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The symbol descriptor is the character which follows the colon in many stabs, and which tells what kind of stab it is. See String Field, for more information about their use.
digit(-Variable on the stack; see Stack Variables.
:C++ nested symbol; see See Nested Symbols.
aParameter passed by reference in register; see Reference Parameters.
bBased variable; see Based Variables.
cConstant; see Constants.
CConformant array bound (Pascal, maybe other languages); Conformant Arrays. Name of a caught exception (GNU C++). These can be
distinguished because the latter uses N_CATCH and the former uses
another symbol type.
dFloating point register variable; see Register Variables.
DParameter in floating point register; see Register Parameters.
fFile scope function; see Procedures.
FGlobal function; see Procedures.
GGlobal variable; see Global Variables.
iSee Register Parameters.
IInternal (nested) procedure; see Nested Procedures.
JInternal (nested) function; see Nested Procedures.
LLabel name (documented by AIX, no further information known).
mModule; see Procedures.
pArgument list parameter; see Parameters.
pPSee Parameters.
pFFortran Function parameter; see Parameters.
PUnfortunately, three separate meanings have been independently invented
for this symbol descriptor. At least the GNU and Sun uses can be
distinguished by the symbol type. Global Procedure (AIX) (symbol type
used unknown); see Procedures. Register parameter (GNU) (symbol
type N_PSYM); see Parameters. Prototype of function
referenced by this file (Sun acc) (symbol type N_FUN).
QStatic Procedure; see Procedures.
RRegister parameter; see Register Parameters.
rRegister variable; see Register Variables.
SFile scope variable; see Statics.
sLocal variable (OS9000).
tType name; see Typedefs.
TEnumeration, structure, or union tag; see Typedefs.
vParameter passed by reference; see Reference Parameters.
VProcedure scope static variable; see Statics.
xConformant array; see Conformant Arrays.
XFunction return variable; see Parameters.
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