forked from pool/glibc
Andreas Schwab
a41899225a
- math-c++-compat.patch: Add more C++ compatibility (BZ #22296) - malloc-tcache-leak.patch: Fix tcache leak after thread destruction (BZ #22111) - falkor-memcpy-memmove.patch: Optimized implementation of memcpy/memmove for Qualcomm Falkor - aarch64-cpu-features.patch: Fix glibc.tune.cpu tunable handling - nss-files-large-buffers.patch: Avoid large buffers with many host addresses (BZ #22078) - sysconf-uio-maxiov.patch: Fix missing definition of UIO_MAXIOV (BZ #22321) - glob-tilde-overflow.patch: Fix buffer overflows with GLOB_TILDE (CVE-2017-15670, CVE-2017-15671, CVE-2017-15804, bsc#1064569. bsc#1064580, bsc#1064583, BZ #22320, BZ #22325, BZ #22332) - dl-runtime-resolve-xsave.patch: Use fxsave/xsave/xsavec in _dl_runtime_resolve (BZ #21265) OBS-URL: https://build.opensuse.org/request/show/535960 OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=483
272 lines
11 KiB
Diff
272 lines
11 KiB
Diff
2017-10-17 Romain Naour <romain.naour@gmail.com> (tiny change)
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[BZ #22296]
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* math/math.h: Let signbit use the builtin in C++ mode with gcc
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< 6.x
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2017-10-03 Gabriel F. T. Gomes <gabriel@inconstante.eti.br>
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[BZ #22235]
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* sysdeps/ieee754/ldbl-96/bits/iscanonical.h (iscanonical):
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Provide a C++ implementation based on function overloading,
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rather than using __MATH_TG, which uses C-only builtins.
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* sysdeps/ieee754/ldbl-128ibm/bits/iscanonical.h (iscanonical):
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Likewise.
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2017-09-22 Gabriel F. T. Gomes <gabriel@inconstante.eti.br>
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[BZ #22146]
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math/math.h: Let fpclassify use the builtin in C++ mode, even
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when optimazing for size.
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2017-08-28 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
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[BZ #21930]
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* math/math.h [defined __cplusplus && defined __SUPPORT_SNAN__]
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(iszero): New C++ implementation that does not use
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fpclassify/__MATH_TG/__builtin_types_compatible_p, when
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signaling nans are enabled, since __builtin_types_compatible_p
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is a C-only feature.
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2017-08-24 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
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* math/math.h [defined __cplusplus] (issignaling): In the long
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double case, call __issignalingl only if __NO_LONG_DOUBLE_MATH
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is not defined. Call __issignaling, otherwise.
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2017-08-22 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
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* math/math.h [defined __cplusplus] (issignaling): Provide a C++
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definition for issignaling that does not rely on __MATH_TG,
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since __MATH_TG uses __builtin_types_compatible_p, which is only
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available in C mode.
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2017-08-18 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
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[BZ #21930]
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* math/math.h (isinf): Check if in C or C++ mode before using
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__builtin_types_compatible_p, since this is a C mode feature.
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2017-08-18 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
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* misc/sys/cdefs.h (__HAVE_GENERIC_SELECTION): Define to 0, if
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in C++ mode.
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Index: glibc-2.26/math/math.h
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===================================================================
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--- glibc-2.26.orig/math/math.h
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+++ glibc-2.26/math/math.h
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@@ -402,7 +402,13 @@ enum
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/* Return number of classification appropriate for X. */
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# if __GNUC_PREREQ (4,4) && !defined __SUPPORT_SNAN__ \
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- && !defined __OPTIMIZE_SIZE__
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+ && (!defined __OPTIMIZE_SIZE__ || defined __cplusplus)
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+ /* The check for __cplusplus allows the use of the builtin, even
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+ when optimization for size is on. This is provided for
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+ libstdc++, only to let its configure test work when it is built
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+ with -Os. No further use of this definition of fpclassify is
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+ expected in C++ mode, since libstdc++ provides its own version
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+ of fpclassify in cmath (which undefines fpclassify). */
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# define fpclassify(x) __builtin_fpclassify (FP_NAN, FP_INFINITE, \
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FP_NORMAL, FP_SUBNORMAL, FP_ZERO, x)
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# else
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@@ -412,6 +418,15 @@ enum
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/* Return nonzero value if sign of X is negative. */
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# if __GNUC_PREREQ (6,0)
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# define signbit(x) __builtin_signbit (x)
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+# elif defined __cplusplus
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+ /* In C++ mode, __MATH_TG cannot be used, because it relies on
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+ __builtin_types_compatible_p, which is a C-only builtin.
