"Conflicting types" build failure(s) — clang 3.4

clang considers conflicting declarations as error while gcc just shows a warning
// clang  -c  foo.c
#include <stdio.h>
char *getline(int fd) { return NULL; }
PackageVersionSupposed error messageFull log Bug report
acedb 4.9.39+dfsg.01-5aqlparse.l:219:6: error: conflicting types for 'yyerror' Log
aprsd 1:2.2.5-13-5.2cstring:100:3: error: conflicting types for 'memchr' Log
dsbltesters 0.9.5-4httptest.c:41:7: error: conflicting types for 'getline' Log 753431
eztrace 0.9.1-5eztrace_convert_core.c:1031:6: error: conflicting types for 'wait_for_main_thread' Log 743007
getfem++ 4.2.1~beta1~svn4482~dfsg-2../superlu/slu_ddefs.h:140:16: error: conflicting types for 'countnz' Log
gnats 4.1.0-2./gnats.h:140:12: error: conflicting types for 'asprintf' Log
jackeq 0.5.9-2main.c:251:6: error: conflicting types for 'getSettings' Log 753432
liblouisxml 2.4.0-5transcriber.c:87:1: error: conflicting types for 'widecharcpy' Log 753434
mokomaze 0.5.5+git8+dfsg0-3mainwindow.c:705:6: error: conflicting types for 'GoFallFixed' Log 753436
mutt 1.5.21-6.4../compress.c:297:6: error: conflicting types for 'restore_path' Log 753437
opencv 2.4.6.1+dfsg-2setjmp.h:59:12: error: conflicting types for '__sigsetjmp' Log
pccts 1.33MR33-6genmk.c:971:1: error: conflicting types for 'pclasses' Log 753538
sdlpango 0.1.2-6SDL_Pango.c:714:1: error: conflicting types for 'SDLPango_CopyFTBitmapToSurface' Log 753539
tnef 1.4.9-1tnef.c:389:6: error: conflicting types for 'free_bodies' Log 753540
xtrkcad 1:4.0.2-2gtkhelp.c:640:6: error: conflicting types for 'load_into_view' Log 753541

15 errors