Viktor Szakats 3829759bd0 build: enable missing OpenSSF-recommended warnings, with fixes ... https://best.openssf.org/Compiler-Hardening-Guides/Compiler-Options-Hardening-Guide-for-C-and-C++.html as of 2023-11-29 [1]. Enable new recommended warnings (except `-Wsign-conversion`): - enable `-Wformat=2` for clang (in both cmake and autotools). - add `CURL_PRINTF()` internal attribute and mark functions accepting printf arguments with it. This is a copy of existing `CURL_TEMP_PRINTF()` but using `__printf__` to make it compatible with redefinting the `printf` symbol: https://gcc.gnu.org/onlinedocs/gcc-3.0.4/gcc_5.html#SEC94 - fix `CURL_PRINTF()` and existing `CURL_TEMP_PRINTF()` for mingw-w64 and enable it on this platform. - enable `-Wimplicit-fallthrough`. - enable `-Wtrampolines`. - add `-Wsign-conversion` commented with a FIXME. - cmake: enable `-pedantic-errors` the way we do it with autotools. Follow-up to d5c0351055 #2747 - lib/curl_trc.h: use `CURL_FORMAT()`, this also fixes it to enable format checks. Previously it was always disabled due to the internal `printf` macro. Fix them: - fix bug where an `set_ipv6_v6only()` call was missed in builds with `--disable-verbose` / `CURL_DISABLE_VERBOSE_STRINGS=ON`. - add internal `FALLTHROUGH()` macro. - replace obsolete fall-through comments with `FALLTHROUGH()`. - fix fallthrough markups: Delete redundant ones (showing up as warnings in most cases). Add missing ones. Fix indentation. - silence `-Wformat-nonliteral` warnings with llvm/clang. - fix one `-Wformat-nonliteral` warning. - fix new `-Wformat` and `-Wformat-security` warnings. - fix `CURL_FORMAT_SOCKET_T` value for mingw-w64. Also move its definition to `lib/curl_setup.h` allowing use in `tests/server`. - lib: fix two wrongly passed string arguments in log outputs. Co-authored-by: Jay Satiro - fix new `-Wformat` warnings on mingw-w64. [1] 56c0fde389/docs/Compiler-Hardening-Guides/Compiler-Options-Hardening-Guide-for-C-and-C%2B%2B.md Closes #12489		2023-12-16 13:12:37 +00:00
..
curl_msh3.c	lib: eliminate conn->cselect_bits	2023-12-14 15:20:05 +01:00
curl_msh3.h
curl_ngtcp2.c	lib: eliminate conn->cselect_bits	2023-12-14 15:20:05 +01:00
curl_ngtcp2.h
curl_quiche.c	lib: eliminate conn->cselect_bits	2023-12-14 15:20:05 +01:00
curl_quiche.h
vquic_int.h	quic: manage connection idle timeouts	2023-10-13 23:15:47 +02:00
vquic.c	build: enable missing OpenSSF-recommended warnings, with fixes	2023-12-16 13:12:37 +00:00
vquic.h