Random speculation about the reason for PPC64 buildfarm failures:

tglsfdc · tglsfdc · commit 557faa4fb3a7 · 2008-10-06T05:03:27.000Z
maybe isalnum is returning a value with the low-order byte all zero?
diff --git a/src/backend/utils/adt/formatting.c b/src/backend/utils/adt/formatting.c
@@ -1,7 +1,7 @@
 /* -----------------------------------------------------------------------
  * formatting.c
  *
- * $PostgreSQL: pgsql/src/backend/utils/adt/formatting.c,v 1.148 2008/09/26 15:35:28 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/formatting.c,v 1.149 2008/10/06 05:03:27 tgl Exp $
  *
  *
  *	 Portions Copyright (c) 1999-2008, PostgreSQL Global Development Group
@@ -1549,7 +1549,7 @@ char *
 str_initcap(const char *buff, size_t nbytes)
 {
 	char		*result;
-	bool		wasalnum = false;
+	int			wasalnum = false;
 
 	if (!buff)
 		return NULL;

Original file line number	Diff line number	Diff line change
`@@ -1,7 +1,7 @@`
`1`	`1`	`/* -----------------------------------------------------------------------`
`2`	`2`	`* formatting.c`
`3`	`3`	`*`
`4`		`- * $PostgreSQL: pgsql/src/backend/utils/adt/formatting.c,v 1.148 2008/09/26 15:35:28 tgl Exp $`
	`4`	`+ * $PostgreSQL: pgsql/src/backend/utils/adt/formatting.c,v 1.149 2008/10/06 05:03:27 tgl Exp $`
`5`	`5`	`*`
`6`	`6`	`*`
`7`	`7`	`* Portions Copyright (c) 1999-2008, PostgreSQL Global Development Group`
`@@ -1549,7 +1549,7 @@ char *`
`1549`	`1549`	`str_initcap(const char *buff, size_t nbytes)`
`1550`	`1550`	`{`
`1551`	`1551`	`char *result;`
`1552`		`- bool wasalnum = false;`
	`1552`	`+ int wasalnum = false;`
`1553`	`1553`
`1554`	`1554`	`if (!buff)`
`1555`	`1555`	`return NULL;`