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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/97933] New: [11 Regression] Bootstrap failure on
 s390x-linux
Date: Sat, 21 Nov 2020 16:03:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97933

            Bug ID: 97933
           Summary: [11 Regression] Bootstrap failure on s390x-linux
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jakub at gcc dot gnu.org
  Target Milestone: ---

../configure --target s390x-linux-gnu --enable-languages=3Dc,c++
--enable-checking=3Drelease --disable-multilib --with-system-zlib
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-ob=
ject
--enable-linker-build-id --with-gcc-major-version-only
--with-linker-hash-style=3Dgnu --enable-plugin --enable-initfini-array --wi=
th-isl
--enable-gnu-indirect-function --with-long-double-128 --with-arch=3DzEC12
--with-tune=3Dz13 --enable-decimal-float
fails both profiledbootstrap and bootstrap (no LTO in either case), while
building stage2 libgcc.  The ICE is e.g. on decDouble.c:
Program received signal SIGSEGV, Segmentation fault.
0x00000000014b4012 in ipa_sra_function_summaries::duplicate(cgraph_node*,
cgraph_node*, isra_func_summary*, isra_func_summary*) ()
Missing separate debuginfos, use: dnf debuginfo-install gmp-6.2.0-5.fc34.s3=
90x
isl-0.16.1-12.fc33.s390x libmpc-1.2.1-1.fc34.s390x libzstd-1.4.5-6.fc34.s39=
0x
mpfr-4.1.0-2.fc33.s390x zlib-1.2.11-23.fc34.s390x
(gdb) up
#1  0x00000000014bec9c in
function_summary<isra_func_summary*>::symtab_duplication(cgraph_node*,
cgraph_node*, void*) ()
(gdb)=20
#2  0x00000000012e7a34 in
symbol_table::call_cgraph_duplication_hooks(cgraph_node*, cgraph_node*) ()
(gdb) down
#1  0x00000000014bec9c in
function_summary<isra_func_summary*>::symtab_duplication(cgraph_node*,
cgraph_node*, void*) ()
(gdb)=20
#0  0x00000000014b4012 in ipa_sra_function_summaries::duplicate(cgraph_node=
*,
cgraph_node*, isra_func_summary*, isra_func_summary*) ()
(gdb)=20
Bottom (innermost) frame selected; you cannot go down.
(gdb) bt
#0  0x00000000014b4012 in ipa_sra_function_summaries::duplicate(cgraph_node=
*,
cgraph_node*, isra_func_summary*, isra_func_summary*) ()
#1  0x00000000014bec9c in
function_summary<isra_func_summary*>::symtab_duplication(cgraph_node*,
cgraph_node*, void*) ()
#2  0x00000000012e7a34 in
symbol_table::call_cgraph_duplication_hooks(cgraph_node*, cgraph_node*) ()
#3  0x00000000012fd466 in cgraph_node::create_virtual_clone(vec<cgraph_edge=
*,
va_heap, vl_ptr>, vec<ipa_replace_map*, va_gc, vl_embed>*,
ipa_param_adjustments*, char const*, unsigned int) ()
#4  0x00000000014b7b90 in (anonymous
namespace)::pass_ipa_sra::execute(function*) ()
#5  0x0000000001631dac in execute_one_pass(opt_pass*) ()
#6  0x0000000001632dce in execute_ipa_pass_list(opt_pass*) ()
#7  0x00000000012f7140 in symbol_table::compile() [clone .part.0] ()
#8  0x00000000012f9610 in symbol_table::finalize_compilation_unit() ()
#9  0x0000000001706ad6 in compile_file() ()
#10 0x00000000011731bc in toplev::main(int, char**) ()
#11 0x00000000011750d8 in main ()
stage1 cc1 doesn't ICE though, nor can reproduce it in a cross-compiler from
x86_64-linux (not even with valgrind annotations under valgrind), so maybe
stage2 is miscompiled.=