Bug#895574: lintian: binary-compiled-with-profiling-enabled test fails on Ubuntu's armhf

[Chris Lamb <lamby@debian.org>]

[Replying to steve@eilval.com!]

Hey Sledge,

>>I suspect the underlying problem is that we are not detecting
>>profiling information on armhf correctly. The relevant code is:
>>
>>  https://salsa.debian.org/lintian/lintian/blob/master/checks/binaries.pm#L192-207
>>
>>I have attached the "readelf -WltdVs" output of "basic.c" compiled
>>on the harris.debian.org porterbox.
>>
>>Whilst I see a "GLIBC_" section, I do see an mcount:
>>
>>    117: 00000000     0 FUNC    GLOBAL DEFAULT  UND __gnu_mcount_nc@@GLIBC_2.8
>>
>>Can someone with some ELF knowledge chime in here? :)
>
>I can have a look. So we're looking at the same thing, what's in "basic.c"?

Ooh, thanks! So this is basic.c:

  #include <stdio.h>
  #include <string.h>
  
  int
  main(int argc, char *argv[])
  {
      char t[10];
      printf("Hello world!\n");
      /* forces a stack protector */
      (void) strcpy(t,argv[0]);
      return (int) t[0];
  }

Or, canonically:

  https://salsa.debian.org/lintian/lintian/blob/master/t/tests/binaries-general/debian/basic.c

Some of the C code might be to trigger other things, so I can't
vouch for it being a minimal testcase here alas.


Best wishes,

-- 
      ,''`.
     : :'  :     Chris Lamb
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