Bug 2260449

Summary: ICE in process_uses_of_deleted_def, at rtl-ssa/changes.cc:252
Product: [Fedora] Fedora Reporter: Dan Horák <dan>
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: rawhideCC: dmalcolm, fweimer, jakub, jlaw, jwakely, mcermak, mpolacek, msebor, nickc, nixuser, sipoyare
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Hardware: aarch64   
OS: Linux   
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Last Closed: 2024-02-13 11:55:56 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 245418    
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preprocessed sources none

Description Dan Horák 2024-01-26 10:03:13 UTC 
compiling a source file in the EFL project makes gcc crash with an ICE

<mock-chroot> sh-5.2# gcc -O2 -g -o ../src/lib/eo/eo_base_class.o -c ../src/lib/eo/eo_base_class.i
during RTL pass: ldp_fusion
../src/lib/eo/eo_base_class.c: In function ‘_efl_object_destructor’:
../src/lib/eo/eo_base_class.c:2770:1: internal compiler error: in process_uses_of_deleted_def, at rtl-ssa/changes.cc:252
 2770 | }
      | ^
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Preprocessed source stored into /tmp/ccYn3cfX.out file, please attach this to your bugreport.


Removing the -g option makes the issue go away.

Reproducible: Always




gcc-14.0.1-0.3.fc40.aarch64
Comment 1 Dan Horák 2024-01-26 10:03:40 UTC 
Created attachment 2010693 [details]
preprocessed sources
Comment 2 Dan Horák 2024-01-26 10:05:06 UTC 
Thread 2.1 "cc1" hit Breakpoint 1, 0x0000000000d052cc in internal_error(char const*, ...) ()
Missing separate debuginfos, use: dnf debuginfo-install cpp-14.0.1-0.3.fc40.aarch64
(gdb) where
#0  0x0000000000d052cc in internal_error(char const*, ...) ()
#1  0x0000000000d05458 in fancy_abort(char const*, int, char const*) ()
#2  0x0000000000cb6b70 in rtl_ssa::function_info::process_uses_of_deleted_def(rtl_ssa::set_info*) ()
#3  0x000000000150cd24 in rtl_ssa::function_info::change_insns(array_slice<rtl_ssa::insn_change*>) ()
#4  0x00000000015b7908 in ldp_bb_info::try_fuse_pair(bool, unsigned int, rtl_ssa::insn_info*, rtl_ssa::insn_info*) ()
#5  0x000000000187eedc in ldp_bb_info::merge_pairs(std::__cxx11::list<rtl_ssa::insn_info*, std::allocator<rtl_ssa::insn_info*> >&, std::__cxx11::list<rtl_ssa::insn_info*, std::allocator<rtl_ssa::insn_info*> >&, bool, unsigned int) ()
#6  0x00000000014bf1dc in ldp_fusion_bb(rtl_ssa::bb_info*) ()
#7  0x00000000014bd958 in ldp_fusion() ()
#8  0x00000000014bd2f0 in (anonymous namespace)::pass_ldp_fusion::execute(function*) [clone .lto_priv.0] ()
#9  0x0000000000e6c6a4 in execute_one_pass(opt_pass*) ()
#10 0x0000000000f3bf60 in execute_pass_list_1(opt_pass*) ()
#11 0x0000000000f3bf8c in execute_pass_list_1(opt_pass*) ()
#12 0x0000000000f3b748 in execute_pass_list(function*, opt_pass*) ()
#13 0x0000000000fad44c in cgraph_node::expand() ()
#14 0x00000000016517dc in symbol_table::compile() ()
#15 0x000000000164e4a4 in symbol_table::finalize_compilation_unit() ()
#16 0x000000000162d964 in compile_file() [clone .lto_priv.0] ()
#17 0x00000000015d7908 in toplev::main(int, char**) ()
#18 0x00000000015d6e88 in main ()
Comment 3 Jakub Jelinek 2024-01-29 09:24:20 UTC 
Note, in gcc-14.0.1-0.4.fc40 I've applied a workaround - disabled the aarch64 -m{early,late}-ldp-fusion options by default temporarily, until this and another bug are fixed upstream.
Comment 4 Jakub Jelinek 2024-02-13 11:55:56 UTC 
And in gcc-14.0.1-0.6.fc40 it should be fixed for real.