4dc06805c2
Hi,
I see the following fails on arm-none-eabi target,
-var-list-children --simple-values struct_declarations ^M
^done,numchild="11",children=[...,child={name="struct_declarations.func_ptr_struct",exp="func_ptr_struct",numchild="0",value="0x0 <_ftext>",type="struct _struct_decl (*)(int, char *, long)",thread-id="1"},child={name="struct_declarations.func_ptr_ptr",exp="func_ptr_ptr",numchild="0",value="0x0 <_ftext>",type="struct _struct_decl *(*)(int, char *, long)",thread-id="1"},...
(gdb) ^M
FAIL: gdb.mi/mi-var-child.exp: listing of children, simple types: names, type and values, complex types: names and types
-var-set-format weird.func_ptr_ptr natural^M
^done,format="natural",value="0x0 <_ftext>"^M
(gdb) ^M
FAIL: gdb.mi/mi-var-display.exp: set format variable weird.func_ptr_ptr in natural
In the test, "0x0" is expected, but "0x0 <_ftext>" is in the output.
Function pointers point to address zero, and tests assume there is no
symbol on address zero. However, on my arm-none-eabi target, there is
a code symbol _ftext on address zero, and test fails. Note that "set
print symbol off" doesn't take effect for function pointer.
int (*f) (void);
f = main;
(gdb) p f
$1 = (int (*)(void)) 0x8048400 <main>
(gdb) set print symbol off
(gdb) p f
$2 = (int (*)(void)) 0x8048400 <main>
In order to erase the difference, we can assign some function address
explicitly to function pointer, so the test behaves in a unique way.
In this patch, we assign nothing1 and nothing2 to function pointers
func_ptr_struct and func_ptr_ptr respectively, and update test as the
source file is changed.
gdb/testsuite:
2014-10-14 Yao Qi <yao@codesourcery.com>
* gdb.mi/mi-var-child.c (nothing1): New function.
(nothing2): New function.
(do_children_tests): Set function pointers by nothing1 and
nothing2.
* gdb.mi/mi-var-child.exp: Step over new added statements.
Update test to match the new output.
* gdb.mi/var-cmd.c (nothing1): New function.
(nothing2): New function.
(do_children_tests): Set function pointers by nothing1 and
nothing2.
* gdb.mi/mi-var-display.exp: Update test to match output.
Step to the line specified by $line_dct_nothing.
Increase the number of lines to step.
653 lines
13 KiB
C
653 lines
13 KiB
C
/* Copyright 1999-2014 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
struct _simple_struct {
|
|
int integer;
|
|
unsigned int unsigned_integer;
|
|
char character;
|
|
signed char signed_character;
|
|
char *char_ptr;
|
|
int array_of_10[10];
|
|
};
|
|
|
|
typedef struct _simple_struct simpleton;
|
|
|
|
simpleton global_simple;
|
|
|
|
enum foo {
|
|
bar = 1,
|
|
baz
|
|
};
|
|
|
|
typedef enum foo efoo;
|
