On 19 May 2014 13:28, Sivaprasad wrote: > Hi Jonathan Wakely, > > Thanks for quick reply. > > Structure is included from same header file,So there is no difference in > structure. You can't conclude that. Defining a macro before including the header could alter the definition of the structure. A #pragma to turn on packed structs that comes before the header could alter the definition. You need to compare the preprocessed output for the two files. >How to get information related to alignments from preprocessor > output.Is there any additional options I need to give apart from "-E". You can't get that information from the preprocessor, you need to work it out by hand.
