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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/108834] New: LTO: ltrans temporary file is used as
 module name in ASAN
Date: Fri, 17 Feb 2023 11:23:59 +0000
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X-Bugzilla-Component: sanitizer
X-Bugzilla-Version: 13.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108834

            Bug ID: 108834
           Summary: LTO: ltrans temporary file is used as module name in
                    ASAN
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin 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, marxi=
n at gcc dot gnu.org
  Target Milestone: ---

We originally noticed that accidentally in openSUSE bugzilla:
https://bugzilla.opensuse.org/show_bug.cgi?id=3D1208386

$ cat jhead.i
int foo;

$ gcc -flto -fsanitize=3Daddress jhead.i -shared -fPIC -o jhead && md5sum j=
head
4e0fb88f928272b4962c6dcd8b845d71  jhead
$ gcc -flto -fsanitize=3Daddress jhead.i -shared -fPIC -o jhead && md5sum j=
head
e3c77e7ce9d54afb812add5b87a254d1  jhead

$ strings jhead | grep ltrans
/tmp/ccIzP3oh.ltrans0.o

it comes from ASAN module name:

...
.LC2:
        .string "./jhead.ltrans0.o"
        .section        .data.rel,"aw"
        .align 32
        .type   .LASAN0.2, @object
        .size   .LASAN0.2, 64
.LASAN0.2:
        .quad   .LASAN1.0
        .quad   4
        .quad   64
        .quad   .LC1
        .quad   .LC2

which is main_input_filename:
gcc/asan.cc:3290

Anyway, I can fix it.=