|
|
|
union named_union
|
|
{
|
|
int integer;
|
|
char *char_ptr;
|
|
};
|
|
|
|
typedef struct _struct_decl {
|
|
int integer;
|
|
char character;
|
|
char *char_ptr;
|
|
long long_int;
|
|
int **int_ptr_ptr;
|
|
long long_array[10];
|
|
|
|
void (*func_ptr) (void);
|
|
struct _struct_decl (*func_ptr_struct) (int, char *, long);
|
|
struct _struct_decl *(*func_ptr_ptr) (int, char *, long);
|
|
union {
|
|
int a;
|
|
char *b;
|
|
long c;
|
|
enum foo d;
|
|
} u1;
|
|
|
|
struct {
|
|
union {
|
|
struct {
|
|
int d;
|
|
char e[10];
|
|
int *(*func) (void);
|
|
efoo foo;
|
|
} u1s1;
|
|
|
|
long f;
|
|
struct {
|
|
char array_ptr[2];
|
|
int (*func) (int, char *);
|
|
} u1s2;
|
|
} u2;
|
|
|
|
int g;
|
|
char h;
|
|
long i[10];
|
|
} s2;
|
|
} weird_struct;
|
|
|
|
struct _struct_n_pointer {
|
|
char ****char_ptr;
|
|
long ****long_ptr;
|
|
struct _struct_n_pointer *ptrs[3];
|
|
struct _struct_n_pointer *next;
|
|
};
|
|
|
|
struct anonymous {
|
|
int a;
|
|
struct {
|
|
int b;
|
|
char *c;
|
|
union {
|
|
int d;
|
|
void *e;
|
|
char f;
|
|
struct {
|
|
char g;
|
|
const char **h;
|
|
simpleton ***simple;
|
|
};
|
|
};
|
|
};
|
|
};
|
|
|
|
void do_locals_tests (void);
|
|
void do_block_tests (void);
|
|
void subroutine1 (int, long *);
|
|
void nothing (void);
|
|
void do_children_tests (void);
|
|
void do_special_tests (void);
|
|
void incr_a (char);
|
|
|
|
void incr_a (char a)
|
|
{
|
|
int b;
|
|
b = a;
|
|
}
|
|
|
|
int array[] = {1,2,3};
|
|
int array2[] = {4,5,6};
|
|
int *array_ptr = array;
|
|
|
|
void
|
|
do_locals_tests ()
|
|
{
|
|
int linteger = 0;
|
|
int *lpinteger = 0;
|
|
char lcharacter[2] = { 0, 0 };
|
|
char *lpcharacter = 0;
|
|
long llong = 0;
|
|
long *lplong = 0;
|
|
float lfloat = 0;
|
|
float *lpfloat = 0;
|
|
double ldouble = 0;
|
|
double *lpdouble = 0;
|
|
struct _simple_struct lsimple = { 0 };
|
|
struct _simple_struct *lpsimple = 0;
|
|
void (*func) (void) = 0;
|
|
|
|
/* Simple assignments */
|
|
linteger = 1234;
|
|
lpinteger = &linteger;
|
|
lcharacter[0] = 'a';
|
|
lpcharacter = lcharacter;
|
|
llong = 2121L;
|
|
lplong = &llong;
|
|
lfloat = 2.1;
|
|
lpfloat = &lfloat;
|
|
ldouble = 2.718281828459045;
|
|
lpdouble = &ldouble;
|
|
lsimple.integer = 1234;
|
|
lsimple.unsigned_integer = 255;
|
|
lsimple.character = 'a';
|
|
lsimple.signed_character = 21;
|
|
lsimple.char_ptr = lcharacter;
|
|
lpsimple = &lsimple;
|
|
func = nothing;
|
|
|
|
/* Check pointers */
|
|
linteger = 4321;
|
|
lcharacter[0] = 'b';
|
|
llong = 1212L;
|
|
lfloat = 1.2;
|
|
ldouble = 5.498548281828172;
|
|
lsimple.integer = 255;
|
|
lsimple.unsigned_integer = 4321;
|
|
lsimple.character = 'b';
