Fix a couple C++ build issues

Building mingw GDB with --enable-build-with-cxx shows:

../../binutils-gdb/gdb/python/py-unwind.c:500:45: error: cannot convert 'cached_frame_info::reg_info*' to 'pyuw_prev_register(frame_info*, void**, int)::reg_info*' in initialization
   struct reg_info *reg_info = cached_frame->reg;
                                             ^
../../binutils-gdb/gdb/python/py-unwind.c:501:60: error: invalid use of incomplete type 'struct pyuw_prev_register(frame_info*, void**, int)::reg_info'
   struct reg_info *reg_info_end = reg_info + cached_frame->reg_count;
                                                            ^
../../binutils-gdb/gdb/python/py-unwind.c:500:10: error: forward declaration of 'struct pyuw_prev_register(frame_info*, void**, int)::reg_info'
   struct reg_info *reg_info = cached_frame->reg;
          ^
../../binutils-gdb/gdb/python/py-unwind.c:505:37: error: cannot increment a pointer to incomplete type 'pyuw_prev_register(frame_info*, void**, int)::reg_info'
   for (; reg_info < reg_info_end; ++reg_info)
                                     ^
../../binutils-gdb/gdb/python/py-unwind.c:507:29: error: invalid use of incomplete type 'struct pyuw_prev_register(frame_info*, void**, int)::reg_info'
       if (regnum == reg_info->number)
                             ^
../../binutils-gdb/gdb/python/py-unwind.c:500:10: error: forward declaration of 'struct pyuw_prev_register(frame_info*, void**, int)::reg_info'
   struct reg_info *reg_info = cached_frame->reg;
          ^
../../binutils-gdb/gdb/python/py-unwind.c:508:68: error: invalid use of incomplete type 'struct pyuw_prev_register(frame_info*, void**, int)::reg_info'
         return frame_unwind_got_bytes (this_frame, regnum, reg_info->data);
                                                                    ^
../../binutils-gdb/gdb/python/py-unwind.c:500:10: error: forward declaration of 'struct pyuw_prev_register(frame_info*, void**, int)::reg_info'
   struct reg_info *reg_info = cached_frame->reg;
          ^
../../binutils-gdb/gdb/python/py-unwind.c: In function 'int pyuw_sniffer(const frame_unwind*, frame_info*, void**)':
../../binutils-gdb/gdb/python/py-unwind.c:574:70: warning: invalid conversion from 'void*' to 'cached_frame_info*' [-fpermissive]
                             reg_count * sizeof (cached_frame->reg[0]));
                                                                      ^
../../binutils-gdb/gdb/python/py-unwind.c: In function 'void pyuw_on_new_gdbarch(gdbarch*)':
../../binutils-gdb/gdb/python/py-unwind.c:636:47: warning: invalid conversion from 'void*' to 'pyuw_gdbarch_data_type*' [-fpermissive]
       gdbarch_data (newarch, pyuw_gdbarch_data);
                                               ^
../../binutils-gdb/gdb/python/py-unwind.c:647:29: warning: invalid conversion from 'void*' to 'const frame_data*' [-fpermissive]
       unwinder->unwind_data = (void *) newarch;
                             ^
../../binutils-gdb/gdb/python/py-unwind.c: At global scope:
../../binutils-gdb/gdb/python/py-unwind.c:699:21: error: redefinition of 'PyTypeObject pending_frame_object_type'
 static PyTypeObject pending_frame_object_type =
                     ^
../../binutils-gdb/gdb/python/py-unwind.c:96:21: error: 'PyTypeObject pending_frame_object_type' previously declared here
 static PyTypeObject pending_frame_object_type
                     ^
../../binutils-gdb/gdb/python/py-unwind.c:749:21: error: redefinition of 'PyTypeObject unwind_info_object_type'
 static PyTypeObject unwind_info_object_type =
                     ^
../../binutils-gdb/gdb/python/py-unwind.c:99:21: error: 'PyTypeObject unwind_info_object_type' previously declared here
 static PyTypeObject unwind_info_object_type
                     ^

The first kind of error is caused by the embedded struct definition,
so move it out of the parent struct.

The second kind of error is caused by forward declaring a static
global variable, which works in C, but not in C++ (or C with
-fno-common).  Make it using extern instead, like done in other
similar cases.

gdb/ChangeLog:
2015-05-15  Yuanhui Zhang  <asmwarrior@gmail.com>

	* python/py-unwind.c (struct reg_info): Move out of ...
	(struct cached_frame_info): ... this scope.
	(pending_frame_object_type, unwind_info_object_type): Make extern.
This commit is contained in:
Yuanhui Zhang 2015-05-15 16:00:40 +01:00 committed by Pedro Alves
parent 9cd4d857bb
commit 13fa0398d7
2 changed files with 20 additions and 12 deletions

View File

@ -1,3 +1,9 @@
2015-05-15 Yuanhui Zhang <asmwarrior@gmail.com>
* python/py-unwind.c (struct reg_info): Move out of ...
(struct cached_frame_info): ... this scope.
(pending_frame_object_type, unwind_info_object_type): Make extern.
2015-05-15 Joel Brobecker <brobecker@adacore.com>
* ada-lang.c (ada_value_primitive_packed_val): Make sure

View File

@ -72,6 +72,15 @@ typedef struct
/* The data we keep for a frame we can unwind: frame ID and an array of
(register_number, register_value) pairs. */
struct reg_info
{
/* Register number. */
int number;
/* Register data bytes pointer. */
gdb_byte data[MAX_REGISTER_SIZE];
};
typedef struct
{
/* Frame ID. */
@ -83,20 +92,13 @@ typedef struct
/* Length of the `reg' array below. */
int reg_count;
struct reg_info
{
/* Register number. */
int number;
/* Register data bytes pointer. */
gdb_byte data[MAX_REGISTER_SIZE];
} reg[];
struct reg_info reg[];
} cached_frame_info;
static PyTypeObject pending_frame_object_type
extern PyTypeObject pending_frame_object_type
CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("pending_frame_object");
static PyTypeObject unwind_info_object_type
extern PyTypeObject unwind_info_object_type
CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("unwind_info_object");
static unsigned int pyuw_debug = 0;
@ -696,7 +698,7 @@ static PyMethodDef pending_frame_object_methods[] =
{NULL} /* Sentinel */
};
static PyTypeObject pending_frame_object_type =
PyTypeObject pending_frame_object_type =
{
PyVarObject_HEAD_INIT (NULL, 0)
"gdb.PendingFrame", /* tp_name */
@ -746,7 +748,7 @@ static PyMethodDef unwind_info_object_methods[] =
{ NULL } /* Sentinel */
};
static PyTypeObject unwind_info_object_type =
PyTypeObject unwind_info_object_type =
{
PyVarObject_HEAD_INIT (NULL, 0)
"gdb.UnwindInfo", /* tp_name */