https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86770
Bug ID: 86770
Summary: UNRESOLVED: 30_threads/call_once/call_once1.cc
compilation failed to produce executable
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: link-failure
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: belyshev at depni dot sinp.msu.ru
Target Milestone: ---
Target: riscv64-unknown-linux-gnu
Everything under 30_threads/ fail to link on riscv with -Wl,--gc-sections.
Short testcase:
$ cat > bug.cc <<EOF
namespace std { extern __thread void *__once_callable; }
int main (void) { return !!std::__once_callable; }
EOF
$ g++ bug.cc -Wl,--gc-sections
`_ZSt15__once_callable@@GLIBCXX_3.4.11' referenced in section `.text' of
/tmp/cc1DaRxp.o: defined in discarded section `.tdata.dyn' of
/usr/lib64/lp64d/crt1.o
collect2: error: ld returned 1 exit status
$
Not a regression, fails also on 8 and 7 branches.
