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Re: How to GTYize a struct properly?


> ../../gcc-boehm-custom-marking/gcc/value-prof.h:48: syntax error,
> unexpected '*', expecting ')'
>
> What should I do about it?
>

Have to typedef the pointer due to gengtype silliness, IIRC.

IE typedef struct histogram_value_t *histogram_value_t_p;

then use histogram_value_t_p in the structure with the gty marker.


Still not too good:

/* The value to measure.  */
typedef struct histogram_value_t *histogram_value;
struct histogram_value_t GTY(())
{
 struct
   {
     tree value;		/* The value to profile.  */
     tree stmt;		/* Insn containing the value.  */
     gcov_type *counters;		        /* Pointer to first counter.  */
     histogram_value GTY((chain_next("%h.next"))) next;		/* Linked
list pointer.  */
   } hvalue;
 enum hist_type type;			/* Type of information to measure.  */
 unsigned n_counters;			/* Number of required counters.  */
 union
   {
     struct
	{
	  int int_start;	/* First value in interval.  */
	  unsigned int steps;	/* Number of values in it.  */
	} intvl;	/* Interval histogram data.  */
 } GTY((default("intvl"))) hdata;		/* Profiled information specific data.  */
};

../../gcc-boehm-custom-marking/gcc/value-prof.h:45: syntax error,
unexpected '{', expecting ID


The error is on the opening bracket on the first inner anonymous struct. Maybe this struct should be made non-inner or non-anonymous? Also, what's the deal with single-element union?

--
Laurynas


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