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* gdb.texinfo (Artificial arrays): Note use of coerce-to-array-type.

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Per Bothner
1995-02-17 23:24:22 +00:00
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gdb/doc/ChangeLog
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@ -1,3 +1,7 @@
Fri Feb 17 15:24:35 1995 Per Bothner <bothner@kalessin.cygnus.com>
* gdb.texinfo (Artificial arrays): Note use of coerce-to-array-type.
Wed Feb 15 11:59:18 1995 J.T. Conklin <jtc@rtl.cygnus.com> Wed Feb 15 11:59:18 1995 J.T. Conklin <jtc@rtl.cygnus.com>
* all-cfg.texi: New flag, GDBSERVE, for NetWare's gdbserve.nlm. * all-cfg.texi: New flag, GDBSERVE, for NetWare's gdbserve.nlm.

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gdb/doc/gdb.texinfo
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@ -4078,6 +4078,22 @@ subscripting, and are coerced to pointers when used in expressions.
Artificial arrays most often appear in expressions via the value history Artificial arrays most often appear in expressions via the value history
(@pxref{Value History, ,Value history}), after printing one out. (@pxref{Value History, ,Value history}), after printing one out.
Another way to create an artificial array is to use a cast.
This re-interprets a value as if it were an array.
The value need not be in memory:
@example
(@value{GDBP}) p/x (short[2])0x12345678
$1 = @{0x1234, 0x5678@}
@end example
As a convenience, if you leave the array length out (as in
@samp{(@var{type})[])@var{value}}) gdb calculates the size to fill
the value (as @samp{sizeof(@var{value})/sizeof(@var{type})}:
@example
(@value{GDBP}) p/x (short[])0x12345678
$2 = @{0x1234, 0x5678@}
@end example
Sometimes the artificial array mechanism is not quite enough; in Sometimes the artificial array mechanism is not quite enough; in
moderately complex data structures, the elements of interest may not moderately complex data structures, the elements of interest may not
actually be adjacent---for example, if you are interested in the values actually be adjacent---for example, if you are interested in the values