Can GDB print the size of structures from a core dump of a C program?

Question

I'm using GDB to analyze a core dump of a C program. Is it possible to print the size of a struct in the program?

Answer 1

These should all work in GDB (assuming you compiled with -g):

print sizeof(var)
print sizeof(Type)

Answer 2

have u tried "sizeof"?

the complier may do the byte alignment automatically by default,so this size may be greater than you think