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Initialize the c++ specific portion of the type structure for union types 

as well as struct types, since gdb attempts to reference that portion for
both types.  Was getting core dumps due to NULL pointer dereferencing.
This commit is contained in:
Fred Fish 1991-11-22 02:30:34 +00:00
parent 9fb2bebda9
commit 4cfd3c4990
2 changed files with 24 additions and 14 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
Thu Nov 21 18:26:11 1991 Fred Fish (fnf at cygnus.com)
* dwarfread.c (struct_type): Must initialize the c++ specific
portion of union types as well as struct types, since gdb attempts
to reference the c++ specific info for both types.
Thu Nov 21 10:23:52 1991 John Gilmore (gnu at cygnus.com)
* defs.h: Incorporate param.h. All users changed.

32
gdb/dwarfread.c
View File

@ -901,24 +901,28 @@ DEFUN(struct_type, (dip, thisdie, enddie),
{
type = alloc_utype (dip -> dieref, NULL);
}
switch (dip -> dietag)
if (dip -> dietag == TAG_structure_type || dip -> dietag == TAG_union_type)
{
TYPE_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *)
obstack_alloc (symbol_obstack, sizeof (struct cplus_struct_type));
(void) memset (TYPE_CPLUS_SPECIFIC (type), 0,
sizeof (struct cplus_struct_type));
if (dip -> dietag == TAG_structure_type)
{
TYPE_CODE (type) = TYPE_CODE_STRUCT;
tpart1 = "struct ";
}
else
{
TYPE_CODE (type) = TYPE_CODE_UNION;
tpart1 = "union ";
}
}
else
{
case TAG_structure_type:
TYPE_CODE (type) = TYPE_CODE_STRUCT;
TYPE_CPLUS_SPECIFIC (type)
= (struct cplus_struct_type *) obstack_alloc (symbol_obstack, sizeof (struct cplus_struct_type));
bzero (TYPE_CPLUS_SPECIFIC (type), sizeof (struct cplus_struct_type));
tpart1 = "struct ";
break;
case TAG_union_type:
TYPE_CODE (type) = TYPE_CODE_UNION;
tpart1 = "union ";
break;
default:
tpart1 = "";
SQUAWK (("missing structure or union tag"));
TYPE_CODE (type) = TYPE_CODE_UNDEF;
break;
}
/* Some compilers try to be helpful by inventing "fake" names for anonymous
enums, structures, and unions, like "~0fake". Thanks, but no thanks. */