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Add support for versioned standard libraries.

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This canonicalizes demangled names by omitting a nested inline namespace within namespace std if the name of the nested namespace begins with a double underscore.  This improves compatibility with libc++.
This commit is contained in:
James Dennett 2018-05-10 22:39:19 -07:00 committed by GitHub
parent fc66ae45fc
commit 54e331b88b
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1 changed files with 18 additions and 2 deletions
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googletest/include/gtest/internal/gtest-type-util.h.pump
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@ -54,6 +54,22 @@ $var n = 50 $$ Maximum length of type lists we want to support.
namespace testing {
namespace internal {
// Canonicalizes a given name with respect to the Standard C++ Library.
// This handles removing the inline namespace within `std` that is
// used by various standard libraries (e.g., `std::__1`). Names outside
// of namespace std are returned unmodified.
inline std::string CanonicalizeForStdLibVersioning(std::string s) {
static constexpr char prefix[] = "std::__";
if (s.compare(0, strlen(prefix), prefix) == 0) {
auto end = s.find("::", strlen(prefix));
if (end != s.npos) {
// Erase the `::__` plus whatever was between that and the next `::`.
s.erase(strlen("std"), strlen("::__") + end - strlen(prefix));
}
}
return s;
}
// GetTypeName<T>() returns a human-readable name of type T.
// NB: This function is also used in Google Mock, so don't move it inside of
@ -71,9 +87,9 @@ std::string GetTypeName() {
using abi::__cxa_demangle;
# endif // GTEST_HAS_CXXABI_H_
char* const readable_name = __cxa_demangle(name, 0, 0, &status);
const std::string name_str(status == 0 ? readable_name : name);
std::string name_str(status == 0 ? readable_name : name);
free(readable_name);
return name_str;
return CanonicalizeForStdLibVersioning(std::move(name_str));
# else
return name;
# endif // GTEST_HAS_CXXABI_H_ || __HP_aCC