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Limit __cxa_uncaught_exceptions to only since libc++abi 1002 and later.

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This commit is contained in:
Andrey Semashev
2019-01-07 13:34:52 +03:00
parent cdcc50a455
commit 9f9da9dc9b
1 changed files with 3 additions and 2 deletions
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5
include/boost/core/uncaught_exceptions.hpp
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@ -50,13 +50,14 @@
#include <cxxabi.h> #include <cxxabi.h>
// On Linux with clang and libc++, there is a version of cxxabi.h from libc++-abi that doesn't declare __cxa_get_globals, but provides __cxa_uncaught_exceptions. // On Linux with clang and libc++, there is a version of cxxabi.h from libc++-abi that doesn't declare __cxa_get_globals, but provides __cxa_uncaught_exceptions.
#if defined(_LIBCPPABI_VERSION) // The function only appeared in version 1002.
#if defined(_LIBCPPABI_VERSION) && _LIBCPPABI_VERSION >= 1002
#define BOOST_CORE_HAS_CXA_UNCAUGHT_EXCEPTIONS #define BOOST_CORE_HAS_CXA_UNCAUGHT_EXCEPTIONS
#else #else
#define BOOST_CORE_HAS_CXA_GET_GLOBALS #define BOOST_CORE_HAS_CXA_GET_GLOBALS
// On MinGW only GCC 4.7 declares __cxa_get_globals() in cxxabi.h, older compilers do not expose this function but it's there. // On MinGW only GCC 4.7 declares __cxa_get_globals() in cxxabi.h, older compilers do not expose this function but it's there.
// Note that at least on FreeBSD 11, cxxabi.h declares __cxa_get_globals with a different exception specification, so we can't declare the function unconditionally. // Note that at least on FreeBSD 11, cxxabi.h declares __cxa_get_globals with a different exception specification, so we can't declare the function unconditionally.
#if (defined(__MINGW32__) && defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 407) #if (defined(__MINGW32__) && defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 407) || defined(_LIBCPPABI_VERSION)
namespace __cxxabiv1 { namespace __cxxabiv1 {
struct __cxa_eh_globals; struct __cxa_eh_globals;
extern "C" __cxa_eh_globals* __cxa_get_globals() BOOST_NOEXCEPT_OR_NOTHROW __attribute__((__const__)); extern "C" __cxa_eh_globals* __cxa_get_globals() BOOST_NOEXCEPT_OR_NOTHROW __attribute__((__const__));