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From: Tiezhu Yang <yangtiezhu@sourceware.org>
To: gdb-cvs@sourceware.org
Subject: [binutils-gdb] gdb: LoongArch: Add support for static data member in struct
X-Act-Checkin: binutils-gdb
X-Git-Author: Hui Li <lihui@loongson.cn>
X-Git-Refname: refs/heads/master
X-Git-Oldrev: 281309f3c8c692d0246f4437ad3c635fe69dbaf7
X-Git-Newrev: 78c7a5288e2ba8c9fd00ee948d1f20e4decb800c
Message-Id: <20230302143450.7C7B53858CDB@sourceware.org>
Date: Thu,  2 Mar 2023 14:34:50 +0000 (GMT)
List-Id: <gdb-cvs.sourceware.org>

https://sourceware.org/git/gitweb.cgi?p=3Dbinutils-gdb.git;h=3D78c7a5288e2b=
a8c9fd00ee948d1f20e4decb800c

commit 78c7a5288e2ba8c9fd00ee948d1f20e4decb800c
Author: Hui Li <lihui@loongson.cn>
Date:   Fri Feb 24 06:47:39 2023 +0800

    gdb: LoongArch: Add support for static data member in struct
   =20
    As described in C++ reference [1], static data members are not part
    of objects of a given class type. Modified compute_struct_member ()
    to ignore static data member so that we can get the expected result.
   =20
    loongson@linux:~$ cat test.c
    #include<stdio.h>
    struct struct_01 { static unsigned a; float b;};
    unsigned struct_01::a =3D 66;
    struct struct_01 struct_01_val =3D { 99.00 };
    int check_arg_struct(struct struct_01 arg)
      {
        printf("arg.a =3D %d\n", arg.a);
        printf("arg.b =3D %f\n", arg.b);
        return 0;
      }
    int main()
      {
        check_arg_struct(struct_01_val);
        return 0;
      }
    loongson@linux:~$ g++ -g test.c -o test++
    loongson@linux:~$ gdb test++
   =20
    Without this patch:
    ...
    (gdb) start
    ...
    (gdb) p check_arg_struct(struct_01_val)
    arg.a =3D 66
    arg.b =3D 0.000000
    $1 =3D 0
   =20
    With this patch:
    ...
    (gdb) start
    ...
    (gdb) p check_arg_struct(struct_01_val)
    arg.a =3D 66
    arg.b =3D 99.000000
    $1 =3D 0
   =20
    [1] https://learn.microsoft.com/en-us/cpp/cpp/static-members-cpp?view=
=3Dmsvc-170
   =20
    Signed-off-by: Hui Li <lihui@loongson.cn>
    Reviewed-By: Tom Tromey <tom@tromey.com>
    Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>

Diff:
---
 gdb/loongarch-tdep.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gdb/loongarch-tdep.c b/gdb/loongarch-tdep.c
index f5ddad0ba65..b380bd7e2d4 100644
--- a/gdb/loongarch-tdep.c
+++ b/gdb/loongarch-tdep.c
@@ -520,6 +520,10 @@ compute_struct_member (struct type *type,
 {
   for (int i =3D 0; i < type->num_fields (); i++)
     {
+      /* Ignore any static fields.  */
+      if (field_is_static (&type->field (i)))
+	continue;
+
       struct type *field_type =3D check_typedef (type->field (i).type ());
=20
       if (field_type->code () =3D=3D TYPE_CODE_INT