+diff -ur rpm-5.4.10/build/files.c rpm-5.4.10-collision/build/files.c
+--- rpm-5.4.10/build/files.c 2013-03-17 13:17:38.233358389 +0100
++++ rpm-5.4.10-collision/build/files.c 2013-03-17 13:07:37.468483625 +0100
+@@ -1323,6 +1323,26 @@
+ return dalgo;
+ }
+
++static int isHardLink(FileListRec flp, FileListRec tlp)
++{
++ return ((S_ISREG(flp->fl_mode) && S_ISREG(tlp->fl_mode)) &&
++ ((flp->fl_nlink > 1) && (flp->fl_nlink == tlp->fl_nlink)) &&
++ (flp->fl_ino == tlp->fl_ino) &&
++ (flp->fl_dev == tlp->fl_dev));
++}
++
++static int seenHardLink(FileList fl, FileListRec flp, ino_t *fileid)
++{
++ FileListRec ilp;
++ for (ilp = fl->fileList; ilp < flp; ilp++) {
++ if (isHardLink(flp, ilp)) {
++ *fileid = ilp - fl->fileList;
++ return 1;
++ }
++ }
++ return 0;
++}
++
+ /**
+ * Add file entries to header.
+ * @todo Should directories have %doc/%config attributes? (#14531)
+@@ -1370,6 +1390,7 @@
+
+ for (i = 0, flp = fl->fileList; i < fl->fileListRecsUsed; i++, flp++) {
+ const char *s;
++ ino_t fileid = flp - fl->fileList;
+
+ /* Merge duplicate entries. */
+ while (i < (fl->fileListRecsUsed - 1) &&
+@@ -1437,6 +1458,13 @@
+ /* Leave room for both dirname and basename NUL's */
+ dpathlen += (strlen(flp->diskURL) + 2);
+
++ /* Excludes and dupes have been filtered out by now. */
++ if (S_ISREG(flp->fl_mode)) {
++ if (flp->fl_nlink == 1 || !seenHardLink(fl, flp, &fileid)) {
++ fl->totalFileSize += flp->fl_size;
++ }
++ }
++
+ /*
+ * Make the header, the OLDFILENAMES will get converted to a
+ * compressed file list write before we write the actual package to
+@@ -1519,7 +1547,11 @@
+
+ /* XXX Hash instead of 64b->32b truncate to prevent aliasing. */
+ { ino_t _ino = flp->fl_ino;
+- ui32 = hashFunctionString(0, &_ino, sizeof(_ino));
++ /* don't use hash here, as hash collisions which happen on large packages
++ cause bus errors in rpmbuild
++ ui32 = hashFunctionString(0, &_ino, sizeof(_ino));
++ */
++ ui32 = fileid + 1;
+ }
+ he->tag = RPMTAG_FILEINODES;
+ he->t = RPM_UINT32_TYPE;
+@@ -1752,39 +1780,6 @@
+ IOSM_MAP_TYPE | IOSM_MAP_MODE | IOSM_MAP_UID | IOSM_MAP_GID;
+ if (isSrc)
+ fi->fmapflags[i] |= IOSM_FOLLOW_SYMLINKS;
+-
+- if (S_ISREG(flp->fl_mode)) {
+- int bingo = 1;
+- /* Hard links need be tallied only once. */
+- if (flp->fl_nlink > 1) {
+- FileListRec jlp = flp + 1;
+- int j = i + 1;
+- for (; (unsigned)j < fi->fc; j++, jlp++) {
+- /* follow outer loop logic */
+- while (((jlp - fl->fileList) < (fl->fileListRecsUsed - 1)) &&
+- !strcmp(jlp->fileURL, jlp[1].fileURL))
+- jlp++;
+- if (jlp->flags & RPMFILE_EXCLUDE) {
+- j--;
+- /*@innercontinue@*/ continue;
+- }
+- if (jlp->flags & RPMFILE_GHOST)
+- /*@innercontinue@*/ continue;
+- if (!S_ISREG(jlp->fl_mode))
+- /*@innercontinue@*/ continue;
+- if (flp->fl_nlink != jlp->fl_nlink)
+- /*@innercontinue@*/ continue;
+- if (flp->fl_ino != jlp->fl_ino)
+- /*@innercontinue@*/ continue;
+- if (flp->fl_dev != jlp->fl_dev)
+- /*@innercontinue@*/ continue;
+- bingo = 0; /* don't tally hardlink yet. */
+- /*@innerbreak@*/ break;
+- }
+- }
+- if (bingo)
+- fl->totalFileSize += flp->fl_size;
+- }
+ }
+
+ ui32 = fl->totalFileSize;
--- rpm-5.4.10/lib/fsm.c~
+++ rpm-5.4.10/lib/fsm.c
@@ -898,6 +898,7 @@ int fsmMapAttrs(IOSM_t fsm)