2021-01-01 16:03:39 +08:00
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-- Copyright 2018-2021 Free Software Foundation, Inc.
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When debugging a mixed Ada/C program using this scenario:
- set print frame-arguements all
- an Ada function named pck.call_me calls a C function named break_me
- you put a breakpoint in break_me and the program reaches this
breakpoint.
Now display the backtrace:
(gdb) bt
#0 break_me () at [...]
#1 0x000000000040243e in pck.call_me (
s={P_ARRAY = 0x7fffffffe21c, P_BOUNDS = 0x41e6e8}) at [...]
whereas we should expect:
(gdb) bt
#0 break_me () at [...]
#1 0x000000000040243e in pck.call_me (s="test") at [...]
The problem is that GDB prints the S parameter in the pck.call_me Ada
function using the current language, so the C one, because the program
is stopped in a C function, whereas it should use the pck.call_me frame
one. This behavior is ok when user manually changes the language but it's
not the right one when language is auto.
This patch fixes this problem so now when using auto language, all Ada
frame arguments are printed using Ada like syntax when the frame is part
of Ada code, even if the program is stopped in a frame using a different
language.
If the user explicitly sets a language (using "set language ...") then
no change here, all the Ada frame arguments are printed using this
language.
gdb/ChangeLog:
* ada-valprint.c (ada_val_print_gnat_array): Remove language
parameter and use Ada language definition instead.
(ada_val_print_ptr): Remove unused language parameter.
(ada_val_print_num): Remove language parameter and use Ada language
definition instead.
(ada_val_print_enum, ada_val_print_flt): Remove unused language
parameter.
(ada_val_print_struct_union, ada_val_print_ref): Remove language
parameter and use Ada language definition instead.
(ada_val_print_1): Update all ada_val_print_xxx calls.
Remove language parameter.
(ada_val_print): Update ada_val_print_1 call.
gdb/testsuite/ChangeLog:
* gdb.ada/frame_arg_lang.exp: New testcase.
* gdb.ada/frame_arg_lang/bla.adb: New file.
* gdb.ada/frame_arg_lang/pck.ads: New file.
* gdb.ada/frame_arg_lang/pck.adb: New file.
* gdb.ada/frame_arg_lang/foo.c: New file.
Tested on x86_64-linux, no regressions.
2019-05-09 00:55:44 +08:00
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--
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-- This program is free software; you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation; either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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package body Pck is
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procedure C_Break_Me;
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pragma Import (C, C_Break_Me, "break_me");
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procedure Call_Me (S: in out String) is
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begin
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C_Break_Me;
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end Call_Me;
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end Pck;
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