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Fix for non-cleared static stream in some cases

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Henry Fredrick Schreiner 2018-04-03 09:32:31 +02:00 committed by Henry Schreiner
parent db202b831e
commit ae3b5a69c7
1 changed files with 2 additions and 1 deletions
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3
include/CLI/TypeTools.hpp
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@ -140,11 +140,12 @@ template <typename T,
bool lexical_cast(std::string input, T &output) {
// On GCC 4.7, thread_local is not available, so this optimization
// is turned off (avoiding multiple initialisations on multiple usages
// is turned off (avoiding multiple initialisations on multiple usages)
#if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER) && __GNUC__ == 4 && (__GNUC_MINOR__ < 8)
std::istringstream is;
#else
static thread_local std::istringstream is;
is.clear();
#endif
is.str(input);