cxref build failures

[Matthew Wilcox <willy@debian.org>]

When trying to build cxref, I get the following error:

./cxref -Odoc -NREADME -xref README.c
/usr/lib/gcc-lib/ia64-linux/2.96/include/stdarg.h:43: cxref: parse error, expecting `';'' or `',''

The previous 10, current and next 10 symbols are:
-10 | 295 :            SHORT : int
 -9 | 257 :      $undefined. : _G_uint16_t
 -8 |  59 :                  : ;
 -7 | 284 :           SIZEOF : typedef
 -6 | 298 :           SIGNED : unsigned
 -5 | 295 :            SHORT : int
 -4 | 257 :      $undefined. : _G_uint32_t
 -3 |  59 :                  : ;
 -2 | 284 :           SIZEOF : typedef
 -1 | 257 :      $undefined. : __builtin_va_list
  0 | 257 :      $undefined. : __gnuc_va_list

The line in question is the typedef in:

#ifndef __GNUC_VA_LIST
#define __GNUC_VA_LIST
typedef __builtin_va_list __gnuc_va_list;
#endif

Does cxref need to be taught about __builtin_va_list?

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