Other Modified Forms of Expressions

The whatis_command  supports supersets of the normal expression  syntax of the language.

whatis-expressions

: whatis-expressions for C

| whatis-expressions for C++

| whatis-expressions for Fortran

Some commands (notably the examine command and the cont command) have a syntax that inhibits the use of a full expression. In this case, a more limited form of expression is still allowed.

address-exp

: address-exp for C

| address-exp for C++

| address-exp for Fortran

The cont command and the change_stack_frame_commands  have a form that specifies where to continue to, or where to cut the stack back to.

loc

: loc for C

| loc for C++

| loc for Fortran

The target  of a modifying_command  can only be a subset of the possible expressions, known as a unary-expression.

unary-expression

: unary-expression for C

| unary-expression for C++

| unary-expression for Fortran