Date: Sat, 7 Oct 2017 00:58:04 -0700 From: Mark Millard <markmi@dsl-only.net> To: Roman Divacky <rdivacky@vlakno.cz> Cc: Justin Hibbits <jrh29@alumni.cwru.edu>, Warner Losh <imp@bsdimp.com>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: C++ in jemalloc Message-ID: <A47AA10A-550B-4E12-97DE-440F892EE7FC@dsl-only.net> In-Reply-To: <20171007064249.GA73770@vlakno.cz> References: <BDC9F954-D0C5-4D7A-9CEA-D4FCA595B2FD@dsl-only.net> <CAHSQbTB76OJYGtwzRRFfThJB5mYOKHi_BC9Eefc7Mn1A0-6sWg@mail.gmail.com> <528ED3CD-8A4B-4F00-8728-7D231DB0811A@dsl-only.net> <20171007064249.GA73770@vlakno.cz>
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On 2017-Oct-6, at 11:42 PM, Roman Divacky <rdivacky at vlakno.cz> wrote: > Just to clarify my not agreeing with Mark regarding EH on ppc64. >=20 > Last time I tried to fix ppc64 exceptions handling as generated by = clang > it turned out that simply using gnu ld from ports fixes the issue. >=20 > For details see: > = https://lists.freebsd.org/pipermail/freebsd-toolchain/2017-May/002961.html= Unfortunately my experiments failed to confirm this. Repeating them now under head -r324071 and ports -r450478 : # more exception_test.cpp=20 #include <exception> int main(void) { try { throw std::exception(); } catch (std::exception& e) {} return 0; } # clang++ -B /usr/local/powerpc64-freebsd/bin -std=3Dc++14 -g -O2 = exception_test.cpp # ./a.out Segmentation fault (core dumped) # clang++ -B /usr/local/powerpc64-freebsd/bin -std=3Dc++11 -g = exception_test.cpp # ./a.out Segmentation fault (core dumped) # ls -lt /usr/local/powerpc64-freebsd/bin total 56704 lrwxr-xr-x 1 root wheel 32 Jul 2 19:27 size -> = ../../bin/powerpc64-freebsd-size -r-xr-xr-x 4 root wheel 7072791 Jul 2 19:27 ld -r-xr-xr-x 4 root wheel 7072791 Jul 2 19:27 ld.bfd -r-xr-xr-x 2 root wheel 6881822 Jul 2 19:27 as -r-xr-xr-x 2 root wheel 6128889 Jul 2 19:27 strip -r-xr-xr-x 2 root wheel 5253417 Jul 2 19:27 nm -r-xr-xr-x 2 root wheel 1284139 Jul 2 19:27 readelf -r-xr-xr-x 2 root wheel 6128882 Jul 2 19:27 objcopy -r-xr-xr-x 2 root wheel 5384166 Jul 2 19:27 ranlib -r-xr-xr-x 2 root wheel 5384159 Jul 2 19:27 ar -r-xr-xr-x 2 root wheel 6914775 Jul 2 19:27 objdump # clang++ -B /usr/local/powerpc64-portbld-freebsd12.0/bin/ -std=3Dc++14 = -g -O2 exception_test.cpp # ./a.out Segmentation fault (core dumped) # clang++ -B /usr/local/powerpc64-portbld-freebsd12.0/bin/ -std=3Dc++11 = -g exception_test.cpp # ./a.out Segmentation fault (core dumped) # ls -lt /usr/local/powerpc64-portbld-freebsd12.0/bin/ total 363584 -r-xr-xr-x 4 root wheel 59993201 Jul 2 23:44 ld -r-xr-xr-x 4 root wheel 59993201 Jul 2 23:44 ld.bfd -r-xr-xr-x 2 root wheel 29843304 Jul 2 23:44 as -r-xr-xr-x 2 root wheel 29046519 Jul 2 23:44 strip -r-xr-xr-x 2 root wheel 28207257 Jul 2 23:44 nm -r-xr-xr-x 2 root wheel 1178483 Jul 2 23:44 readelf -r-xr-xr-x 1 root wheel 28329180 Jul 2 23:44 dlltool -r-xr-xr-x 2 root wheel 29046512 Jul 2 23:44 objcopy -r-xr-xr-x 2 root wheel 28334599 Jul 2 23:44 ranlib -r-xr-xr-x 2 root wheel 28334592 Jul 2 23:44 ar -r-xr-xr-x 2 root wheel 49540244 Jul 2 23:44 objdump =3D=3D=3D Mark Millard markmi at dsl-only.net
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