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https://github.com/rui314/mold.git
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52 lines
1.1 KiB
C++
52 lines
1.1 KiB
C++
#include "mold.h"
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#include <cstdlib>
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#ifndef _WIN32
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#include <cxxabi.h>
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#endif
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#include "third-party/rust-demangle/rust-demangle.h"
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namespace mold {
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std::string_view demangle(std::string_view name) {
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static thread_local char *p;
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if (p)
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free(p);
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// Try to demangle as a Rust symbol. Since legacy-style Rust symbols
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// are also valid as a C++ mangled name, we need to call this before
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// cpp_demangle.
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p = rust_demangle(std::string(name).c_str(), 0);
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if (p)
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return p;
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// Try to demangle as a C++ symbol.
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if (std::optional<std::string_view> s = cpp_demangle(name))
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return *s;
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return name;
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}
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std::optional<std::string_view> cpp_demangle(std::string_view name) {
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static thread_local char *buf;
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static thread_local size_t buflen;
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// TODO(cwasser): Actually demangle Symbols on Windows using e.g.
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// `UnDecorateSymbolName` from Dbghelp, maybe even Itanium symbols?
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#ifndef _WIN32
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if (name.starts_with("_Z")) {
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int status;
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char *p = abi::__cxa_demangle(std::string(name).c_str(), buf, &buflen, &status);
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if (status == 0) {
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buf = p;
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return p;
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}
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}
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#endif
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return {};
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}
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} // namespace mold
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