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(stabs.info)Typedefs

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Giving a Type a Name
====================

   To give a type a name, use the `t' symbol descriptor.  The type is
specified by the type information (Note: String Field) for the stab.
For example,

     .stabs "s_typedef:t16",128,0,0,0     # 128 is N_LSYM

   specifies that `s_typedef' refers to type number 16.  Such stabs
have symbol type `N_LSYM' (or `C_DECL' for XCOFF).  (The Sun
documentation mentions using `N_GSYM' in some cases).

   If you are specifying the tag name for a structure, union, or
enumeration, use the `T' symbol descriptor instead.  I believe C is the
only language with this feature.

   If the type is an opaque type (I believe this is a Modula-2 feature),
AIX provides a type descriptor to specify it.  The type descriptor is
`o' and is followed by a name.  I don't know what the name means--is it
always the same as the name of the type, or is this type descriptor
used with a nameless stab (Note: String Field)?  There optionally
follows a comma followed by type information which defines the type of
this type.  If omitted, a semicolon is used in place of the comma and
the type information, and the type is much like a generic pointer
type--it has a known size but little else about it is specified.