Fixed void* vs int* overload issue (PR C++/10343).
2010-10-14 Sami Wagiaalla <swagiaal@redhat.com> * gdbtypes.h: Create BASE_PTR_CONVERSION_BADNESS. * gdbtypes.c (rank_one_type): Move type comparison code out of here to... (types_equal): ...here. And changed it as follows: Outside of typedefs type must be of the same TYPE_CODE. When compairing two pointers or references they are equal if their targets are equal. Correct pointer conversions. 2010-10-14 Sami Wagiaalla <swagiaal@redhat.com> * gdb.cp/converts.cc: New test program. * gdb.cp/converts.exp: New test. * gdb.cp/overload.exp: Added test for void* vs int*. * gdb.cp/overload.exp: Ditto. * gdb.cp/oranking.exp: Removed related kfail.
This commit is contained in:
Sami Wagiaalla
parent
5c3da5ea2e
commit
7062b0a0df
|
|
@ -1,3 +1,14 @@
|
|||
2010-10-14 Sami Wagiaalla <swagiaal@redhat.com>
|
||||
|
||||
* gdbtypes.h: Create BASE_PTR_CONVERSION_BADNESS.
|
||||
* gdbtypes.c (rank_one_type): Move type comparison code out of here
|
||||
to...
|
||||
(types_equal): ...here. And changed it as follows:
|
||||
Outside of typedefs type must be of the same TYPE_CODE.
|
||||
When compairing two pointers or references they are equal if their
|
||||
targets are equal.
|
||||
Correct pointer conversions.
|
||||
|
||||
2010-10-14 Pierre Muller <muller@ics.u-strasbg.fr>
|
||||
|
||||
* p-lang.c (is_pascal_string_type): Avoid crashes on structures
|
||||
|
|
|
|||
|
|
@ -2102,6 +2102,56 @@ integer_types_same_name_p (const char *first, const char *second)
|
|||
return 1;
|
||||
}
|
||||
|
||||
/* Compares type A to type B returns 1 if the represent the same type
|
||||
0 otherwise. */
|
||||
|
||||
static int
|
||||
types_equal (struct type *a, struct type *b)
|
||||
{
|
||||
/* Identical type pointers. */
|
||||
/* However, this still doesn't catch all cases of same type for b
|
||||
and a. The reason is that builtin types are different from
|
||||
the same ones constructed from the object. */
|
||||
if (a == b)
|
||||
return 1;
|
||||
|
||||
/* Resolve typedefs */
|
||||
if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF)
|
||||
a = check_typedef (a);
|
||||
if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF)
|
||||
b = check_typedef (b);
|
||||
|
||||
/* If after resolving typedefs a and b are not of the same type
|
||||
code then they are not equal. */
|
||||
if (TYPE_CODE (a) != TYPE_CODE (b))
|
||||
return 0;
|
||||
|
||||
/* If a and b are both pointers types or both reference types then
|
||||
they are equal of the same type iff the objects they refer to are
|
||||
of the same type. */
|
||||
if (TYPE_CODE (a) == TYPE_CODE_PTR
|
||||
|| TYPE_CODE (a) == TYPE_CODE_REF)
|
||||
return types_equal (TYPE_TARGET_TYPE (a),
|
||||
TYPE_TARGET_TYPE (b));
|
||||
|
||||
/*
|
||||
Well, damnit, if the names are exactly the same, I'll say they
|
||||
are exactly the same. This happens when we generate method
|
||||
stubs. The types won't point to the same address, but they
|
||||
really are the same.
|
||||
*/
|
||||
|
||||
if (TYPE_NAME (a) && TYPE_NAME (b)
|
||||
&& strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0)
|
||||
return 1;
|
||||
|
||||
/* Check if identical after resolving typedefs. */
|
||||
if (a == b)
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Compare one type (PARM) for compatibility with another (ARG).
