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Hi, I am wondering how I can tell whether a field of a struct is introduced by padding or not. For example, if I have a struct: struct foo1 { char *p; /* 8 bytes */ char c; /* 1 byte long x; /* 8 bytes */ }; clang may generate: struct foo1 { char *p; /* 8 bytes */ char c; /* 1 byte char pad[7]; /* 7 bytes */ long x; /* 8 bytes */ }; Is