https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88063
--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> --- Created attachment 45027 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45027&action=edit Detection patch Output: ... $ ./btest 2>&1 | sed 's%/.*/%%' alloc at state.c:66: addr: 0x7f9addf62000, size: 72, allocs: 1 alloc at backtrace.c:118: addr: 0x7f9addf61000, size: 4096, allocs: 2 free at backtrace.c:123: addr: 0x7f9addf61000, size: 4096, allocs: 1 alloc at elf.c:2952: addr: 0x7f9addf61000, size: 24, allocs: 2 alloc at elf.c:622: addr: 0x7f9addf57000, size: 5160, allocs: 3 alloc at elf.c:836: addr: 0x7f9addf58428, size: 73, allocs: 4 free at elf.c:861: addr: 0x7f9addf58428, size: 73, allocs: 3 alloc at dwarf.c:1074: addr: 0x7f9addf58428, size: 32, allocs: 4 alloc at dwarf.c:1116: addr: 0x7f9addf58478, size: 56, allocs: 5 alloc at dwarf.c:1481: addr: 0x7f9addf584b0, size: 120, allocs: 6 alloc at dwarf.c:1074: addr: 0x7f9addf586a8, size: 160, allocs: 7 alloc at dwarf.c:1116: addr: 0x7f9addf58748, size: 40, allocs: 8 alloc at dwarf.c:1116: addr: 0x7f9addf58770, size: 24, allocs: 9 alloc at dwarf.c:1116: addr: 0x7f9addf58788, size: 24, allocs: 10 alloc at dwarf.c:1116: addr: 0x7f9addf587a0, size: 8, allocs: 11 alloc at dwarf.c:1116: addr: 0x7f9addf587a8, size: 48, allocs: 12 alloc at dwarf.c:1481: addr: 0x7f9addf587d8, size: 120, allocs: 13 free at dwarf.c:646: addr: 0x7f9addf58748, size: 40, allocs: 12 free at dwarf.c:646: addr: 0x7f9addf58770, size: 24, allocs: 11 free at dwarf.c:646: addr: 0x7f9addf58788, size: 24, allocs: 10 free at dwarf.c:646: addr: 0x7f9addf587a0, size: 8, allocs: 9 free at dwarf.c:646: addr: 0x7f9addf587a8, size: 48, allocs: 8 free at dwarf.c:649: addr: 0x7f9addf586a8, size: 160, allocs: 7 free at dwarf.c:1510: addr: 0x7f9addf587d8, size: 120, allocs: 6 free at dwarf.c:649: addr: (nil), size: 0, allocs: 6 free at dwarf.c:646: addr: 0x7f9addf58478, size: 56, allocs: 5 free at dwarf.c:649: addr: 0x7f9addf58428, size: 32, allocs: 4 Expected 3 allocs, but have: 4 ... This is the struct unit alloc without corresponding free: ... alloc at dwarf.c:1481: addr: 0x7f9addf584b0, size: 120, allocs: 6 ...