|
||||
* PARM is intended to be the parameter type of a function; and
|
||||
* ARG is the supplied argument's type. This function tests if
|
||||
|
|
@ -2115,11 +2165,8 @@ integer_types_same_name_p (const char *first, const char *second)
|
|||
int
|
||||
rank_one_type (struct type *parm, struct type *arg)
|
||||
{
|
||||
/* Identical type pointers. */
|
||||
/* However, this still doesn't catch all cases of same type for arg
|
||||
and param. The reason is that builtin types are different from
|
||||
the same ones constructed from the object. */
|
||||
if (parm == arg)
|
||||
|
||||
if (types_equal (parm, arg))
|
||||
return 0;
|
||||
|
||||
/* Resolve typedefs */
|
||||
|
|
@ -2128,21 +2175,6 @@ rank_one_type (struct type *parm, struct type *arg)
|
|||
if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF)
|
||||
arg = check_typedef (arg);
|
||||
|
||||
/*
|
||||
Well, damnit, if the names are exactly the same, I'll say they
|
||||
are exactly the same. This happens when we generate method
|
||||
stubs. The types won't point to the same address, but they
|
||||
really are the same.
|
||||
*/
|
||||
|
||||
if (TYPE_NAME (parm) && TYPE_NAME (arg)
|
||||
&& !strcmp (TYPE_NAME (parm), TYPE_NAME (arg)))
|
||||
return 0;
|
||||
|
||||
/* Check if identical after resolving typedefs. */
|
||||
if (parm == arg)
|
||||
return 0;
|
||||
|
||||
/* See through references, since we can almost make non-references
|
||||
references. */
|
||||
if (TYPE_CODE (arg) == TYPE_CODE_REF)
|
||||
|
|
@ -2166,15 +2198,23 @@ rank_one_type (struct type *parm, struct type *arg)
|
|||
switch (TYPE_CODE (arg))
|
||||
{
|
||||
case TYPE_CODE_PTR:
|
||||
if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID
|
||||
&& TYPE_CODE (TYPE_TARGET_TYPE (arg)) != TYPE_CODE_VOID)
|
||||
|
||||
/* Allowed pointer conversions are:
|
||||
(a) pointer to void-pointer conversion. */
|
||||
if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID)
|
||||
return VOID_PTR_CONVERSION_BADNESS;
|
||||
else
|
||||
return rank_one_type (TYPE_TARGET_TYPE (parm),
|
||||
TYPE_TARGET_TYPE (arg));
|
||||
|
||||
/* (b) pointer to ancestor-pointer conversion. */
|
||||
if (is_ancestor (TYPE_TARGET_TYPE (parm),
|
||||
TYPE_TARGET_TYPE (arg)))
|
||||
return BASE_PTR_CONVERSION_BADNESS;
|
||||
|
||||
return INCOMPATIBLE_TYPE_BADNESS;
|
||||
case TYPE_CODE_ARRAY:
|
||||
return rank_one_type (TYPE_TARGET_TYPE (parm),
|
||||
TYPE_TARGET_TYPE (arg));
|
||||
if (types_equal (TYPE_TARGET_TYPE (parm),
|
||||
TYPE_TARGET_TYPE (arg)))
|
||||
return 0;
|
||||
return INCOMPATIBLE_TYPE_BADNESS;
|
||||
case TYPE_CODE_FUNC:
|
||||
return rank_one_type (TYPE_TARGET_TYPE (parm), arg);
|
||||
case TYPE_CODE_INT:
|
||||
|
|
|
|||
|
|
@ -1399,6 +1399,9 @@ extern int is_unique_ancestor (struct type *, struct value *);
|
|||
#define INTEGER_PROMOTION_BADNESS 1
|
||||
/* Badness of floating promotion */
|
||||
#define FLOAT_PROMOTION_BADNESS 1
|
||||
/* Badness of converting a derived class pointer
|
||||
to a base class pointer. */
|
||||
#define BASE_PTR_CONVERSION_BADNESS 1
|
||||
/* Badness of integral conversion */
|
||||
#define INTEGER_CONVERSION_BADNESS 2
|
||||
/* Badness of floating conversion */
|
||||
|
|
|
|||
|
|
@ -1,3 +1,11 @@
|
|||
2010-10-14 Sami Wagiaalla <swagiaal@redhat.com>
|
||||
|
||||
* gdb.cp/converts.cc: New test program.
|
||||
* gdb.cp/converts.exp: New test.
|
||||
* gdb.cp/overload.exp: Added test for void* vs int*.
|
||||
* gdb.cp/overload.exp: Ditto.
|
||||
* gdb.cp/oranking.exp: Removed related kfail.
|
||||
|
||||
2010-10-13 Doug Evans <dje@google.com>
|
||||
|
||||
* lib/gdb-python.exp (gdb_check_python_config): New function.
