;
-+ CHECK (iszero (q.d), 0);
-+ q.d = -1.0Q;
-+ CHECK (iszero (q.d), 0);
-+
-+ /* Normal min. */
-+ q.ieee.negative = 0;
-+ q.ieee.exponent = 0x0001;
-+ q.ieee.mantissa0 = 0x0000;
-+ q.ieee.mantissa1 = 0x00000000;
-+ q.ieee.mantissa2 = 0x00000000;
-+ q.ieee.mantissa3 = 0x00000000;
-+ CHECK (iszero (q.d), 0);
-+ q.ieee.negative = 1;
-+ CHECK (iszero (q.d), 0);
-+
-+ /* Normal max. */
-+ q.ieee.negative = 0;
-+ q.ieee.exponent = 0x7FFE;
-+ q.ieee.mantissa0 = 0xFFFF;
-+ q.ieee.mantissa1 = 0xFFFFFFFF;
-+ q.ieee.mantissa2 = 0xFFFFFFFF;
-+ q.ieee.mantissa3 = 0xFFFFFFFF;
-+ CHECK (iszero (q.d), 0);
-+ q.ieee.negative = 1;
-+ CHECK (iszero (q.d), 0);
-+
-+ /* Infinity. */
-+ q.ieee.negative = 0;
-+ q.ieee.exponent = 0x7FFF;
-+ q.ieee.mantissa0 = 0x0000;
-+ q.ieee.mantissa1 = 0x00000000;
-+ q.ieee.mantissa2 = 0x00000000;
-+ q.ieee.mantissa3 = 0x00000000;
-+ CHECK (iszero (q.d), 0);
-+
-+ /* Quiet NaN. */
-+ q.ieee_nan.quiet_nan = 1;
-+ q.ieee_nan.mantissa0 = 0x0000;
-+ CHECK (iszero (q.d), 0);
-+
-+ /* Signaling NaN. */
-+ q.ieee_nan.quiet_nan = 0;
-+ q.ieee_nan.mantissa0 = 0x4000;
-+ CHECK (iszero (q.d), 0);
-+
-+ /* Denormal min. */
-+ q.ieee.negative = 0;
-+ q.ieee.exponent = 0x0000;
-+ q.ieee.mantissa0 = 0x0000;
-+ q.ieee.mantissa1 = 0x00000000;
-+ q.ieee.mantissa2 = 0x00000000;
-+ q.ieee.mantissa3 = 0x00000001;
-+ CHECK (iszero (q.d), 0);
-+ q.ieee.negative = 1;
-+ CHECK (iszero (q.d), 0);
-+}
-+#endif
-+
- static int
- do_test (void)
- {
- check_type<float> ();
- check_type<double> ();
- check_type<long double> ();
-+#if __HAVE_DISTINCT_FLOAT128
-+ check_float128 ();
-+#endif
- return errors;
- }
-
-diff --git a/sysdeps/powerpc/powerpc64le/Makefile b/sysdeps/powerpc/powerpc64le/Makefile
-index 19adbfa..dea2290 100644
---- a/sysdeps/powerpc/powerpc64le/Makefile
-+++ b/sysdeps/powerpc/powerpc64le/Makefile
-@@ -17,7 +17,8 @@ $(foreach suf,$(all-object-suffixes),$(objpfx)test-float128%$(suf)): CFLAGS += -
- $(foreach suf,$(all-object-suffixes),$(objpfx)test-ifloat128%$(suf)): CFLAGS += -mfloat128
- CFLAGS-libm-test-support-float128.c += -mfloat128
- CFLAGS-test-math-issignaling.cc += -mfloat128
--$(objpfx)test-float128% $(objpfx)test-ifloat128%: \
-+CFLAGS-test-math-iszero.cc += -mfloat128
-+$(objpfx)test-float128% $(objpfx)test-ifloat128% $(objpfx)test-math-iszero: \
- gnulib-tests += $(f128-loader-link)
- endif
-
---
-2.9.5
-
+++ /dev/null
-From 33f54cf4f81a51e5c8cbfb2408edd439bdee9435 Mon Sep 17 00:00:00 2001
-From: "Gabriel F. T. Gomes" <gabriel@inconstante.eti.br>
-Date: Wed, 20 Sep 2017 15:10:26 -0300
-Subject: [PATCH] Let fpclassify use the builtin when optimizing for size in
- C++ mode (bug 22146)
-
-When optimization for size is on (-Os), fpclassify does not use the
-type-generic __builtin_fpclassify builtin, instead it uses __MATH_TG.