|
|
lsimple.signed_character = 0;
|
|
|
|
subroutine1 (linteger, &llong);
|
|
}
|
|
|
|
void
|
|
nothing ()
|
|
{
|
|
}
|
|
|
|
struct _struct_decl
|
|
nothing1 (int a, char *b, long c)
|
|
{
|
|
struct _struct_decl foo;
|
|
|
|
return foo;
|
|
}
|
|
|
|
struct _struct_decl *
|
|
nothing2 (int a, char *b, long c)
|
|
{
|
|
return (struct _struct_decl *) 0;
|
|
}
|
|
|
|
void
|
|
subroutine1 (int i, long *l)
|
|
{
|
|
global_simple.integer = i + 3;
|
|
i = 212;
|
|
*l = 12;
|
|
}
|
|
|
|
void
|
|
do_block_tests ()
|
|
{
|
|
int cb = 12;
|
|
|
|
{
|
|
int foo;
|
|
foo = 123;
|
|
{
|
|
int foo2;
|
|
foo2 = 123;
|
|
{
|
|
int foo;
|
|
foo = 321;
|
|
}
|
|
foo2 = 0;
|
|
}
|
|
foo = 0;
|
|
}
|
|
|
|
cb = 21;
|
|
}
|
|
|
|
void
|
|
do_children_tests (void)
|
|
{
|
|
weird_struct *weird;
|
|
struct _struct_n_pointer *psnp;
|
|
struct _struct_n_pointer snp0, snp1, snp2;
|
|
char a0[2] = {}, *a1, **a2, ***a3;
|
|
char b0[2] = {}, *b1, **b2, ***b3;
|
|
char c0[2] = {}, *c1, **c2, ***c3;
|
|
long z0, *z1, **z2, ***z3;
|
|
long y0, *y1, **y2, ***y3;
|
|
long x0, *x1, **x2, ***x3;
|
|
int *foo;
|
|
int bar;
|
|
|
|
/* Avoid pointing into NULL, as that is editable on some
|
|
systems. */
|
|
int dummy;
|
|
int *dummy_ptr = &dummy;
|
|
|
|
struct _struct_decl struct_declarations = { 0, 0, NULL, 0, &dummy_ptr };
|
|
weird = &struct_declarations;
|
|
|
|
struct_declarations.integer = 123;
|
|
weird->char_ptr = "hello";
|
|
bar = 2121;
|
|
foo = &bar;
|
|
struct_declarations.int_ptr_ptr = &foo;
|
|
weird->long_array[0] = 1234;
|
|
struct_declarations.long_array[1] = 2345;
|
|
weird->long_array[2] = 3456;
|
|
struct_declarations.long_array[3] = 4567;
|
|
weird->long_array[4] = 5678;
|
|
struct_declarations.long_array[5] = 6789;
|
|
weird->long_array[6] = 7890;
|
|
struct_declarations.long_array[7] = 8901;
|
|
weird->long_array[8] = 9012;
|
|
struct_declarations.long_array[9] = 1234;
|
|
|
|
weird->func_ptr = nothing;
|
|
weird->func_ptr_struct = nothing1;
|
|
weird->func_ptr_ptr = nothing2;
|
|
|
|
/* Struct/pointer/array tests */
|
|
a0[0] = '0';
|
|
a1 = a0;
|
|
a2 = &a1;
|
|
a3 = &a2;
|
|
b0[0] = '1';
|
|
b1 = b0;
|
|
b2 = &b1;
|
|
b3 = &b2;
|
|
c0[0] = '2';
|
|
c1 = c0;
|
|
c2 = &c1;
|
|
c3 = &c2;
|
|
z0 = 0xdead + 0;
|
|
z1 = &z0;
|
|
z2 = &z1;
|
|
z3 = &z2;
|
|
y0 = 0xdead + 1;
|
|
y1 = &y0;
|
|
y2 = &y1;
|
|
y3 = &y2;
|
|
x0 = 0xdead + 2;
|
|
x1 = &x0;
|
|
x2 = &x1;
|
|
x3 = &x2;
|
|
snp0.char_ptr = &a3;
|
|
snp0.long_ptr = &z3;
|
|
snp0.ptrs[0] = &snp0;
|
|
snp0.ptrs[1] = &snp1;
|
|
snp0.ptrs[2] = &snp2;
|
|
snp0.next = &snp1;
|
|
snp1.char_ptr = &b3;
|
|
snp1.long_ptr = &y3;
|
|
snp1.ptrs[0] = &snp0;
|