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+ The check for __cplusplus allows the use of the builtin instead of
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+ __MATH_TG. This is provided for libstdc++, only to let its configure
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+ test work. No further use of this definition of signbit is expected
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+ in C++ mode, since libstdc++ provides its own version of signbit
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+ in cmath (which undefines signbit). */
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+# define signbit(x) __builtin_signbitl (x)
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# elif __GNUC_PREREQ (4,0)
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# define signbit(x) __MATH_TG ((x), __builtin_signbit, (x))
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# else
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@@ -442,8 +457,12 @@ enum
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/* Return nonzero value if X is positive or negative infinity. */
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# if __HAVE_DISTINCT_FLOAT128 && !__GNUC_PREREQ (7,0) \
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- && !defined __SUPPORT_SNAN__
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- /* __builtin_isinf_sign is broken for float128 only before GCC 7.0. */
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+ && !defined __SUPPORT_SNAN__ && !defined __cplusplus
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+ /* Since __builtin_isinf_sign is broken for float128 before GCC 7.0,
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+ use the helper function, __isinff128, with older compilers. This is
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+ only provided for C mode, because in C++ mode, GCC has no support
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+ for __builtin_types_compatible_p (and when in C++ mode, this macro is
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+ not used anyway, because libstdc++ headers undefine it). */
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# define isinf(x) \
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(__builtin_types_compatible_p (__typeof (x), _Float128) \
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? __isinff128 (x) : __builtin_isinf_sign (x))
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@@ -470,7 +489,32 @@ enum
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# include <bits/iscanonical.h>
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/* Return nonzero value if X is a signaling NaN. */
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-# define issignaling(x) __MATH_TG ((x), __issignaling, (x))
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+# ifndef __cplusplus
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+# define issignaling(x) __MATH_TG ((x), __issignaling, (x))
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+# else
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+ /* In C++ mode, __MATH_TG cannot be used, because it relies on
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+ __builtin_types_compatible_p, which is a C-only builtin. On the
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+ other hand, overloading provides the means to distinguish between
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+ the floating-point types. The overloading resolution will match
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+ the correct parameter (regardless of type qualifiers (i.e.: const
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+ and volatile). */
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+extern "C++" {
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+inline int issignaling (float __val) { return __issignalingf (__val); }
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+inline int issignaling (double __val) { return __issignaling (__val); }
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+inline int
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+issignaling (long double __val)
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+{
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+# ifdef __NO_LONG_DOUBLE_MATH
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+ return __issignaling (__val);
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+# else
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+ return __issignalingl (__val);
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+# endif
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+}
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+# if __HAVE_DISTINCT_FLOAT128
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+inline int issignaling (_Float128 __val) { return __issignalingf128 (__val); }
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+# endif
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+} /* extern C++ */
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+# endif
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/* Return nonzero value if X is subnormal. */
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# define issubnormal(x) (fpclassify (x) == FP_SUBNORMAL)
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@@ -484,15 +528,40 @@ enum
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# endif
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# else /* __cplusplus */
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extern "C++" {
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+# ifdef __SUPPORT_SNAN__
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+inline int
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+iszero (float __val)
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+{
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+ return __fpclassifyf (__val) == FP_ZERO;
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+}
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+inline int
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+iszero (double __val)
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+{
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+ return __fpclassify (__val) == FP_ZERO;
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+}
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+inline int
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+iszero (long double __val)
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+{
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+# ifdef __NO_LONG_DOUBLE_MATH
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+ return __fpclassify (__val) == FP_ZERO;
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+# else
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+ return __fpclassifyl (__val) == FP_ZERO;
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+# endif
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+}
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+# if __HAVE_DISTINCT_FLOAT128
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+inline int
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+iszero (_Float128 __val)
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+{
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+ return __fpclassifyf128 (__val) == FP_ZERO;
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+}
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+# endif
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+# else
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template <class __T> inline bool
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iszero (__T __val)
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{
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-# ifdef __SUPPORT_SNAN__
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- return fpclassify (__val) == FP_ZERO;
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-# else
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return __val == 0;
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-# endif
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}
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+# endif
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} /* extern C++ */
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# endif /* __cplusplus */
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#endif /* Use IEC_60559_BFP_EXT. */
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Index: glibc-2.26/misc/sys/cdefs.h
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===================================================================
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--- glibc-2.26.orig/misc/sys/cdefs.h
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+++ glibc-2.26/misc/sys/cdefs.h
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@@ -464,17 +464,18 @@
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# define __glibc_macro_warning(msg)
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#endif
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-/* Support for generic selection (ISO C11) is available in GCC since
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- version 4.9. Previous versions do not provide generic selection,
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- even though they might set __STDC_VERSION__ to 201112L, when in
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- -std=c11 mode. Thus, we must check for !defined __GNUC__ when
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- testing __STDC_VERSION__ for generic selection support.
