Use abort() instead of exit() to abort library functions

In some hopeless situations, certain library functions in libpq and
libpgport quit the program.  Use abort() for that instead of exit(),
so we don't interfere with the normal exit codes the program might
use, we clearly signal the abnormal termination, and the caller has a
chance of catching the termination.

This was originally pointed out by Debian's Lintian program.

src/interfaces/libpq/fe-print.c

@@ -112,17 +112,17 @@ PQprint(FILE *fout, const PGresult *res, const PQprintOpt *po)
 		if (!(fieldNames = (const char **) calloc(nFields, sizeof(char *))))
 		{
 			fprintf(stderr, libpq_gettext("out of memory\n"));
-			exit(1);
+			abort();
 		}
 		if (!(fieldNotNum = (unsigned char *) calloc(nFields, 1)))
 		{
 			fprintf(stderr, libpq_gettext("out of memory\n"));
-			exit(1);
+			abort();
 		}
 		if (!(fieldMax = (int *) calloc(nFields, sizeof(int))))
 		{
 			fprintf(stderr, libpq_gettext("out of memory\n"));
-			exit(1);
+			abort();
 		}
 		for (numFieldName = 0;
 			 po->fieldName && po->fieldName[numFieldName];
@@ -203,7 +203,7 @@ PQprint(FILE *fout, const PGresult *res, const PQprintOpt *po)
 			if (!(fields = (char **) calloc(nFields * (nTups + 1), sizeof(char *))))
 			{
 				fprintf(stderr, libpq_gettext("out of memory\n"));
-				exit(1);
+				abort();
 			}
 		}
 		else if (po->header && !po->html3)
@@ -391,7 +391,7 @@ do_field(const PQprintOpt *po, const PGresult *res,
 			if (!(fields[i * nFields + j] = (char *) malloc(plen + 1)))
 			{
 				fprintf(stderr, libpq_gettext("out of memory\n"));
-				exit(1);
+				abort();
 			}
 			strcpy(fields[i * nFields + j], pval);
 		}
@@ -462,7 +462,7 @@ do_header(FILE *fout, const PQprintOpt *po, const int nFields, int *fieldMax,
 		if (!border)
 		{
 			fprintf(stderr, libpq_gettext("out of memory\n"));
-			exit(1);
+			abort();
 		}
 		p = border;
 		if (po->standard)
@@ -605,7 +605,7 @@ PQdisplayTuples(const PGresult *res,
 		if (!fLength)
 		{
 			fprintf(stderr, libpq_gettext("out of memory\n"));
-			exit(1);
+			abort();
 		}
 
 		for (j = 0; j < nFields; j++)
@@ -704,7 +704,7 @@ PQprintTuples(const PGresult *res,
 			if (!tborder)
 			{
 				fprintf(stderr, libpq_gettext("out of memory\n"));
-				exit(1);
+				abort();
 			}
 			for (i = 0; i <= width; i++)
 				tborder[i] = '-';

src/interfaces/libpq/libpq-int.h

@@ -483,7 +483,7 @@ extern pgthreadlock_t pg_g_threadlock;
 #define PGTHREAD_ERROR(msg) \
 	do { \
 		fprintf(stderr, "%s\n", msg); \
-		exit(1); \
+		abort(); \
 	} while (0)
 
 

src/port/path.c

@@ -445,7 +445,7 @@ get_progname(const char *argv0)
 	if (progname == NULL)
 	{
 		fprintf(stderr, "%s: out of memory\n", nodir_name);
-		exit(1);				/* This could exit the postmaster */
+		abort();				/* This could exit the postmaster */
 	}
 
 #if defined(__CYGWIN__) || defined(WIN32)