I've committed the following typo fix to both 4.9 and 5.0.
Index: ChangeLog
===================================================================
--- ChangeLog (revision 220347)
+++ ChangeLog (working copy)
@@ -1,3 +1,6 @@
+2015-02-03 Steven G. Kargl <ka...@gcc.gnu.org>
+
+ * intrinsic.texi (CO_ASSOCIATED): c_prt_1 should be c_ptr_1.
2015-01-30 Andre Vehreschild <ve...@gmx.de>
Index: intrinsic.texi
===================================================================
--- intrinsic.texi (revision 220347)
+++ intrinsic.texi (working copy)
@@ -2713,7 +2713,7 @@ end program test_btest
@table @asis
@item @emph{Description}:
-@code{C_ASSOCIATED(c_prt_1[, c_ptr_2])} determines the status of the C pointer
+@code{C_ASSOCIATED(c_ptr_1[, c_ptr_2])} determines the status of the C pointer
@var{c_ptr_1} or if @var{c_ptr_1} is associated with the target @var{c_ptr_2}.
@item @emph{Standard}:
@@ -2723,7 +2723,7 @@ Fortran 2003 and later
Inquiry function
@item @emph{Syntax}:
-@code{RESULT = C_ASSOCIATED(c_prt_1[, c_ptr_2])}
+@code{RESULT = C_ASSOCIATED(c_ptr_1[, c_ptr_2])}
@item @emph{Arguments}:
@multitable @columnfractions .15 .70
--
Steve
