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Both of these bound a non-const reference to a temporary, which MSVC accepts
and clang does not, and which leaves the reference dangling once the full
expression ends.
PropertyContainer::initFromXMLFile and writeToXMLFile take their tag map by
non-const reference because the accessors on it insert default tag names as
they are asked for, so it cannot be const and it cannot be a temporary. All
eight call sites passed a freshly built one; they now declare it. Each keeps
its own object, so a map filled in by one call cannot leak into the next, the
same as when each call built its own temporary.
XMLWriter::writeToFile bound std::string& to what stringstream::str() returns
by value. Declared as a value it is initialised straight from the return with
no copy, and const because only c_str() and length() are asked of it.
Verification:
grep -rn 'PropertyContainer::TagMap()' . # nothing
ninja -C build parse # no i18n or XMLWriter sites remain
ninja -C build -k 0 # Release, four applications, green
ninja -C build-debug -k 0 # Debug, four applications, green
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>