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* gdbtypes.c (fill_in_vptr_fieldno): Call check_stub_type.

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* gdbtypes.{c,h}: Improve comments on vptr_fieldno.
This commit is contained in:
Jim Kingdon 1993-08-02 19:21:04 +00:00
parent 19d06401a4
commit ac88287fa2
3 changed files with 21 additions and 4 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
Mon Aug 2 12:06:00 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
* gdbtypes.c (fill_in_vptr_fieldno): Call check_stub_type.
* gdbtypes.{c,h}: Improve comments on vptr_fieldno.
Mon Aug 2 11:58:52 1993 Fred Fish (fnf@deneb.cygnus.com) Mon Aug 2 11:58:52 1993 Fred Fish (fnf@deneb.cygnus.com)
* README: Elaborate on gdb C++ support and cfront support. * README: Elaborate on gdb C++ support and cfront support.

10
gdb/gdbtypes.c
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@ -749,13 +749,19 @@ lookup_struct_elt_type (type, name, noerr)
return (struct type *)-1; /* For lint */ return (struct type *)-1; /* For lint */
} }
/* This function is really horrible, but to avoid it, there would need /* If possible, make the vptr_fieldno and vptr_basetype fields of TYPE
to be more filling in of forward references. */ valid. Callers should be aware that in some cases (for example,
the type or one of its baseclasses is a stub type and we are
debugging a .o file), this function will not be able to find the virtual
function table pointer, and vptr_fieldno will remain -1 and vptr_basetype
will remain NULL. */
void void
fill_in_vptr_fieldno (type) fill_in_vptr_fieldno (type)
struct type *type; struct type *type;
{ {
check_stub_type (type);
if (TYPE_VPTR_FIELDNO (type) < 0) if (TYPE_VPTR_FIELDNO (type) < 0)
{ {
int i; int i;

10
gdb/gdbtypes.h
View file

@ -255,8 +255,7 @@ struct type
} *fields; } *fields;
/* For types with virtual functions, VPTR_BASETYPE is the base class which /* For types with virtual functions, VPTR_BASETYPE is the base class which
defined the virtual function table pointer. VPTR_FIELDNO is defined the virtual function table pointer.
the field number of that pointer in the structure.
For types that are pointer to member types, VPTR_BASETYPE For types that are pointer to member types, VPTR_BASETYPE
is the type that this pointer is a member of. is the type that this pointer is a member of.
@ -265,6 +264,13 @@ struct type
struct type *vptr_basetype; struct type *vptr_basetype;
/* Field number of the virtual function table pointer in
VPTR_BASETYPE. If -1, we were unable to find the virtual
function table pointer in initial symbol reading, and
fill_in_vptr_fieldno should be called to find it if possible.
Unused if this type does not have virtual functions. */
int vptr_fieldno; int vptr_fieldno;
/* Slot to point to additional language-specific fields of this type. */ /* Slot to point to additional language-specific fields of this type. */