On 2019年05月24日 14:23, Mark Wielaard wrote:
On Fri, May 24, 2019 at 11:00:57AM +0800, Yu, Mingli wrote:
On 2019年05月23日 19:50, Mark Wielaard wrote:
# ./tests/test-nlist
nlist failed
You are supposed to run it with make check.
make check TESTS=test-nlist
test-nlist tries to run nlist on itself.
So it has to be in the current working directory.
Thanks Mark for your respond!
As you said "So it has to be in the current working directory.", what do you
mean? test-nlist needs to locate in the current working directory?
Yes. See the source code.
The test tries to run nlist on "./test-nlist".
Which package provides nlist, I didn't found nlist in my system.
Thanks,
Basically nlist fills in the n_value and n_scnum with the st_value and
st_shndx of the symbol named if found.
As you can see for me it corresponds to the values found by:
$ eu-readelf -s ./test-nlist | egrep ' (var|bss|main|foo)'
58: 0000000000004048 4 OBJECT GLOBAL DEFAULT 24 var
61: 0000000000004050 4 OBJECT GLOBAL DEFAULT 25 bss
66: 0000000000001310 3 FUNC GLOBAL DEFAULT 14 foo
71: 0000000000001080 408 FUNC GLOBAL DEFAULT 14 main
# which eu-readelf
/usr/bin/eu-readelf
# /usr/bin/eu-readelf -s tests/test-nlist
Symbol table [ 5] '.dynsym' contains 11 entries:
1 local symbol String table: [ 6] '.dynstr'
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UNDEF
1: 0000000000000000 0 NOTYPE WEAK DEFAULT UNDEF
_ITM_deregisterTMCloneTable
2: 0000000000000000 0 FUNC GLOBAL DEFAULT UNDEF
puts@GLIBC_2.2.5 (2)
3: 0000000000000000 0 FUNC GLOBAL DEFAULT UNDEF
__stack_chk_fail@GLIBC_2.4 (3)
4: 0000000000000000 0 FUNC GLOBAL DEFAULT UNDEF
__libc_start_main@GLIBC_2.2.5 (2)
5: 0000000000000000 0 NOTYPE WEAK DEFAULT UNDEF
__gmon_start__
6: 0000000000000000 0 FUNC GLOBAL DEFAULT UNDEF
nlist@ELFUTILS_1.0 (4)
7: 0000000000000000 0 FUNC GLOBAL DEFAULT UNDEF
__printf_chk@GLIBC_2.3.4 (5)
8: 0000000000000000 0 FUNC GLOBAL DEFAULT UNDEF
exit@GLIBC_2.2.5 (2)
9: 0000000000000000 0 NOTYPE WEAK DEFAULT UNDEF
_ITM_registerTMCloneTable
10: 0000000000000000 0 FUNC WEAK DEFAULT UNDEF
__cxa_finalize@GLIBC_2.2.5 (2)
For some reason your test-nlist doesn't have an .symtab.
Make sure that when you build the tests CLFAGS contains -g.
And the that test binary isn't accidentially stripped afterwards.
Cheers,
Mark
