Silence miscellaneous 64-to-32-bit data loss warnings.

This resolves #341.

include/jemalloc/internal/arena.h

@@ -634,7 +634,7 @@ bool	arena_prof_accum_locked(arena_t *arena, uint64_t accumbytes);
 bool	arena_prof_accum(arena_t *arena, uint64_t accumbytes);
 szind_t	arena_ptr_small_binind_get(const void *ptr, size_t mapbits);
 szind_t	arena_bin_index(arena_t *arena, arena_bin_t *bin);
-unsigned	arena_run_regind(arena_run_t *run, arena_bin_info_t *bin_info,
+size_t	arena_run_regind(arena_run_t *run, arena_bin_info_t *bin_info,
     const void *ptr);
 prof_tctx_t	*arena_prof_tctx_get(const void *ptr);
 void	arena_prof_tctx_set(const void *ptr, size_t usize, prof_tctx_t *tctx);
@@ -1076,11 +1076,10 @@ arena_bin_index(arena_t *arena, arena_bin_t *bin)
 	return (binind);
 }
 
-JEMALLOC_INLINE unsigned
+JEMALLOC_INLINE size_t
 arena_run_regind(arena_run_t *run, arena_bin_info_t *bin_info, const void *ptr)
 {
-	unsigned shift, diff, regind;
-	size_t interval;
+	size_t diff, interval, shift, regind;
 	arena_chunk_map_misc_t *miscelm = arena_run_to_miscelm(run);
 	void *rpages = arena_miscelm_to_rpages(miscelm);
 
@@ -1095,7 +1094,7 @@ arena_run_regind(arena_run_t *run, arena_bin_info_t *bin_info, const void *ptr)
 	 * Avoid doing division with a variable divisor if possible.  Using
 	 * actual division here can reduce allocator throughput by over 20%!
 	 */
-	diff = (unsigned)((uintptr_t)ptr - (uintptr_t)rpages -
+	diff = (size_t)((uintptr_t)ptr - (uintptr_t)rpages -
 	    bin_info->reg0_offset);
 
 	/* Rescale (factor powers of 2 out of the numerator and denominator). */
@@ -1122,9 +1121,9 @@ arena_run_regind(arena_run_t *run, arena_bin_info_t *bin_info, const void *ptr)
 		 * divide by 0, and 1 and 2 are both powers of two, which are
 		 * handled above.
 		 */
-#define	SIZE_INV_SHIFT	((sizeof(unsigned) << 3) - LG_RUN_MAXREGS)
-#define	SIZE_INV(s)	(((1U << SIZE_INV_SHIFT) / (s)) + 1)
-		static const unsigned interval_invs[] = {
+#define	SIZE_INV_SHIFT	((sizeof(size_t) << 3) - LG_RUN_MAXREGS)
+#define	SIZE_INV(s)	(((ZU(1) << SIZE_INV_SHIFT) / (s)) + 1)
+		static const size_t interval_invs[] = {
 		    SIZE_INV(3),
 		    SIZE_INV(4), SIZE_INV(5), SIZE_INV(6), SIZE_INV(7),
 		    SIZE_INV(8), SIZE_INV(9), SIZE_INV(10), SIZE_INV(11),
@@ -1135,8 +1134,8 @@ arena_run_regind(arena_run_t *run, arena_bin_info_t *bin_info, const void *ptr)
 		    SIZE_INV(28), SIZE_INV(29), SIZE_INV(30), SIZE_INV(31)
 		};
 
-		if (likely(interval <= ((sizeof(interval_invs) /
-		    sizeof(unsigned)) + 2))) {
+		if (likely(interval <= ((sizeof(interval_invs) / sizeof(size_t))
+		    + 2))) {
 			regind = (diff * interval_invs[interval - 3]) >>
 			    SIZE_INV_SHIFT;
 		} else

src/arena.c

@@ -301,7 +301,7 @@ JEMALLOC_INLINE_C void *
 arena_run_reg_alloc(arena_run_t *run, arena_bin_info_t *bin_info)
 {
 	void *ret;
-	unsigned regind;
+	size_t regind;
 	arena_chunk_map_misc_t *miscelm;
 	void *rpages;
 
@@ -325,7 +325,7 @@ arena_run_reg_dalloc(arena_run_t *run, void *ptr)
 	size_t mapbits = arena_mapbits_get(chunk, pageind);
 	szind_t binind = arena_ptr_small_binind_get(ptr, mapbits);
 	arena_bin_info_t *bin_info = &arena_bin_info[binind];
-	unsigned regind = arena_run_regind(run, bin_info, ptr);
+	size_t regind = arena_run_regind(run, bin_info, ptr);
 
 	assert(run->nfree < bin_info->nregs);
 	/* Freeing an interior pointer can cause assertion failure. */

src/prof.c

@@ -109,7 +109,7 @@ static char		prof_dump_buf[
     1
 #endif
 ];
-static unsigned		prof_dump_buf_end;
+static size_t		prof_dump_buf_end;
 static int		prof_dump_fd;
 
 /* Do not dump any profiles until bootstrapping is complete. */

src/util.c

@@ -60,7 +60,7 @@ wrtmessage(void *cbopaque, const char *s)
 	 */
 	UNUSED long result = syscall(SYS_write, STDERR_FILENO, s, strlen(s));
 #else
-	UNUSED int result = write(STDERR_FILENO, s, strlen(s));
+	UNUSED ssize_t result = write(STDERR_FILENO, s, strlen(s));
 #endif
 }
 
@@ -90,7 +90,7 @@ buferror(int err, char *buf, size_t buflen)
 
 #ifdef _WIN32
 	FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, 0,
-	    (LPSTR)buf, buflen, NULL);
+	    (LPSTR)buf, (DWORD)buflen, NULL);
 	return (0);
 #elif defined(__GLIBC__) && defined(_GNU_SOURCE)
 	char *b = strerror_r(err, buf, buflen);