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from 1f8d01eb147 libstdc++: One more change for Clang to support constexpr s [...] new 5faf1c8c7ab libstdc++: Use __is_single_threaded in locale initialization new be08d573177 libstdc++: Improve tests for stringstream constructors in C++20 new f573d35147c analyzer: fix false leak due to overeager state merging [PR103217]

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Summary of changes: gcc/analyzer/engine.cc | 10 +- gcc/analyzer/program-state.cc | 9 +- gcc/analyzer/program-state.h | 3 +- gcc/analyzer/region-model.cc | 33 +++++- gcc/analyzer/region-model.h | 20 +++- gcc/analyzer/svalue.cc | 8 ++ gcc/testsuite/gcc.dg/analyzer/explode-1.c | 4 +- gcc/testsuite/gcc.dg/analyzer/pr103217.c | 42 +++++++ gcc/testsuite/gcc.dg/analyzer/pr94858-1.c | 2 + libstdc++-v3/src/c++98/locale_init.cc | 11 +- .../27_io/basic_istringstream/cons/char/1.cc | 119 +++++++++++++++++--- .../27_io/basic_istringstream/cons/wchar_t/1.cc | 119 +++++++++++++++++--- .../27_io/basic_ostringstream/cons/char/1.cc | 121 +++++++++++++++++--- .../27_io/basic_ostringstream/cons/wchar_t/1.cc | 122 ++++++++++++++++++--- .../27_io/basic_stringstream/cons/char/1.cc | 121 +++++++++++++++++--- .../27_io/basic_stringstream/cons/wchar_t/1.cc | 119 +++++++++++++++++--- 16 files changed, 759 insertions(+), 104 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/analyzer/pr103217.c