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crosstool-ng/patches/gcc/linaro-4.9-2017.01/850-libstdcxx-uclibc-c99.patch
Alexey Neyman 99283866cc Add patches to Linaro GCC 
Same as the base release as long as they applied.
MUSL patches didn't, removed.

Also, unobsolete Linaro GCC5 now that they rolled out a new release.

Signed-off-by: Alexey Neyman <stilor@att.net>
2017-02-28 00:57:53 -08:00

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Allow C99-depending features of libstdc++ with uClibc
The libstdc++ code is fairly restrictive on how it checks for C99
compatibility: it requires *complete* C99 support to enable certain
features. For example, uClibc provides a good number of C99 features,
but not C99 complex number support. For this reason, libstdc++
completely disables many the standard C++ methods that can in fact
work because uClibc provides the necessary functions.
This patch is similar and highly inspired from
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58393, but implemented in
a way that doesn't involve changing the configure.ac script, as
autoreconfiguring gcc is complicated. It simply relies on the fact
that uClibc defines the __UCLIBC__ definition.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
[Gustavo: update for 4.9.3]
Index: b/libstdc++-v3/config/locale/generic/c_locale.h
===================================================================
--- a/libstdc++-v3/config/locale/generic/c_locale.h
+++ b/libstdc++-v3/config/locale/generic/c_locale.h
@@ -70,7 +70,7 @@
__builtin_va_list __args;
__builtin_va_start(__args, __fmt);
-#ifdef _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args);
#else
const int __ret = __builtin_vsprintf(__out, __fmt, __args);
Index: b/libstdc++-v3/config/locale/gnu/c_locale.h
===================================================================
--- a/libstdc++-v3/config/locale/gnu/c_locale.h
+++ b/libstdc++-v3/config/locale/gnu/c_locale.h
@@ -88,7 +88,7 @@
__builtin_va_list __args;
__builtin_va_start(__args, __fmt);
-#ifdef _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args);
#else
const int __ret = __builtin_vsprintf(__out, __fmt, __args);
Index: b/libstdc++-v3/include/bits/basic_string.h
===================================================================
--- a/libstdc++-v3/include/bits/basic_string.h
+++ b/libstdc++-v3/include/bits/basic_string.h
@@ -2843,7 +2843,7 @@
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
-#if __cplusplus >= 201103L && defined(_GLIBCXX_USE_C99)
+#if __cplusplus >= 201103L && (defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__))
#include <ext/string_conversions.h>
Index: b/libstdc++-v3/include/bits/locale_facets_nonio.tcc
===================================================================
--- a/libstdc++-v3/include/bits/locale_facets_nonio.tcc
+++ b/libstdc++-v3/include/bits/locale_facets_nonio.tcc
@@ -572,7 +572,7 @@
{
const locale __loc = __io.getloc();
const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
-#ifdef _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
// First try a buffer perhaps big enough.
int __cs_size = 64;
char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
Index: b/libstdc++-v3/include/bits/locale_facets.tcc
===================================================================
--- a/libstdc++-v3/include/bits/locale_facets.tcc
+++ b/libstdc++-v3/include/bits/locale_facets.tcc
@@ -987,7 +987,7 @@
char __fbuf[16];
__num_base::_S_format_float(__io, __fbuf, __mod);
-#ifdef _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
// First try a buffer perhaps big enough (most probably sufficient
// for non-ios_base::fixed outputs)
int __cs_size = __max_digits * 3;
Index: b/libstdc++-v3/include/c_compatibility/math.h
===================================================================
--- a/libstdc++-v3/include/c_compatibility/math.h
+++ b/libstdc++-v3/include/c_compatibility/math.h
@@ -56,7 +56,7 @@
using std::floor;
using std::fmod;
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
using std::fpclassify;
using std::isfinite;
using std::isinf;
Index: b/libstdc++-v3/include/c_compatibility/wchar.h
===================================================================
--- a/libstdc++-v3/include/c_compatibility/wchar.h
+++ b/libstdc++-v3/include/c_compatibility/wchar.h
@@ -103,7 +103,7 @@
using std::wmemset;
using std::wcsftime;
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