|
||||
|
|
|
|||
|
|
@ -0,0 +1,53 @@
|
|||
class A {};
|
||||
class B : public A {};
|
||||
|
||||
typedef A TA1;
|
||||
typedef A TA2;
|
||||
typedef TA2 TA3;
|
||||
|
||||
int foo0_1 (TA1) { return 1; }
|
||||
int foo0_2 (TA3) { return 2; }
|
||||
int foo0_3 (A***) { return 3; }
|
||||
|
||||
int foo1_1 (char *) {return 11;}
|
||||
int foo1_2 (char[]) {return 12;}
|
||||
int foo1_3 (int*) {return 13;}
|
||||
int foo1_4 (A*) {return 14;}
|
||||
int foo1_5 (void*) {return 15;}
|
||||
int foo1_6 (void**) {return 15;}
|
||||
|
||||
int foo2_1 (char** ) {return 21;}
|
||||
int foo2_2 (char[][1]) {return 22;}
|
||||
int foo2_3 (char *[]) {return 23;}
|
||||
int foo2_4 (int *[]) {return 24;}
|
||||
|
||||
int main()
|
||||
{
|
||||
|
||||
TA2 ta; // typedef to..
|
||||
foo0_1 (ta); // ..another typedef
|
||||
foo0_2 (ta); // ..typedef of a typedef
|
||||
|
||||
B*** bppp; // Pointer-to-pointer-to-pointer-to-derived..
|
||||
//foo0_3(bppp); // Pointer-to-pointer-to-pointer base.
|
||||
foo0_3((A***)bppp); // to ensure that the function is emitted.
|
||||
|
||||
char *a; // pointer to..
|
||||
B *bp;
|
||||
foo1_1 (a); // ..pointer
|
||||
foo1_2 (a); // ..array
|
||||
foo1_3 ((int*)a); // ..pointer of wrong type
|
||||
foo1_3 ((int*)bp); // ..pointer of wrong type
|
||||
foo1_4 (bp); // ..ancestor pointer
|
||||
foo1_5 (bp); // ..void pointer
|
||||
foo1_6 ((void**)bp); // ..void pointer
|
||||
|
||||
char **b; // pointer pointer to..
|
||||
char ba[1][1];
|
||||
foo1_5 (b); // ..void pointer
|
||||
foo2_1 (b); // ..pointer pointer
|
||||
foo2_2 (ba); // ..array of arrays
|
||||
foo2_3 (b); // ..array of pointers
|
||||
foo2_4 ((int**)b); // ..array of wrong pointers
|
||||
return 0; // end of main
|
||||
}
|
||||
|
|
@ -0,0 +1,48 @@
|
|||
# Copyright 2008 Free Software Foundation, Inc.
|
||||
|
||||
# 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/>.
|
||||
|
||||
set testfile converts
|
||||
set srcfile ${testfile}.cc
|
||||
if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} {debug c++}] } {
|
||||
return -1
|
||||
}
|
||||
|
||||
############################################
|
||||
|
||||
if ![runto_main] then {
|
||||
perror "couldn't run to breakpoint main"
|
||||
continue
|
||||
}
|
||||
|
||||
gdb_breakpoint [gdb_get_line_number "end of main"]
|
||||
gdb_continue_to_breakpoint "end of main"
|
||||
|
||||
gdb_test "p foo0_1 (ta)" "= 1" "typedef to another typedef"
|
||||
gdb_test "p foo0_2 (ta)" "= 2" "typedef to typedef of a typedef"
|
||||
gdb_test "p foo0_3 (bppp)" "Cannot resolve.*" \
|
||||
"Pointer-to-pointer-to-pointer derived to Pointer-to-pointer-to-pointer base."
