https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77962
Bug ID: 77962
Summary: [7 Regression] Bootstrap failure on x86_64-linux
starting with r241063
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
Target Milestone: ---
I'm getting bootstrap (and non-bootstrap) x86_64-linux and i686-linux failures
while building 32-bit libgo. The problem seems to be 2 ICEs during configure,
and -fPIC, -o and -fsplit-stack options aren't detected as supported because of
that. The lack of -o one breaks the build.
Short testcase in x86_64-linux ../configure --disable-bootstrap
--enable-languages=c,c++,go --enable-checking=yes,rtl,extra configured
compiler:
echo 'package main; func main() { }' > conftest.go
./go1 -quiet conftest.go -m32 -O2 -fPIC
conftest.go: In function ‘main.main’:
conftest.go:1:15: internal compiler error: in ix86_expand_epilogue, at
config/i386/i386.c:14213
package main; func main() { }
^
0xfc4f26 ix86_expand_epilogue(int)
../../gcc/config/i386/i386.c:14212
0x11da49f gen_epilogue()
../../gcc/config/i386/i386.md:12654
0xf97da8 target_gen_epilogue
../../gcc/config/i386/i386.md:12165
0x9617dd make_epilogue_seq
../../gcc/function.c:5842
0x9617dd thread_prologue_and_epilogue_insns()
../../gcc/function.c:5940
0x962032 rest_of_handle_thread_prologue_and_epilogue
../../gcc/function.c:6386
0x962032 execute
../../gcc/function.c:6428
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
14212 gcc_assert (!m->fs.sp_valid
14213 || m->fs.sp_offset == frame.stack_pointer_offset);
(gdb) p m->fs.sp_valid
$5 = 1
(gdb) p m->fs.sp_offset
$6 = 12
(gdb) p frame.stack_pointer_offset
$7 = 4
