a-2 or ANSI C. AIX
provides extensions to specify these, using the 'f', 'F', 'p', and 'R'
type descriptors.

   First comes the type descriptor.  If it is 'f' or 'F', this type
involves a function rather than a procedure, and the type information
for the return type of the function follows, followed by a comma.  Then
comes the number of parameters to the function and a semicolon.  Then,
for each parameter, there is the name of the parameter followed by a
colon (this is only present for type descriptors 'R' and 'F' which
represent Pascal function or procedure parameters), type information for
the parameter, a comma, 0 if passed by reference or 1 if passed by
value, and a semicolon.  The type definition ends with a semicolon.

   For example, this variable definition:

     int (*g_pf)();

generates the following code:

     .stabs "g_pf:G24=*25=f1",32,0,0,0
         .common _g_pf,4,"bss"

   The variable defines a new type, 24, which is a pointer to another
new type, 25, which is a function returning 'int'.