[Bug ipa/99003] New: memory leak in IPA ICF

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99003

            Bug ID: 99003
           Summary: memory leak in IPA ICF
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

==1945== Memcheck, a memory error detector
==1945== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==1945== Using Valgrind-3.15.0 and LibVEX; rerun with -h for copyright info
==1945== Command: ./cc1 -quiet -fdiagnostics-plain-output -O3 -o
ssa-dom-thread-1.s
/home/rguenther/src/gcc3/gcc/testsuite/gcc.dg/tree-ssa/20030714-1.c
==1945==
==1945==
==1945== HEAP SUMMARY:
==1945==     in use at exit: 1,973,344 bytes in 2,924 blocks
==1945==   total heap usage: 52,587 allocs, 49,663 frees, 19,998,193 bytes
allocated
==1945==
==1945== 16 bytes in 1 blocks are definitely lost in loss record 9 of 785
==1945==    at 0x4C2E94F: operator new(unsigned long) (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==1945==    by 0x263B75A:
ipa_icf::sem_item::add_reference(hash_map<ipa_icf::sem_usage_hash,
auto_vec<ipa_icf::sem_item*, 0ul>,
simple_hashmap_traits<default_hash_traits<ipa_icf::sem_usage_hash>,
auto_vec<ipa_icf::sem_item*, 0ul> > >*, ipa_icf::sem_item*) (ipa-icf.c:169)
==1945==    by 0x264556E: ipa_icf::sem_item_optimizer::build_graph()
(ipa-icf.c:2642)
==1945==    by 0x26448AF: ipa_icf::sem_item_optimizer::execute()
(ipa-icf.c:2423)
==1945==    by 0x2648932: ipa_icf::ipa_icf_driver() (ipa-icf.c:3584)
==1945==    by 0x264B206: ipa_icf::pass_ipa_icf::execute(function*)
(ipa-icf.c:3631)
==1945==    by 0x12E8130: execute_one_pass(opt_pass*) (passes.c:2572)
==1945==    by 0x12E90C8: execute_ipa_pass_list(opt_pass*) (passes.c:3001)
==1945==    by 0xCFCB79: ipa_passes() (cgraphunit.c:2215)
==1945==    by 0xCFCE0C: symbol_table::compile() (cgraphunit.c:2292)
==1945==    by 0xCFD379: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2540)
==1945==    by 0x148FF21: compile_file() (toplev.c:482)