Warning Malformed ' #pragma pack (push[, id], n) '-ignored

Bmp.c:8: warning:malformed ' #pragma pack (push[, id], <n>) '-ignored

Bmp.c:33:warning: #pragma pack (POP) encountered without matching #pragma pack (push, <n>)

This warning is important can not be ignored, I encountered this problem for the compiler is older, because Vedon comes with the virtual machine Ubuntu9.10 with the/work/tools/gcc-3.4.5-glibc-2.3.6, and the video compiler is 4.3, the compiler is higher

, this warning is about the alignment of the structure. For the lower compiler that comes with it, it's easy to fix this problem: modify the two structures in a BMP file

#include <config.h>

#include <pic_operation.h>

#include <picfmt_manager.h>

#include <file.h>

#include <stdlib.h>

#include <string.h>

#pragma pack (push)/* To save current pack set to stack */

#pragma pack (1)/* must be used before the struct definition, so that members of the struct are aligned by 1 bytes */

typedef struct TAGBITMAPFILEHEADER {/* BMFH */

unsigned short bftype;

unsigned long bfsize;

unsigned short bfReserved1;

unsigned short bfReserved2;

unsigned long bfoffbits;

} __attribute__ ((packed)) Bitmapfileheader;

typedef struct TAGBITMAPINFOHEADER {/* BMIH */

unsigned long bisize;

unsigned long biwidth;

unsigned long biheight;

unsigned short biplanes;

unsigned short bibitcount;

unsigned long bicompression;

unsigned long bisizeimage;

unsigned long bixpelspermeter;

unsigned long biypelspermeter;

unsigned long biclrused;

unsigned long biclrimportant;

} __attribute__ ((packed)) Bitmapinfoheader;

#pragma pack (POP)/* Restore previous pack settings */

Warning Malformed ' #pragma pack (push[, id], n) '-ignored