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From: "ibhagat at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/114186] New: Incorrect CTF generated for multidimensional
 array
Date: Fri, 01 Mar 2024 06:34:14 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: debug
X-Bugzilla-Version: 14.0
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X-Bugzilla-Who: ibhagat at gcc dot gnu.org
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114186

            Bug ID: 114186
           Summary: Incorrect CTF generated for multidimensional array
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ibhagat at gcc dot gnu.org
  Target Milestone: ---

$ cat array.c=20
int a[5][9][3];
$ gcc -O0 -gctf -dA -S array.c

Excerpt from array.s:

...=20=20=20=20=20=20=20=20
        .long   0x17    # ctv_name
        .long   0x5     # ctv_typeidx

=3D> a variable of type id =3D 5

        .long   0x1     # ctt_name
        .long   0x6000000       # ctt_info
        .long   0x4     # ctt_size or ctt_type
        .long   0x1000020       # ctf_encoding_data

=3D> type id =3D 1, type =3D int

        .long   0x5     # ctt_name
        .long   0x6000000       # ctt_info
        .long   0x8     # ctt_size or ctt_type
        .long   0x40    # ctf_encoding_data

=3D> type id =3D 2, type =3D long unsigned int

        .long   0       # ctt_name
        .long   0x12000000      # ctt_info
        .long   0       # ctt_size or ctt_type
        .long   0x1     # cta_contents
        .long   0x2     # cta_index
        .long   0x5     # cta_nelems

=3D> type id =3D 3, nelems =3D 5, array contents (cta_contents) of type wit=
h type id
=3D 1

        .long   0       # ctt_name
        .long   0x12000000      # ctt_info
        .long   0       # ctt_size or ctt_type
        .long   0x3     # cta_contents
        .long   0x2     # cta_index
        .long   0x9     # cta_nelems

=3D> type id =3D 4, nelems =3D 9, array contents (cta_contents) of type wit=
h type id
=3D 3=20

        .long   0       # ctt_name
        .long   0x12000000      # ctt_info
        .long   0       # ctt_size or ctt_type
        .long   0x4     # cta_contents
        .long   0x2     # cta_index
        .long   0x3     # cta_nelems

=3D> type id =3D 5, nelems =3D 3, array contents (cta_contents) of type wit=
h type id
=3D 4

In other words, the data type of the variable is being emitted as if it were
int a[3][9][5]=