using std::wcstold;
using std::wcstoll;
using std::wcstoull;
Index: b/libstdc++-v3/include/c_global/cstdio
===================================================================
--- a/libstdc++-v3/include/c_global/cstdio
+++ b/libstdc++-v3/include/c_global/cstdio
@@ -146,7 +146,7 @@
using ::vsprintf;
} // namespace
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
#undef snprintf
#undef vfscanf
Index: b/libstdc++-v3/include/c_global/cstdlib
===================================================================
--- a/libstdc++-v3/include/c_global/cstdlib
+++ b/libstdc++-v3/include/c_global/cstdlib
@@ -182,7 +182,7 @@
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
#undef _Exit
#undef llabs
Index: b/libstdc++-v3/include/c_global/cwchar
===================================================================
--- a/libstdc++-v3/include/c_global/cwchar
+++ b/libstdc++-v3/include/c_global/cwchar
@@ -232,7 +232,7 @@
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
#undef wcstold
#undef wcstoll
@@ -289,7 +289,7 @@
using std::vwscanf;
#endif
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
using std::wcstold;
using std::wcstoll;
using std::wcstoull;
Index: b/libstdc++-v3/include/c_std/cstdio
===================================================================
--- a/libstdc++-v3/include/c_std/cstdio
+++ b/libstdc++-v3/include/c_std/cstdio
@@ -144,7 +144,7 @@
using ::vsprintf;
} // namespace std
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
#undef snprintf
#undef vfscanf
Index: b/libstdc++-v3/include/c_std/cstdlib
===================================================================
--- a/libstdc++-v3/include/c_std/cstdlib
+++ b/libstdc++-v3/include/c_std/cstdlib
@@ -180,7 +180,7 @@
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
#undef _Exit
#undef llabs
Index: b/libstdc++-v3/include/c_std/cwchar
===================================================================
--- a/libstdc++-v3/include/c_std/cwchar
+++ b/libstdc++-v3/include/c_std/cwchar
@@ -228,7 +228,7 @@
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
#undef wcstold
#undef wcstoll
Index: b/libstdc++-v3/include/ext/vstring.h
===================================================================
--- a/libstdc++-v3/include/ext/vstring.h
+++ b/libstdc++-v3/include/ext/vstring.h
@@ -2680,7 +2680,7 @@
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
-#if ((__cplusplus >= 201103L) && defined(_GLIBCXX_USE_C99))
+#if ((__cplusplus >= 201103L) && (defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)))
#include <ext/string_conversions.h>
Index: b/libstdc++-v3/include/tr1/cstdio
===================================================================
--- a/libstdc++-v3/include/tr1/cstdio
+++ b/libstdc++-v3/include/tr1/cstdio
@@ -33,7 +33,7 @@
#include <cstdio>
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
namespace std _GLIBCXX_VISIBILITY(default)
{
Index: b/libstdc++-v3/include/tr1/cstdlib
===================================================================
--- a/libstdc++-v3/include/tr1/cstdlib
+++ b/libstdc++-v3/include/tr1/cstdlib
@@ -35,7 +35,7 @@
#if _GLIBCXX_HOSTED
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
namespace std _GLIBCXX_VISIBILITY(default)
{
Index: b/libstdc++-v3/include/tr1/cwchar
===================================================================
--- a/libstdc++-v3/include/tr1/cwchar
+++ b/libstdc++-v3/include/tr1/cwchar
@@ -52,7 +52,7 @@
using std::vwscanf;
#endif
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
using std::wcstold;
using std::wcstoll;
using std::wcstoull;
Index: b/libstdc++-v3/include/tr1/stdlib.h
===================================================================
--- a/libstdc++-v3/include/tr1/stdlib.h
+++ b/libstdc++-v3/include/tr1/stdlib.h
@@ -33,7 +33,7 @@
#if _GLIBCXX_HOSTED
-#if _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
using std::tr1::atoll;
using std::tr1::strtoll;
Index: b/libstdc++-v3/src/c++11/debug.cc
===================================================================
--- a/libstdc++-v3/src/c++11/debug.cc
+++ b/libstdc++-v3/src/c++11/debug.cc
@@ -788,7 +788,7 @@
int __n __attribute__ ((__unused__)),
const char* __fmt, _Tp __s) const throw ()
{
-#ifdef _GLIBCXX_USE_C99
+#if defined(_GLIBCXX_USE_C99) || defined(__UCLIBC__)
std::snprintf(__buf, __n, __fmt, __s);
#else
std::sprintf(__buf, __fmt, __s);
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