cvs postgres doesn't compile with libreadline 4.2

debian unstable, i386.
upgrade libreadline 4.2
postgres doesn't compile.

gcc -O2 -Wall -Wmissing-prototypes -Wmissing-declarations -I../../../src/interfaces/libpq -I../../../src/include -c -o tab-complete.o tab-complete.c
tab-complete.c: In function `initialize_readline':
tab-complete.c:103: warning: assignment from incompatible pointer type
tab-complete.c: In function `psql_completion':
tab-complete.c:292: warning: implicit declaration of function `completion_matches'
tab-complete.c:292: warning: assignment makes pointer from integer without a cast
tab-complete.c:296: warning: assignment makes pointer from integer without a cast
tab-complete.c:301: warning: assignment makes pointer from integer without a cast
tab-complete.c:309: warning: assignment makes pointer from integer without a cast
tab-complete.c:320: warning: assignment makes pointer from integer without a cast
tab-complete.c:325: warning: assignment makes pointer from integer without a cast
tab-complete.c:332: warning: assignment makes pointer from integer without a cast
tab-complete.c:337: warning: assignment makes pointer from integer without a cast
tab-complete.c:342: warning: assignment makes pointer from integer without a cast
tab-complete.c:347: warning: assignment makes pointer from integer without a cast
tab-complete.c:350: warning: assignment makes pointer from integer without a cast
tab-complete.c:366: warning: assignment makes pointer from integer without a cast
tab-complete.c:371: warning: assignment makes pointer from integer without a cast
tab-complete.c:378: warning: assignment makes pointer from integer without a cast
tab-complete.c:381: warning: assignment makes pointer from integer without a cast
tab-complete.c:392: warning: assignment makes pointer from integer without a cast
tab-complete.c:400: warning: assignment makes pointer from integer without a cast
tab-complete.c:406: warning: assignment makes pointer from integer without a cast
tab-complete.c:410: warning: assignment makes pointer from integer without a cast
tab-complete.c:413: warning: assignment makes pointer from integer without a cast
tab-complete.c:420: warning: assignment makes pointer from integer without a cast
tab-complete.c:423: warning: assignment makes pointer from integer without a cast
tab-complete.c:429: warning: assignment makes pointer from integer without a cast
tab-complete.c:435: warning: assignment makes pointer from integer without a cast
tab-complete.c:440: warning: assignment makes pointer from integer without a cast
tab-complete.c:448: warning: assignment makes pointer from integer without a cast
tab-complete.c:455: warning: assignment makes pointer from integer without a cast
tab-complete.c:460: warning: assignment makes pointer from integer without a cast
tab-complete.c:465: warning: assignment makes pointer from integer without a cast
tab-complete.c:473: warning: assignment makes pointer from integer without a cast
tab-complete.c:478: warning: assignment makes pointer from integer without a cast
tab-complete.c:490: warning: assignment makes pointer from integer without a cast
tab-complete.c:493: warning: assignment makes pointer from integer without a cast
tab-complete.c:496: warning: assignment makes pointer from integer without a cast
tab-complete.c:506: warning: assignment makes pointer from integer without a cast
tab-complete.c:514: warning: assignment makes pointer from integer without a cast
tab-complete.c:521: warning: assignment makes pointer from integer without a cast
tab-complete.c:532: warning: assignment makes pointer from integer without a cast
tab-complete.c:541: warning: assignment makes pointer from integer without a cast
tab-complete.c:545: warning: assignment makes pointer from integer without a cast
tab-complete.c:553: warning: assignment makes pointer from integer without a cast
tab-complete.c:556: warning: assignment makes pointer from integer without a cast
tab-complete.c:559: warning: assignment makes pointer from integer without a cast
tab-complete.c:569: warning: assignment makes pointer from integer without a cast
tab-complete.c:572: warning: assignment makes pointer from integer without a cast
tab-complete.c:578: warning: assignment makes pointer from integer without a cast
tab-complete.c:582: warning: assignment makes pointer from integer without a cast
tab-complete.c:587: warning: assignment makes pointer from integer without a cast
tab-complete.c:592: warning: assignment makes pointer from integer without a cast
tab-complete.c:599: warning: assignment makes pointer from integer without a cast
tab-complete.c:604: warning: assignment makes pointer from integer without a cast
tab-complete.c:606: warning: assignment makes pointer from integer without a cast
tab-complete.c:608: warning: assignment makes pointer from integer without a cast
tab-complete.c:619: warning: assignment makes pointer from integer without a cast
tab-complete.c:622: warning: assignment makes pointer from integer without a cast
tab-complete.c:626: warning: assignment makes pointer from integer without a cast
tab-complete.c:634: warning: assignment makes pointer from integer without a cast
tab-complete.c:640: warning: assignment makes pointer from integer without a cast
tab-complete.c:646: warning: assignment makes pointer from integer without a cast
tab-complete.c:651: warning: assignment makes pointer from integer without a cast
tab-complete.c:660: warning: assignment makes pointer from integer without a cast
tab-complete.c:666: warning: assignment makes pointer from integer without a cast
tab-complete.c:672: warning: assignment makes pointer from integer without a cast
tab-complete.c:678: warning: assignment makes pointer from integer without a cast
tab-complete.c:682: warning: assignment makes pointer from integer without a cast
tab-complete.c:687: warning: assignment makes pointer from integer without a cast
tab-complete.c:690: warning: assignment makes pointer from integer without a cast
tab-complete.c:698: warning: assignment makes pointer from integer without a cast
tab-complete.c:702: warning: assignment makes pointer from integer without a cast
tab-complete.c:704: warning: assignment makes pointer from integer without a cast
tab-complete.c:709: warning: assignment makes pointer from integer without a cast
tab-complete.c:714: warning: assignment makes pointer from integer without a cast
tab-complete.c:716: warning: assignment makes pointer from integer without a cast
tab-complete.c:718: warning: assignment makes pointer from integer without a cast
tab-complete.c:725: warning: assignment makes pointer from integer without a cast
tab-complete.c:734: `filename_completion_function' undeclared (first use in this function)
tab-complete.c:734: (Each undeclared identifier is reported only once
tab-complete.c:734: for each function it appears in.)
tab-complete.c:734: warning: assignment makes pointer from integer without a cast
tab-complete.c:749: warning: assignment makes pointer from integer without a cast
tab-complete.c:763: warning: assignment makes pointer from integer without a cast
make[3]: *** [tab-complete.o] Error 1

ciao,
andrea