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In errno_md, for Sun and HP, always use strerror because it is always available and always thread safe on those systems. Linux, provide macro since there is no way to tell if available at runtime.

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[SVN r36447]
This commit is contained in:
Beman Dawes
2006-12-18 12:44:08 +00:00
parent 5688d4a3a2
commit 2fbf2718c4
1 changed files with 9 additions and 1 deletions
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10
src/error_code.cpp
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@@ -182,7 +182,15 @@ namespace
std::string errno_md( const error_code & ec )
{
# if defined(BOOST_WINDOWS_API) || defined(__hpux) || (defined(__linux) && !defined(__USE_XOPEN2K))
// strerror_r is preferred because it is always thread safe,
// however, we fallback to strerror in certain cases because:
// -- Windows doesn't provide strerror_r.
// -- HP and Sundo provide strerror_r on newer systems, but there is
// no way to tell if is available at runtime and in any case their
// versions of strerror are thread safe anyhow.
// -- Linux only sometimes provides strerror_r.
# if defined(BOOST_WINDOWS_API) || defined(__hpux) || defined(__sun)\
|| (defined(__linux) && (!defined(__USE_XOPEN2K) || defined(BOOST_SYSTEM_USE_STRERROR)))
const char * c_str = std::strerror( ec.value() );
return std::string( c_str ? c_str : "EINVAL" );
# else