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http://bugs.debian.org/438155

force structures that are overlaid on files via mmap to be packed so that
alignment doesnt screw up the offsets

--- cpio-2.9/src/cpiohdr.h
+++ cpio-2.9/src/cpiohdr.h
@@ -35,7 +35,7 @@
   unsigned short c_mtimes[2];
   unsigned short c_namesize;
   unsigned short c_filesizes[2];
-};
+} __attribute__((packed));
 
 struct old_ascii_header
 {
@@ -50,7 +50,7 @@
   char c_mtime[11];
   char c_namesize[6];
   char c_filesize[11];
-};
+} __attribute__((packed));
 
 /* "New" portable format and CRC format:
 
@@ -80,7 +80,7 @@
   char c_namesize[8];  /* count includes terminating NUL in pathname */
   char c_chksum[8];    /* 0 for "new" portable format; for CRC format
 			  the sum of all the bytes in the file  */
-};
+} __attribute__((packed));
 
 struct cpio_file_stat /* Internal representation of a CPIO header */
 {