GCC question on #pramga pack I use the arm cross compiler gcc 2.95 Struct definition in the top of the document has been added #pramga pack (1) When the structure can be used in the structural problems encountered [code] #pramga Pack (1) Struct a_t{ Char a1; Char a2; Char a3; Char a4; Char a5; Char a6; }; Struct b_t{ Char b1; Struct a_t a; Char b2 Save_me;) [/code] Assuming the address is 0 save_me.b1 The address is then save_me.b2 0+1+sizeof (structa_t) = 7 However, the compiler I use the cheaper procedure is the address shown b2 9 : ( I estimate compiler for the 'structure of the structure of' the four automatic byte alignment A Dadaist know how to solve this problem? BTW This problem does not exist in the standard gcc 4.0 Do I have to change the compiler Mody You look up your compiler manual. What is needed option. I have not used that # get broad directives, the definition of the struct insert __attribute__ ((packed)), which is the total? Two less than successful referral Gcc4.0 found in the manuals of the parameters' -fpack-struct ' 2.95 in the cross compiler that has bred support Oh Oh. . . . . . We try playing Struct a_t{ Char a1; Char a2; Char a3; Char a4; Char a5; Char a6; ) __attribute__ ((Packed)); Struct (b_t Char b1; Struct a_t a; Char b2; Save_me); Btw, I know they will not do so, causing me a bit : D I heard the landlord's signature is : Trembling on the basic bath __attribute__ ((Packed)) Is this not so? Not right --> Really so Jerusalem : Oops : I only __attribute__ ((packed)); Not there on save_me Now, I have placed this in each of the struct #pragma Pack (1) The deletion of the things I BTW So bad that the translation parameters Fortunately, small procedures If the system used in some old mistakes on the struct #pragma Pack (1) The things I delete? I do not know whether to talk about its uses --> Single byte alignment structure, according to the elements. [ Closed window ]