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--- a/libstdc++-v3/src/c++17/floating_from_chars.cc
+++ b/libstdc++-v3/src/c++17/floating_from_chars.cc
@@ -495,10 +495,16 @@
from_chars(const char* first, const char* last, __ieee128& value,
chars_format fmt) noexcept
{
+ errc ec = errc::invalid_argument;
+#if _GLIBCXX_USE_CXX11_ABI
buffer_resource mr;
pmr::string buf(&mr);
+#else
+ string buf;
+ if (!reserve_string(buf))
+ return make_result(first, 0, {}, ec);
+#endif
size_t len = 0;
- errc ec = errc::invalid_argument;
__try
{
if (const char* pat = pattern(first, last, fmt, buf)) [[likely]]
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