This change addresses the following issue raised on the libc-alpha mailing list: https://sourceware.org/pipermail/libc-alpha/2022-July/140825.html Glibc 2.36 adds a char8_t typedef in C++ modes that do not enable the char8_t builtin type (C++17 and earlier by default; subject to _GNU_SOURCE and use of the -f[no-]char8_t option). When -Wc++20-compat diagnostics are enabled, the following warning is issued from the glibc uchar.h header. warning: identifier ‘char8_t’ is a keyword in C++20 [-Wc++20-compat] Such diagnostics are not desired from system headers, so glibc would like to suppress the diagnostic using '#pragma GCC diagnostic ignored "-Wc++20-compat"', but attempting to do so currently fails. This patch corrects that.
Tom Honermann (1): c++/106423: Fix pragma suppression of -Wc++20-compat diagnostics. gcc/c-family/c-opts.cc | 7 +++++++ gcc/c-family/c.opt | 2 +- gcc/testsuite/g++.dg/cpp0x/keywords2.C | 16 ++++++++++++++++ gcc/testsuite/g++.dg/cpp2a/keywords2.C | 13 +++++++++++++ libcpp/include/cpplib.h | 4 ++++ libcpp/init.cc | 1 + 6 files changed, 42 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/g++.dg/cpp0x/keywords2.C create mode 100644 gcc/testsuite/g++.dg/cpp2a/keywords2.C -- 2.32.0