|
||||
|
||||
gdb_test "p foo1_1 (a)" "= 11" "pointer to pointer"
|
||||
gdb_test "p foo1_2 (a)" "= 12" "pointer to array"
|
||||
gdb_test "p foo1_3 (a)" "Cannot resolve.*" "pointer to pointer of wrong type"
|
||||
gdb_test "p foo1_3 (bp)" "Cannot resolve.*" "pointer to pointer of wrong type"
|
||||
gdb_test "p foo1_4 (bp)" "= 14" "pointer to ancestor pointer"
|
||||
gdb_test "p foo1_5 (bp)" "= 15" "pointer to void pointer"
|
||||
|
||||
gdb_test "p foo1_5 (b)" "= 15" "pointer pointer to void pointer"
|
||||
gdb_test "p foo2_1 (b)" "= 21" "pointer pointer to pointer pointer"
|
||||
gdb_test "p foo2_2 (b)" "Cannot resolve.*" "pointer pointer to array of arrays"
|
||||
gdb_test "p foo2_3 (b)" "= 23" "pointer pointer to array of pointers"
|
||||
gdb_test "p foo2_4 (b)" "Cannot resolve.*" "pointer pointer to array of wrong pointers"
|
||||
|
|
@ -56,7 +56,6 @@ setup_kfail "gdb/12098" *-*-*
|
|||
gdb_test "p foo5(c)" "26"
|
||||
|
||||
gdb_test "p test6()" "28"
|
||||
setup_kfail "gdb/10343" *-*-*
|
||||
gdb_test "p foo6(bp)" "28"
|
||||
|
||||
gdb_test "p test7()" "210"
|
||||
|
|
|
|||
|
|
@ -24,6 +24,9 @@ int overload1arg (unsigned long);
|
|||
int overload1arg (float);
|
||||
int overload1arg (double);
|
||||
|
||||
int overload1arg (int*);
|
||||
int overload1arg (void*);
|
||||
|
||||
int overloadfnarg (void);
|
||||
int overloadfnarg (int);
|
||||
int overloadfnarg (int, int (*) (int));
|
||||
|
|
@ -99,6 +102,8 @@ int main ()
|
|||
unsigned long arg10 =10;
|
||||
float arg11 =100.0;
|
||||
double arg12 = 200.0;
|
||||
int arg13 = 200.0;
|
||||
char arg14 = 'a';
|
||||
|
||||
char *str = (char *) "A";
|
||||
foo foo_instance1(111);
|
||||
|
|
@ -150,6 +155,8 @@ int foo::overload1arg (long arg) { arg = 0; return 9;}
|
|||
int foo::overload1arg (unsigned long arg) { arg = 0; return 10;}
|
||||
int foo::overload1arg (float arg) { arg = 0; return 11;}
|
||||
int foo::overload1arg (double arg) { arg = 0; return 12;}
|
||||
int foo::overload1arg (int* arg) { arg = 0; return 13;}
|
||||
int foo::overload1arg (void* arg) { arg = 0; return 14;}
|
||||
|
||||
/* Test to see that we can explicitly request overloaded functions
|
||||
with function pointers in the prototype. */
|
||||
|
|
|
|||
|
|
@ -80,6 +80,8 @@ set re_methods "${re_methods}${ws}int overload1arg\\(long( int)?\\);"
|
|||
set re_methods "${re_methods}${ws}int overload1arg\\((unsigned long|long unsigned)( int)?\\);"
|
||||
set re_methods "${re_methods}${ws}int overload1arg\\(float\\);"
|
||||
set re_methods "${re_methods}${ws}int overload1arg\\(double\\);"
|
||||
set re_methods "${re_methods}${ws}int overload1arg\\(int \\*\\);"
|
||||
set re_methods "${re_methods}${ws}int overload1arg\\(void \\*\\);"
|
||||
set re_methods "${re_methods}${ws}int overloadfnarg\\((void|)\\);"
|
||||
set re_methods "${re_methods}${ws}int overloadfnarg\\(int\\);"
|
||||
set re_methods "${re_methods}${ws}int overloadfnarg\\(int, int ?\\(\\*\\) ?\\(int\\)\\);"
|
||||
|
|
@ -256,6 +258,14 @@ gdb_test "print foo_instance1.overload1arg((double)arg12)" \
|
|||
"\\$\[0-9\]+ = 12" \
|
||||
"print call overloaded func double arg"
|
||||
|
||||
gdb_test "print foo_instance1.overload1arg(&arg13)" \
|
||||
"\\$\[0-9\]+ = 13" \
|
||||
"print call overloaded func int\\* arg"
|
||||
|
||||
gdb_test "print foo_instance1.overload1arg(&arg14)" \
|
||||
"\\$\[0-9\]+ = 14" \
|
||||
"print call overloaded func char\\* arg"
|
||||
|
||||
# ---
|
||||
|
||||
# List overloaded functions.
|
||||
|
|
|
|||
Loading…
Reference in New Issue