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+/* Generic selection (ISO C11) is a C-only feature, available in GCC
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+ since version 4.9. Previous versions do not provide generic
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+ selection, even though they might set __STDC_VERSION__ to 201112L,
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+ when in -std=c11 mode. Thus, we must check for !defined __GNUC__
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+ when testing __STDC_VERSION__ for generic selection support.
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On the other hand, Clang also defines __GNUC__, so a clang-specific
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check is required to enable the use of generic selection. */
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-#if __GNUC_PREREQ (4, 9) \
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- || __glibc_clang_has_extension (c_generic_selections) \
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- || (!defined __GNUC__ && defined __STDC_VERSION__ \
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- && __STDC_VERSION__ >= 201112L)
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+#if !defined __cplusplus \
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+ && (__GNUC_PREREQ (4, 9) \
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+ || __glibc_clang_has_extension (c_generic_selections) \
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+ || (!defined __GNUC__ && defined __STDC_VERSION__ \
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+ && __STDC_VERSION__ >= 201112L))
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# define __HAVE_GENERIC_SELECTION 1
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#else
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# define __HAVE_GENERIC_SELECTION 0
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Index: glibc-2.26/sysdeps/ieee754/ldbl-128ibm/bits/iscanonical.h
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===================================================================
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--- glibc-2.26.orig/sysdeps/ieee754/ldbl-128ibm/bits/iscanonical.h
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+++ glibc-2.26/sysdeps/ieee754/ldbl-128ibm/bits/iscanonical.h
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@@ -37,5 +37,22 @@ extern int __iscanonicall (long double _
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conversion, before being discarded; in IBM long double, there are
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encodings that are not consistently handled as corresponding to any
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particular value of the type, and we return 0 for those. */
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-# define iscanonical(x) __MATH_TG ((x), __iscanonical, (x))
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-#endif
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+# ifndef __cplusplus
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+# define iscanonical(x) __MATH_TG ((x), __iscanonical, (x))
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+# else
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+/* In C++ mode, __MATH_TG cannot be used, because it relies on
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+ __builtin_types_compatible_p, which is a C-only builtin. On the
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+ other hand, overloading provides the means to distinguish between
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+ the floating-point types. The overloading resolution will match
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+ the correct parameter (regardless of type qualifiers (i.e.: const
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+ and volatile)). */
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+extern "C++" {
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+inline int iscanonical (float __val) { return __iscanonicalf (__val); }
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+inline int iscanonical (double __val) { return __iscanonical (__val); }
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+inline int iscanonical (long double __val) { return __iscanonicall (__val); }
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+# if __HAVE_DISTINCT_FLOAT128
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+inline int iscanonical (_Float128 __val) { return __iscanonicalf128 (__val); }
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+# endif
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+}
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+# endif /* __cplusplus */
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+#endif /* __NO_LONG_DOUBLE_MATH */
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Index: glibc-2.26/sysdeps/ieee754/ldbl-96/bits/iscanonical.h
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===================================================================
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--- glibc-2.26.orig/sysdeps/ieee754/ldbl-96/bits/iscanonical.h
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+++ glibc-2.26/sysdeps/ieee754/ldbl-96/bits/iscanonical.h
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@@ -34,4 +34,21 @@ extern int __iscanonicall (long double _
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conversion, before being discarded; in extended precision, there
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are encodings that are not consistently handled as corresponding to
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any particular value of the type, and we return 0 for those. */
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-#define iscanonical(x) __MATH_TG ((x), __iscanonical, (x))
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+#ifndef __cplusplus
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+# define iscanonical(x) __MATH_TG ((x), __iscanonical, (x))
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+#else
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+/* In C++ mode, __MATH_TG cannot be used, because it relies on
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+ __builtin_types_compatible_p, which is a C-only builtin. On the
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+ other hand, overloading provides the means to distinguish between
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+ the floating-point types. The overloading resolution will match
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+ the correct parameter (regardless of type qualifiers (i.e.: const
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+ and volatile)). */
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+extern "C++" {
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+inline int iscanonical (float __val) { return __iscanonicalf (__val); }
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+inline int iscanonical (double __val) { return __iscanonical (__val); }
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+inline int iscanonical (long double __val) { return __iscanonicall (__val); }
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+# if __HAVE_DISTINCT_FLOAT128
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+inline int iscanonical (_Float128 __val) { return __iscanonicalf128 (__val); }
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+# endif
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+}
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+#endif /* __cplusplus */
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