BUG #13617: ecpg cannot handle boolean field within a structure - Mailing list pgsql-bugs

The following bug has been logged on the website:

Bug reference:      13617
Logged by:          Yoong Hor Meng
Email address:      yoonghm@gmail.com
PostgreSQL version: 9.4.4
Operating system:   Linux
Description:

// Compile the source code

#include <stdio.h>
#include <stdlib.h>
#include <ecpglib.h>

/*
psql << "EOF"
#
# Create database 'todo' and table 'items'. Fill the table.
#
CREATE DATABASE todo;

\c todo

CREATE TABLE items
(
  id        serial PRIMARY KEY,
  task      VARCHAR(40) NOT NULL,
  complete  boolean
);

INSERT INTO items (id, task, complete) VALUES (1, 'task1', true);
INSERT INTO items (id, task, complete) VALUES (2, 'task2', true);
INSERT INTO items (id, task, complete) VALUES (3, 'task3', true);
INSERT INTO items (id, task, complete) VALUES (4, 'task4', true);
INSERT INTO items (id, task, complete) VALUES (5, 'task5', false);
INSERT INTO items (id, task, complete) VALUES (6, 'task6', false);

EOF
 */

int
main(void)
{
#if ENABLE_DEBUG
  ECPGdebug(1, stderr);
#endif
  EXEC SQL WHENEVER SQLERROR sqlprint;


EXEC SQL BEGIN DECLARE SECTION;
  /* Use structure as host variable */
  typedef struct {
    int   id;
    char  task[40];
    bool  complete;
  } item_t;
  item_t  item;

  /* Use individual variables as host variables */
  int   id;
  char  task[40];
  bool  complete;

EXEC SQL END DECLARE SECTION;

  memset(&item, 0, sizeof(item_t));

  EXEC SQL CONNECT TO todo;

  /*
   * Use structure as host variable
   */
  EXEC SQL DECLARE cur1 CURSOR FOR
    SELECT id, task, complete
      FROM items;
  EXEC SQL OPEN cur1;

  printf("sizeof(item_t) = %ld\n", sizeof(item));
  printf("   sizeof(item.int)      = %ld\n", sizeof(item.id));
  printf("   sizeof(item.task)     = %ld\n", sizeof(item.task));
  printf("   sizeof(item.complete) = %ld\n", sizeof(item.complete));

  printf("\n"
         "Using structure variable\n"
         "------------------------\n");

  EXEC SQL WHENEVER NOT FOUND DO BREAK;
  while (1)
  {
    EXEC SQL FETCH FROM cur1 INTO :item;

    printf("id=%d, task=%s, complete=%d\n\n",
           item.id, item.task, item.complete);
  }
  EXEC SQL CLOSE cur1;



  /*
   * Use individual variables as host variables
   */
  EXEC SQL DECLARE cur2 CURSOR FOR
    SELECT id, task, complete
      FROM items;
  EXEC SQL OPEN cur2;

  printf("sizeof(int)      = %ld\n", sizeof(id));
  printf("sizeof(task)     = %ld\n", sizeof(task));
  printf("sizeof(complete) = %ld\n", sizeof(complete));

  printf("\n"
         "Using individual variables\n"
         "--------------------------\n");

  EXEC SQL WHENEVER NOT FOUND DO BREAK;
  while (1)
  {
    EXEC SQL FETCH FROM cur2 INTO :id, :task, :complete;

    printf("id=%d, task=%s, complete=%d\n",
           id, task, complete);
  }

  EXEC SQL CLOSE cur2;

  EXEC SQL DISCONNECT ALL;
  return 0;
}


/* Create the database todo and table items as in the source code. Insert
records too.
*/

/*
sizeof(item_t) = 48
   sizeof(item.int)      = 4
   sizeof(item.task)     = 40
   sizeof(item.complete) = 1

Using structure variable
------------------------
SQL error: could not convert boolean value: size mismatch, on line 80
id=1, task=task1, complete=0

SQL error: could not convert boolean value: size mismatch, on line 80
id=2, task=task2, complete=0

SQL error: could not convert boolean value: size mismatch, on line 80
id=3, task=task3, complete=0

SQL error: could not convert boolean value: size mismatch, on line 80
id=4, task=task4, complete=0

SQL error: could not convert boolean value: size mismatch, on line 80
id=5, task=task5, complete=0

SQL error: could not convert boolean value: size mismatch, on line 80
id=6, task=task6, complete=0

sizeof(int)      = 4
sizeof(task)     = 40
sizeof(complete) = 1

Using individual variables
--------------------------
id=1, task=task1, complete=1
id=2, task=task2, complete=1
id=3, task=task3, complete=1
id=4, task=task4, complete=1
id=5, task=task5, complete=0
id=6, task=task6, complete=0

*/