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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/115461] New: lsan doesn't work on s390x
Date: Wed, 12 Jun 2024 14:36:17 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115461

            Bug ID: 115461
           Summary: lsan doesn't work on s390x
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mpolacek at gcc dot gnu.org
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
  Target Milestone: ---

It appears that -fsanitize=3Dleak has no effect on s390x; it doesn't detect=
 even
the simplest leaks:

```
#include <stdlib.h>
#include <stdio.h>

int main() {
    void* ptr =3D malloc(123);
    printf("%x\n", ptr);
    return 0;
}
```

On x86_64, I get:

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D69068=3D=3DERROR: LeakSanitizer: detected memory leaks

Direct leak of 123 byte(s) in 1 object(s) allocated from:
    #0 0x7fd39ce13de5 in malloc (/lib64/liblsan.so.0+0x13de5) (BuildId:
bd0edcefa09c842881bff411016cb80201b5bdd9)
    #1 0x401147 in main (/home/mpolacek/x/trunk/gcc/a.out+0x401147) (BuildI=
d:
f29bbf6d55a2764be0623cb24526521a08243448)
    #2 0x7fd39cc46149 in __libc_start_call_main (/lib64/libc.so.6+0x28149)
(BuildId: 0d710e9d9dc10c500b8119c85da75004183618e2)
    #3 0x7fd39cc4620a in __libc_start_main_impl (/lib64/libc.so.6+0x2820a)
(BuildId: 0d710e9d9dc10c500b8119c85da75004183618e2)
    #4 0x401074 in _start (/home/mpolacek/x/trunk/gcc/a.out+0x401074) (Buil=
dId:
f29bbf6d55a2764be0623cb24526521a08243448)

SUMMARY: LeakSanitizer: 123 byte(s) leaked in 1 allocation(s).


Incidentally, we have *no* -fsanitize=3Dleak tests whatsoever.=