|
snp1.ptrs[1] = &snp1;
|
|
snp1.ptrs[2] = &snp2;
|
|
snp1.next = &snp2;
|
|
snp2.char_ptr = &c3;
|
|
snp2.long_ptr = &x3;
|
|
snp2.ptrs[0] = &snp0;
|
|
snp2.ptrs[1] = &snp1;
|
|
snp2.ptrs[2] = &snp2;
|
|
snp2.next = 0x0;
|
|
psnp = &snp0;
|
|
snp0.char_ptr = &b3;
|
|
snp1.char_ptr = &c3;
|
|
snp2.char_ptr = &a3;
|
|
snp0.long_ptr = &y3;
|
|
snp1.long_ptr = &x3;
|
|
snp2.long_ptr = &z3;
|
|
{int a = 0;}
|
|
}
|
|
|
|
void
|
|
do_special_tests (void)
|
|
{
|
|
union named_union u;
|
|
union {
|
|
int a;
|
|
char b;
|
|
long c;
|
|
} anonu;
|
|
struct _simple_struct s;
|
|
struct {
|
|
int a;
|
|
char b;
|
|
long c;
|
|
} anons;
|
|
enum foo e;
|
|
enum { A, B, C } anone;
|
|
int array[21];
|
|
int a;
|
|
|
|
a = 1;
|
|
u.integer = a;
|
|
anonu.a = a;
|
|
s.integer = a;
|
|
anons.a = a;
|
|
e = bar;
|
|
anone = A;
|
|
incr_a(2);
|
|
}
|
|
|
|
void do_frozen_tests ()
|
|
{
|
|
/*: BEGIN: frozen :*/
|
|
struct {
|
|
int i;
|
|
struct {
|
|
int j;
|
|
int k;
|
|
} nested;
|
|
} v1 = {1, {2, 3}};
|
|
|
|
int v2 = 4;
|
|
/*:
|
|
mi_create_varobj V1 v1 "create varobj for v1"
|
|
mi_create_varobj V2 v2 "create varobj for v2"
|
|
|
|
mi_list_varobj_children "V1" {
|
|
{"V1.i" "i" "0" "int"}
|
|
{"V1.nested" "nested" "2" "struct {...}"}
|
|
} "list children of v1"
|
|
|
|
mi_list_varobj_children "V1.nested" {
|
|
{"V1.nested.j" "j" "0" "int"}
|
|
{"V1.nested.k" "k" "0" "int"}
|
|
} "list children of v1.nested"
|
|
|
|
mi_check_varobj_value V1.i 1 "check V1.i: 1"
|
|
mi_check_varobj_value V1.nested.j 2 "check V1.nested.j: 2"
|
|
mi_check_varobj_value V1.nested.k 3 "check V1.nested.k: 3"
|
|
mi_check_varobj_value V2 4 "check V2: 4"
|
|
:*/
|
|
v2 = 5;
|
|
/*:
|
|
mi_varobj_update * {V2} "update varobjs: V2 changed"
|
|
set_frozen V2 1
|
|
:*/
|
|
v2 = 6;
|
|
/*:
|
|
mi_varobj_update * {} "update varobjs: nothing changed"
|
|
mi_check_varobj_value V2 5 "check V2: 5"
|
|
mi_varobj_update V2 {V2} "update V2 explicitly"
|
|
mi_check_varobj_value V2 6 "check V2: 6"
|
|
:*/
|
|
v1.i = 7;
|
|
v1.nested.j = 8;
|
|
v1.nested.k = 9;
|
|
/*:
|
|
set_frozen V1 1
|
|
mi_varobj_update * {} "update varobjs: nothing changed"
|
|
mi_check_varobj_value V1.i 1 "check V1.i: 1"
|
|
mi_check_varobj_value V1.nested.j 2 "check V1.nested.j: 2"
|
|
mi_check_varobj_value V1.nested.k 3 "check V1.nested.k: 3"
|
|
# Check that explicit update for elements of structures
|
|
# works.
|
|
# Update v1.j
|
|
mi_varobj_update V1.nested.j {V1.nested.j} "update V1.nested.j"
|
|
mi_check_varobj_value V1.i 1 "check V1.i: 1"
|
|
mi_check_varobj_value V1.nested.j 8 "check V1.nested.j: 8"
|
|
mi_check_varobj_value V1.nested.k 3 "check V1.nested.k: 3"
