https://bugs.kde.org/show_bug.cgi?id=473944
--- Comment #2 from Paul Floyd <pjfl...@wanadoo.fr> ---
With the patch I get one regression failure
helgrind/tests/pth_destroy_cond (stderr)
There is missing source information, presumably due to a failure reading
debuginfo.
The first aspacem map is
--54635:1: aspacem <<< SHOW_SEGMENTS: Memory layout at client startup (32
segments)
--54635:1: aspacem 3 segment names in 3 slots
--54635:1: aspacem freelist is empty
--54635:1: aspacem (0,4,7)
/usr/home/paulf/scratch/valgrind/none/none-amd64-freebsd
--54635:1: aspacem (1,65,6)
/usr/home/paulf/scratch/valgrind/helgrind/tests/pth_destroy_cond
--54635:1: aspacem (2,134,7) /libexec/ld-elf.so.1
--54635:1: aspacem 0: RSVN 0000000000-00001fffff 2097152 ----- SmFixed
--54635:1: aspacem 1: file 0000200000-0000200fff 4096 r----
d=0x6d8ca7de696e301b i=2440208 o=0 (1,65)
--54635:1: aspacem 2: file 0000201000-0000201fff 4096 r-x--
d=0x6d8ca7de696e301b i=2440208 o=0 (1,65)
--54635:1: aspacem 3: file 0000202000-0000203fff 8192 rw---
d=0x6d8ca7de696e301b i=2440208 o=0 (1,65)
--54635:1: aspacem 4: RSVN 0000204000-0003ffffff 61m ----- SmFixed
--54635:1: aspacem 5: file 0004000000-0004006fff 28672 r----
d=0x28a8dde4190bc5c i=1049059 o=0 (2,134)
--54635:1: aspacem 6: file 0004007000-000401cfff 90112 r-x--
d=0x28a8dde4190bc5c i=1049059 o=24576 (2,134)
--54635:1: aspacem 7: file 000401d000-000401dfff 4096 rw---
d=0x28a8dde4190bc5c i=1049059 o=110592 (2,134)
--54635:1: aspacem 8: file 000401e000-000401efff 4096 rw---
d=0x28a8dde4190bc5c i=1049059 o=110592 (2,134)
--54635:1: aspacem 9: anon 000401f000-000401ffff 4096 rw---
--54635:1: aspacem 10: anon 0004020000-0004020fff 4096 rwx--
--54635:1: aspacem 11: RSVN 0004021000-000481ffff 8384512 ----- SmLower
--54635:1: aspacem 12: 0004820000-0037ffffff 823m
--54635:1: aspacem 13: FILE 0038000000-00380abfff 704512 r---- d=0x696e301b
i=1844040 o=0 (0,4)
--54635:1: aspacem 14: FILE 00380ac000-0038141fff 614400 r-x-- d=0x696e301b
i=1844040 o=700416 (0,4)
--54635:1: aspacem 15: file 0038142000-0038142fff 4096 r-x-- d=0x696e301b
i=1844040 o=1314816 (0,4)
--54635:1: aspacem 16: FILE 0038143000-003821bfff 888832 r-x-- d=0x696e301b
i=1844040 o=1318912 (0,4)
--54635:1: aspacem 17: FILE 003821c000-003821cfff 4096 rw--- d=0x696e301b
i=1844040 o=2203648 (0,4)
objdump:
paulf> objdump -p pth_destroy_cond
pth_destroy_cond: file format elf64-x86-64-freebsd
Program Header:
PHDR off 0x0000000000000040 vaddr 0x0000000000200040 paddr
0x0000000000200040 align 2**3
filesz 0x0000000000000268 memsz 0x0000000000000268 flags r--
INTERP off 0x00000000000002a8 vaddr 0x00000000002002a8 paddr
0x00000000002002a8 align 2**0
filesz 0x0000000000000015 memsz 0x0000000000000015 flags r--
LOAD off 0x0000000000000000 vaddr 0x0000000000200000 paddr
0x0000000000200000 align 2**12
filesz 0x00000000000008ec memsz 0x00000000000008ec flags r--
LOAD off 0x00000000000008f0 vaddr 0x00000000002018f0 paddr
0x00000000002018f0 align 2**12
filesz 0x0000000000000590 memsz 0x0000000000000590 flags r-x
LOAD off 0x0000000000000e80 vaddr 0x0000000000202e80 paddr
0x0000000000202e80 align 2**12
filesz 0x0000000000000180 memsz 0x0000000000000180 flags rw-
LOAD off 0x0000000000001000 vaddr 0x0000000000203000 paddr
0x0000000000203000 align 2**12
filesz 0x0000000000000098 memsz 0x00000000000000c8 flags rw-
And the trace when running with a couple more I added
--56884-- ++*rw_load_count to 2 for
/usr/home/paulf/scratch/valgrind/helgrind/tests/pth_destroy_cond
--56884-- offset 1000 offset roundup 1000
--56884-- prev + size 203e80 addr 203000
If I change the condition to
if (previous_rw_a_phdr.p_memsz > 0 &&
ehdr_m.e_type == ET_EXEC &&
previous_rw_a_phdr.p_vaddr + previous_rw_a_phdr.p_filesz ==
a_phdr.p_vaddr)
then it works.
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