-However, when library support for float128 is available, __MATH_TG uses
-__builtin_types_compatible_p, which is not available in C++ mode.
-
-On the other hand, libstdc++ undefines (in cmath) many macros from
-math.h, including fpclassify, so that it can provide its own functions.
-However, during its configure tests, libstdc++ just tests for the
-availability of the macros (it does not undefine them, nor does it
-provide its own functions).
-
-Finally, when libstdc++ is configured with optimization for size
-enabled, its configure tests include math.h and get the definition of
-fpclassify that uses __MATH_TG (and __builtin_types_compatible_p).
-Since libstdc++ does not undefine the macros during its configure tests,
-they fail.
-
-This patch lets fpclassify use the builtin in C++ mode, even when
-optimization for size is on. This allows the configure test in
-libstdc++ to work.
-
-Tested for powerpc64le and x86_64.
-
- [BZ #22146]
- math/math.h: Let fpclassify use the builtin in C++ mode, even
- when optimazing for size.
-
-(cherry picked from commit c5c4a626098ec884b8527356abdf2a4bb7b6bf27)
-
-[Romain rebase on glibc 2.26)
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
----
- math/math.h | 8 +++++++-
- 1 file changed, 7 insertions(+), 1 deletion(-)
-
-diff --git a/math/math.h b/math/math.h
-index 7c0fc6d..f9348ec 100644
---- a/math/math.h
-+++ b/math/math.h
-@@ -402,7 +402,13 @@ enum
-
- /* Return number of classification appropriate for X. */
- # if __GNUC_PREREQ (4,4) && !defined __SUPPORT_SNAN__ \
-- && !defined __OPTIMIZE_SIZE__
-+ && (!defined __OPTIMIZE_SIZE__ || defined __cplusplus)
-+ /* The check for __cplusplus allows the use of the builtin, even
-+ when optimization for size is on. This is provided for
-+ libstdc++, only to let its configure test work when it is built
-+ with -Os. No further use of this definition of fpclassify is
-+ expected in C++ mode, since libstdc++ provides its own version
-+ of fpclassify in cmath (which undefines fpclassify). */
- # define fpclassify(x) __builtin_fpclassify (FP_NAN, FP_INFINITE, \
- FP_NORMAL, FP_SUBNORMAL, FP_ZERO, x)
- # else
---
-2.9.5
-
-# Locally calculated after checking pgp signature (glibc)
-sha256 e54e0a934cd2bc94429be79da5e9385898d2306b9eaf3c92d5a77af96190f6bd glibc-2.26.tar.xz
+# Locally calculated (fetched from Github)
+sha256 f1f2566fea1518dd7244d322882242bbd654eb215fba51a7ab001b8fd2c9bcbe glibc-glibc-2.26-73-g4b692dffb95ac4812b161eb6a16113d7e824982e.tar.gz
# Locally calculated (fetched from Github)
sha256 adf2dd19a76705a6fb748492eba30cb0be621422190116382a891a3cf099e895 glibc-arc-2017.09-eng010.tar.gz
GLIBC_SITE = $(call github,foss-for-synopsys-dwc-arc-processors,glibc,$(GLIBC_VERSION))
GLIBC_SOURCE = glibc-$(GLIBC_VERSION).tar.gz
else
-GLIBC_VERSION = 2.26
-GLIBC_SITE = $(BR2_GNU_MIRROR)/libc
-GLIBC_SOURCE = glibc-$(GLIBC_VERSION).tar.xz
+# Generate version string using:
+# git describe --match 'glibc-*' --abbrev=40 origin/release/MAJOR.MINOR/master
+GLIBC_VERSION = glibc-2.26-73-g4b692dffb95ac4812b161eb6a16113d7e824982e
+# Upstream doesn't officially provide an https download link.
+# There is one (https://sourceware.org/git/glibc.git) but it's not reliable,
+# sometimes the connection times out. So use an unofficial github mirror.
+# When updating the version, check it on the official repository;
+# *NEVER* decide on a version string by looking at the mirror.
+# Then check that the mirror has been synced already (happens once a day.)
+GLIBC_SITE = https://github.com/bminor/glibc.git
+GLIBC_SITE_METHOD = git
endif
GLIBC_SRC_SUBDIR = .
projects / buildroot.git / commitdiff