Fix errcontext() function

*** original/pgsql/src/backend/utils/error/elog.c	2012-11-06 02:11:02.942057121 +0900
--- new/pgsql/src/backend/utils/error/elog.c	2012-11-06 02:11:02.871000898 +0900
***************
*** 673,685 ****
   * to the edata field because the buffer might be considerably larger than
   * really necessary.
   */
! #define EVALUATE_MESSAGE(targetfield, appendval, translateit)  \
  	{ \
  		char		   *fmtbuf; \
  		StringInfoData	buf; \
  		/* Internationalize the error format string */ \
  		if (translateit && !in_error_recursion_trouble()) \
! 			fmt = dgettext(edata->domain, fmt); \
  		/* Expand %m in format string */ \
  		fmtbuf = expand_fmt_string(fmt, edata); \
  		initStringInfo(&buf); \
--- 673,685 ----
   * to the edata field because the buffer might be considerably larger than
   * really necessary.
   */
! #define EVALUATE_MESSAGE_DOMAIN(textdomain, targetfield, appendval, translateit)  \
  	{ \
  		char		   *fmtbuf; \
  		StringInfoData	buf; \
  		/* Internationalize the error format string */ \
  		if (translateit && !in_error_recursion_trouble()) \
! 			fmt = dgettext((textdomain == NULL ? edata->domain : textdomain), fmt); \
  		/* Expand %m in format string */ \
  		fmtbuf = expand_fmt_string(fmt, edata); \
  		initStringInfo(&buf); \
***************
*** 708,713 ****
--- 708,716 ----
  		pfree(buf.data); \
  	}
  
+ #define EVALUATE_MESSAGE(targetfield, appendval, translateit)	\
+ 	EVALUATE_MESSAGE_DOMAIN(NULL, targetfield, appendval, translateit)
+ 
  /*
   * Same as above, except for pluralized error messages.  The calling routine
   * must be declared like "const char *fmt_singular, const char *fmt_plural,
***************
*** 952,958 ****
   * states.
   */
  int
! errcontext(const char *fmt,...)
  {
  	ErrorData  *edata = &errordata[errordata_stack_depth];
  	MemoryContext oldcontext;
--- 955,961 ----
   * states.
   */
  int
! errcontext_domain(const char *domain, const char *fmt,...)
  {
  	ErrorData  *edata = &errordata[errordata_stack_depth];
  	MemoryContext oldcontext;
***************
*** 961,974 ****
  	CHECK_STACK_DEPTH();
  	oldcontext = MemoryContextSwitchTo(ErrorContext);
  
! 	EVALUATE_MESSAGE(context, true, true);
  
  	MemoryContextSwitchTo(oldcontext);
  	recursion_depth--;
  	return 0;					/* return value does not matter */
  }
  
- 
  /*
   * errhidestmt --- optionally suppress STATEMENT: field of log entry
   *
--- 964,976 ----
  	CHECK_STACK_DEPTH();
  	oldcontext = MemoryContextSwitchTo(ErrorContext);
  
! 	EVALUATE_MESSAGE_DOMAIN(domain, context, true, true);
  
  	MemoryContextSwitchTo(oldcontext);
  	recursion_depth--;
  	return 0;					/* return value does not matter */
  }
  
  /*
   * errhidestmt --- optionally suppress STATEMENT: field of log entry
   *

*** original/pgsql/src/include/utils/elog.h	2012-11-06 02:11:02.960963602 +0900
--- new/pgsql/src/include/utils/elog.h	2012-11-06 02:11:02.888953895 +0900
***************
*** 109,114 ****
--- 109,117 ----
  #define ereport(elevel, rest)	\
  	ereport_domain(elevel, TEXTDOMAIN, rest)
  
+ #define errcontext(...)	\
+ 	errcontext_domain(TEXTDOMAIN, __VA_ARGS__)
+ 
  #define TEXTDOMAIN NULL
  
  extern bool errstart(int elevel, const char *filename, int lineno,
***************
*** 173,182 ****
  __attribute__((format(PG_PRINTF_ATTRIBUTE, 1, 2)));
  
  extern int
! errcontext(const char *fmt,...)
  /* This extension allows gcc to check the format string for consistency with
     the supplied arguments. */
! __attribute__((format(PG_PRINTF_ATTRIBUTE, 1, 2)));
  
  extern int	errhidestmt(bool hide_stmt);
  
--- 176,185 ----
  __attribute__((format(PG_PRINTF_ATTRIBUTE, 1, 2)));
  
  extern int
! errcontext_domain(const char *domain, const char *fmt,...)
  /* This extension allows gcc to check the format string for consistency with
     the supplied arguments. */
! __attribute__((format(PG_PRINTF_ATTRIBUTE, 2, 3)));
  
  extern int	errhidestmt(bool hide_stmt);