From f8463b0e3ec2438b4cfb8c9a468d59761db2c8a0 Mon Sep 17 00:00:00 2001 From: Jonathan Wakely Date: Thu, 2 Dec 2021 13:19:41 +0000 Subject: [PATCH] libstdc++: Disable over-zealous warnings about std::string copies [PR103332] These warnings are triggered by perfectly valid code using std::string. They're particularly bad when --enable-fully-dynamic-string is used, because even std::string().begin() will give a warning. Use pragmas to stop the troublesome warnings for copies done by std::char_traits. libstdc++-v3/ChangeLog: PR libstdc++/103332 PR libstdc++/102958 PR libstdc++/103483 * include/bits/char_traits.h: Suppress stringop and array-bounds warnings. --- libstdc++-v3/include/bits/char_traits.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/libstdc++-v3/include/bits/char_traits.h b/libstdc++-v3/include/bits/char_traits.h index da3e0ff..3f7befc 100644 --- a/libstdc++-v3/include/bits/char_traits.h +++ b/libstdc++-v3/include/bits/char_traits.h @@ -54,6 +54,11 @@ namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wstringop-overflow" +#pragma GCC diagnostic ignored "-Wstringop-overread" +#pragma GCC diagnostic ignored "-Warray-bounds" + /** * @brief Mapping from character type to associated types. * @@ -990,6 +995,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION } // namespace __detail #endif // C++20 +#pragma GCC diagnostic push + _GLIBCXX_END_NAMESPACE_VERSION } // namespace -- 2.7.4