|
|
# Update v1.nested, check that children is updated.
|
|
mi_varobj_update V1.nested {V1.nested.k} "update V1.nested"
|
|
mi_check_varobj_value V1.i 1 "check V1.i: 1"
|
|
mi_check_varobj_value V1.nested.j 8 "check V1.nested.j: 8"
|
|
mi_check_varobj_value V1.nested.k 9 "check V1.nested.k: 9"
|
|
# Update v1.i
|
|
mi_varobj_update V1.i {V1.i} "update V1.i"
|
|
mi_check_varobj_value V1.i 7 "check V1.i: 7"
|
|
:*/
|
|
v1.i = 10;
|
|
v1.nested.j = 11;
|
|
v1.nested.k = 12;
|
|
/*:
|
|
# Check that unfreeze itself does not updates the values.
|
|
set_frozen V1 0
|
|
mi_check_varobj_value V1.i 7 "check V1.i: 7"
|
|
mi_check_varobj_value V1.nested.j 8 "check V1.nested.j: 8"
|
|
mi_check_varobj_value V1.nested.k 9 "check V1.nested.k: 9"
|
|
mi_varobj_update V1 {V1.i V1.nested.j V1.nested.k} "update V1"
|
|
mi_check_varobj_value V1.i 10 "check V1.i: 10"
|
|
mi_check_varobj_value V1.nested.j 11 "check V1.nested.j: 11"
|
|
mi_check_varobj_value V1.nested.k 12 "check V1.nested.k: 12"
|
|
:*/
|
|
|
|
/*: END: frozen :*/
|
|
}
|
|
|
|
void do_at_tests_callee ()
|
|
{
|
|
/* This is a test of wrong DWARF data being assigned to expression.
|
|
The DWARF location expression is bound to symbol when expression
|
|
is parsed. So, if we create floating varobj in one function,
|
|
and then try to reevaluate it in other frame without reparsing
|
|
the expression, we will access local variables using DWARF
|
|
location expression from the original frame, and are likely
|
|
to grab wrong symbol. To reliably reproduce this bug, we need
|
|
to wrap our variable with a bunch of buffers, so that those
|
|
buffers are accessed instead of the real one. */
|
|
int buffer1 = 10;
|
|
int buffer2 = 11;
|
|
int buffer3 = 12;
|
|
int i = 7;
|
|
int buffer4 = 13;
|
|
int buffer5 = 14;
|
|
int buffer6 = 15;
|
|
i++; /* breakpoint inside callee */
|
|
i++;
|
|
}
|
|
|
|
void do_at_tests ()
|
|
{
|
|
int x;
|
|
/*: BEGIN: floating :*/
|
|
int i = 10;
|
|
int y = 15;
|
|
/*:
|
|
mi_create_floating_varobj F i "create floating varobj"
|
|
:*/
|
|
i++;
|
|
/*:
|
|
mi_varobj_update F {F} "update F (1)"
|
|
mi_check_varobj_value F 11 "check F (1)"
|
|
:*/
|
|
i++;
|
|
{
|
|
double i = 15;
|
|
/*:
|
|
mi_varobj_update_with_type_change F "double" "0" "update F (2)"
|
|
mi_check_varobj_value F 15 "check F (2)"
|
|
:*/
|
|
i += 2.0;
|
|
}
|
|
{
|
|
float i = 19;
|
|
/*:
|
|
mi_gdb_test "-var-update --all-values F" {.*value="19".*} "update F (--all-values)"
|
|
:*/
|
|
i += 2.0;
|
|
}
|
|
i++;
|
|
/*:
|
|
mi_varobj_update_with_type_change F "int" "0" "update F (3)"
|
|
mi_check_varobj_value F 13 "check F (3)"
|
|
:*/
|
|
i++;
|
|
do_at_tests_callee ();
|
|
i++;
|
|
/*: END: floating :*/
|
|
}
|
|
|
|
