Debugging with GDB Manual HP WDB v6.3 (5900-2180, August 2012)

For the purposes of C and C++, the following definitions hold:
• Integral types include int with any of its storage-class specifiers; char; enum; and, for C++,
bool.
• Floating-point types include float, double, and long double (if supported by the target
platform).
• Pointer types include all types defined as (type *).
• Scalar types include all of the above.
The following operators are supported. They are listed here in order of increasing precedence:
, The comma or sequencing operator. Expressions in a comma-separated list
are evaluated from left to right, with the result of the entire expression being
the last expression evaluated.
= Assignment. The value of an assignment expression is the value assigned.
Defined on scalar types.
op= Used in an expression of the form a op= b, and translated to a = a op b. op=
and = have the same precedence. op is any one of the operators |, ^, &, <<,
>>, +, -, *, /, %.
?: The ternary operator. a ? b : c can be thought of as: if a then b else c. a should
be of an integral type.
|| Logical OR. Defined on integral types.
&& Logical AND. Defined on integral types.
| Bitwise OR. Defined on integral types.
^ Bitwise exclusive-OR. Defined on integral types.
& Bitwise AND. Defined on integral types.
==, != Equality and inequality. Defined on scalar types. The value of these expressions
is 0 for false and non-zero for true.
<, >, <=, >= Less than, greater than, less than or equal, greater than or equal. Defined on
scalar types. The value of these expressions is 0 for false and non-zero for
true.
<<,>> left shift, and right shift. Defined on integral types.
@ The GDB “artificial array” operator (see “Expressions” (page 63)).
+, - Addition and subtraction. Defined on integral types, floating-point types and
pointer types.
*, /, % Multiplication, division, and modulus. Multiplication and division are defined
on integral and floating-point types. Modulus is defined on integral types.
++, -- Increment and decrement. When appearing before a variable, the operation
is performed before the variable is used in an expression; when appearing
after it, the value of the variable is used before the operation takes place.
* Pointer dereferencing. Defined on pointer types. Same precedence as ++.
& Address operator. Defined on variables. Same precedence as ++.
For debugging C++, GDB implements a use of '&' beyond what is allowed
in the C++ language itself: you can use '&(&ref)' (or, if you prefer, simply
'&&ref') to examine the address where a C++ reference variable (declared
with '&ref') is stored.
- Negative. Defined on integral and floating-point types. Same precedence as
++.
! Logical negation. Defined on integral types. Same precedence as ++.
9.4 Supported languages 81