[ctypes-commit] ctypes/sandbox/bitfields bitsizes.c,1.1,1.2

[Thomas H. <th...@us...>]

Update of /cvsroot/ctypes/ctypes/sandbox/bitfields
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv2455

Modified Files:
	bitsizes.c 
Log Message:
GCC packs bit fields differently than MSVC.
Another struct.


Index: bitsizes.c
===================================================================
RCS file: /cvsroot/ctypes/ctypes/sandbox/bitfields/bitsizes.c,v
retrieving revision 1.1
retrieving revision 1.2
diff -C2 -d -r1.1 -r1.2
*** bitsizes.c	13 Oct 2004 17:03:10 -0000	1.1
--- bitsizes.c	13 Oct 2004 17:34:09 -0000	1.2
***************
*** 3,6 ****
--- 3,21 ----
   * bitfields in structures and unions.
   */
+ /*
+   On Windows, it prints:
+ 
+ sizeof(char:4, int:4) = 8
+ sizeof(char:4, int:32) = 8
+ sizeof(char:4, unsigned char:4) = 1
+ 
+    On Linux x86 (Suse, Redhat, x86_64), Mac OS/X, Solaris Sparc:
+ 
+ sizeof(char:4, int:4) = 4
+ sizeof(char:4, int:32) = 8
+ sizeof(char:4, unsigned char:4) = 1
+ 
+ */
+ 
  #include <stdio.h>
  
***************
*** 9,12 ****
--- 24,29 ----
  typedef struct { char a : 4; unsigned char b: 4; } c4uc4;
  
+ typedef struct { char a; char b: 4; int i:4; } a_c4i4;
+ 
  int main(int argc, char **argv)
  {
***************
*** 14,16 ****
--- 31,34 ----
  	printf("sizeof(char:4, int:32) = %d\n", sizeof(c4i32));
  	printf("sizeof(char:4, unsigned char:4) = %d\n", sizeof(c4uc4));
+ 	printf("sizeof(char, char:4, int:4) = %d\n", sizeof(a_c4i4));
  }