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arraysdebugginggdbpascal
Minghang Yang
Minghang Yang

Reputation: 33

When using gdb, how to print a part of values in array in Pascal

We know, in C language, if there is an array

int data[100];

then ,in gdb, we can print data[4] to data[14] by typing:

print *(data+4)@11

so, the question is: when we program in Pascal language, we may have an array:

var
   data: array[0..100] of Integer;

when we debug it in gdb, how can we print the value from data[4] to data[14]?

Thank you very much.

Upvotes: 3

Views: 870

Answers (1)

Tom Tromey
Tom Tromey

Reputation: 22549

There is no way to do this when gdb's language is set to Pascal -- nobody ever implemented this extension in the Pascal expression parser.

One workaround is to print the address of the array, then temporarily switch the language to C and print *(type *)addr @ ....

Another workaround would be to write a new gdb command (either using the CLI or using Python) that does what you like. Or, if you are doing a lot of Pascal debugging, you could implement this extension in gdb -- it isn't hard.

Upvotes: 1

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