/* Some header appear to define uint already, so apply some
|
|
uglification. Note that without uglification, the compile
|
|
does not fail, rather, we don't test what we want because
|
|
something else calls check_typedef on 'uint' already. */
|
|
typedef unsigned int uint_for_mi_testing;
|
|
|
|
struct Data {
|
|
int alloc;
|
|
uint_for_mi_testing sharable : 4;
|
|
};
|
|
|
|
/* Accessing a value of a bitfield whose type is a typed used to
|
|
result in division by zero. See:
|
|
|
|
http://sourceware.org/bugzilla/show_bug.cgi?id=10884
|
|
|
|
This tests for this bug. */
|
|
|
|
void do_bitfield_tests ()
|
|
{
|
|
/*: BEGIN: bitfield :*/
|
|
struct Data d = {0, 3};
|
|
/*:
|
|
mi_create_varobj V d "create varobj for Data"
|
|
mi_list_varobj_children "V" {
|
|
{"V.alloc" "alloc" "0" "int"}
|
|
{"V.sharable" "sharable" "0" "uint_for_mi_testing"}
|
|
} "list children of Data"
|
|
mi_check_varobj_value V.sharable 3 "access bitfield"
|
|
:*/
|
|
return;
|
|
/*: END: bitfield :*/
|
|
}
|
|
|
|
void
|
|
do_anonymous_type_tests (void)
|
|
{
|
|
struct anonymous *anon;
|
|
struct anonymous **ptr;
|
|
struct
|
|
{
|
|
int x;
|
|
struct
|
|
{
|
|
int a;
|
|
};
|
|
struct
|
|
{
|
|
int b;
|
|
};
|
|
} v = {1, {2}, {3}};
|
|
|
|
anon = malloc (sizeof (struct anonymous));
|
|
anon->a = 1;
|
|
anon->b = 2;
|
|
anon->c = (char *) 3;
|
|
anon->d = 4;
|
|
anon->g = '5';
|
|
anon->h = (const char **) 6;
|
|
anon->simple = (simpleton ***) 7;
|
|
|
|
ptr = &anon;
|
|
free (anon);
|
|
return; /* anonymous type tests breakpoint */
|
|
}
|
|
|
|
void
|
|
do_nested_struct_union_tests (void)
|
|
{
|
|
struct s_a
|
|
{
|
|
int a;
|
|
};
|
|
struct s_b
|
|
{
|
|
int b;
|
|
};
|
|
union u_ab
|
|
{
|
|
struct s_a a;
|
|
struct s_b b;
|
|
};
|
|
struct ss
|
|
{
|
|
struct s_a a1;
|
|
struct s_b b1;
|
|
union u_ab u1;
|
|
|
|
/* Anonymous union. */
|
|
union
|
|
{
|
|
struct s_a a2;
|
|
struct s_b b2;
|
|
};
|
|
|
|
union
|
|
{
|
|
struct s_a a3;
|
|
struct s_b b3;
|
|
} u2;
|
|
};
|
|
|
|
typedef struct
|
|
{
|
|
int a;
|
|
} td_s_a;
|
|
|
|
typedef struct
|
|
{
|
|
int b;
|
|
} td_s_b;
|
|
|
|
typedef union
|
|
{
|
|
td_s_a a;
|
|
td_s_b b;
|
|
} td_u_ab;
|
|
|
|
struct ss var;
|
|
struct
|
|
{
|
|
td_u_ab ab;
|
|
} var2;
|
|
|
|
struct ss *ss_ptr;
|
|
|
|
memset (&var, 0, sizeof (var));
|
|
memset (&var2, 0, sizeof (var2));
|
|
ss_ptr = &var;
|
|
|
|
return; /* nested struct union tests breakpoint */
|
|
}
|
|
|
|
int
|
|
main (int argc, char *argv [])
|
|
{
|
|
do_locals_tests ();
|
|
do_block_tests ();
|
|
do_children_tests ();
|
|
do_special_tests ();
|
|
do_frozen_tests ();
|
|
do_at_tests ();
|
|
do_bitfield_tests ();
|
|
do_anonymous_type_tests ();
|
|
do_nested_struct_union_tests ();
|
|
exit (0);
|
|
}
|
|
|
|
|