Hi!
Following discussion at https://commitfest.postgresql.org/5/190/ patch, I found
(at seems to me) a way to stringify MAKE_SQLSTATE(), the idea is to use char
array as string:
#include <stdio.h>
#define MAKE_SQLSTATE(ch1,ch2,ch3,ch4,ch5) \
((char[]){(char)(ch1),(char)(ch2),(char)(ch3),(char)(ch4),(char)(ch5),(char)'\0'})
#define ERRCODE_WARNING_DEPRECATED_FEATURE MAKE_SQLSTATE('0','1','P','0','1')
int
main(int argn, char* argv[])
{ char *x = ERRCODE_WARNING_DEPRECATED_FEATURE;
printf("%s\n", x);
return 0;
}
That works for clang ang gcc48 with flags -Wall -Wextra -ansi (or -std=c90)
without warnings, but doesn't work with -pedantic. Is that enough to to work
with other compilers?
--
Teodor Sigaev E-mail: teodor@sigaev.ru
WWW: http://www.sigaev.ru/
