Date: Mon, 23 Mar 2020 18:34:40 +0000 From: bugzilla-noreply@freebsd.org To: toolchain@FreeBSD.org Subject: [Bug 245006] toolchain: clang issues bogus "warning: multi-line // comment [-Wcomment]" Message-ID: <bug-245006-29464-Fncbpwm145@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-245006-29464@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=245006 Dimitry Andric <dim@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dim@FreeBSD.org Status|New |Open --- Comment #3 from Dimitry Andric <dim@FreeBSD.org> --- Apparently gcc thinks the same, you just have to add -Wcomment: $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc9/gcc/x86_64-portbld-freebsd13.0/9.2.0/lto-wrapper Target: x86_64-portbld-freebsd13.0 Configured with: /wrkdirs/share/dim/ports/lang/gcc9/work/gcc-9.2.0/configure --enable-multilib --enable-plugin --disable-bootstrap --disable-nls --enable-gnu-indirect-function --libdir=/usr/local/lib/gcc9 --libexecdir=/usr/local/libexec/gcc9 --program-suffix=9 --with-as=/usr/local/bin/as --with-gmp=/usr/local --with-gxx-include-dir=/usr/local/lib/gcc9/include/c++/ --with-ld=/usr/local/bin/ld --with-pkgversion='FreeBSD Ports Collection' --with-system-zlib --with-isl=/usr/local --enable-languages=c,c++,objc,fortran --prefix=/usr/local --localstatedir=/var --mandir=/usr/local/man --infodir=/usr/local/share/info/gcc9 --build=x86_64-portbld-freebsd13.0 Thread model: posix gcc version 9.2.0 (FreeBSD Ports Collection) $ gcc -Wcomment -c multiline.c multiline.c:1:1: warning: multi-line comment [-Wcomment] 1 | // \ | ^ And similar for gcc 4.8, 7.5 and 8.3. I am unsure about the interpretation of the various standards though, as they do not say much, if anything, about warnings. The construct is completely legal, so it causes no errors unless you insist on making all warnings errors. Maybe you can report this upstream with gcc and clang, to see what their opinion is? I am hesitant to make changes to our versions unless there is a pressing need to do so. -- You are receiving this mail because: You are on the CC list for the bug.help
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