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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/29196] [gdb, gcc-12/m32/pie] FAIL: gdb.base/gdb11531.exp:
 watchpoint variable triggers at next
Date: Sat, 28 May 2022 08:08:47 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29196

--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
Using:
...
$ gdb -q -batch outputs/gdb.base/gdb11531/gdb11531 -ex start -ex "maint info
line-tab"
...
we get the info how gdb parses the line tab.

And for -m32 we have:
...
INDEX  LINE   ADDRESS            IS-STMT PROLOGUE-END=20
0      33     0x0804915d         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
1      34     0x0804915d         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
2      35     0x08049167         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
3      36     0x08049173         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
4      37     0x0804917d         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
5      38     0x08049187         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
6      39     0x0804918c         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
7      END    0x0804918d         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
...
and for -m32 -pie:
...
INDEX  LINE   ADDRESS            IS-STMT PROLOGUE-END=20
0      33     0x5655617d         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
1      34     0x56556187         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
2      35     0x56556191         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
3      36     0x5655619d         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
4      37     0x565561a7         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
5      38     0x565561b1         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
6      39     0x565561b7         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
7      END    0x565561b8         Y=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
...

So I guess from gdb point of view the difference is that for -m32, line 33 =
and
34 fall at the same insn, and for -m32 -pie not.

--=20
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