diff options
Diffstat (limited to 'qpid/cpp/src')
| -rw-r--r-- | qpid/cpp/src/qpid/types/Variant.cpp | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/qpid/cpp/src/qpid/types/Variant.cpp b/qpid/cpp/src/qpid/types/Variant.cpp index 139ddc7ab4..8c9837e765 100644 --- a/qpid/cpp/src/qpid/types/Variant.cpp +++ b/qpid/cpp/src/qpid/types/Variant.cpp @@ -110,22 +110,28 @@ class VariantImpl } value; std::string encoding;//optional encoding for variable length data - template<class T> T convertFromString() const + template<class T> T convertFromString() const { const std::string& s = *value.string; try { - T r = boost::lexical_cast<T>(s); - //lexical_cast won't fail if string is a negative number and T is unsigned - //So check that and allow special case of negative zero - //else its a non-zero negative number so throw exception at end of function - if (std::numeric_limits<T>::is_signed || s.find('-') != 0 || r == 0) { - return r; + // Extra shenanigans to work around negative zero + // conversion error in older GCC libs. + if ( s[0] != '-' ) { + return boost::lexical_cast<T>(s); + } else { + T r = boost::lexical_cast<T>(s.substr(1)); + if (std::numeric_limits<T>::is_signed) { + return -r; + } else { + if (r==0) return 0; + } } } catch(const boost::bad_lexical_cast&) { } throw InvalidConversion(QPID_MSG("Cannot convert " << s)); } + }; |