Fix negative heap size values reported in WARN

Issue #496 (bdwgc).

WARN_PRIuPTR is now used to print unsigned values in WARN() calls.
Also, byte values are replaced with KiB ones in some WARN() calls.

* allchblk.c (GC_allochblk_nth): Use WARN_PRIuPTR specifier instead of
WARN_PRIdPTR.
* alloc.c (GC_expand_hp_inner, GC_collect_or_expand): Likewise.
* headers.c (GC_scratch_alloc): Likewise.
* mark.c (alloc_mark_stack): Likewise.
* misc.c (GC_enable): Likewise.
* os_dep.c [NEED_PROC_MAPS] (GC_get_maps): Likewise.
* os_dep.c [PROC_VDB] (GC_proc_read_dirty): Likewise.
* win32_threads.c (GC_delete_thread): Likewise.
* allchblk.c (GC_allochblk_nth): Print KiB value instead of in bytes
in WARN message.
* alloc.c (GC_expand_hp_inner): Likewise.
* misc.c (GC_enable): Likewise.
* alloc.c (GC_expand_hp_inner): Remove unneeded cast of bytes to word.
* headers.c (GC_scratch_alloc): Likewise.
* alloc.c [(!AMIGA || !GC_AMIGA_FASTALLOC) && USE_MUNMAP]
(GC_collect_or_expand): Add assertion to indicate that there is no
underflow in GC_heapsize-GC_unmapped_bytes.
* include/private/gc_priv.h (WARN): Update comment.
* include/private/gc_priv.h [!WARN_PRIdPTR] (WARN_PRIuPTR): Define.

1 files changed, 1 insertions, 1 deletions

diff --git a/headers.c b/headers.c
index b40fdfb8..9e4df98f 100644
--- a/headers.c
+++ b/headers.c
@@ -140,7 +140,7 @@ GC_INNER ptr_t GC_scratch_alloc(size_t bytes)
         result = (ptr_t)GET_MEM(bytes_to_get);
         if (EXPECT(NULL == result, FALSE)) {
             WARN("Out of memory - trying to allocate requested amount"
-                 " (%" WARN_PRIdPTR " bytes)...\n", (word)bytes);
+                 " (%" WARN_PRIuPTR " bytes)...\n", bytes);
             bytes_to_get = ROUNDUP_PAGESIZE_IF_MMAP(bytes);
             result = (ptr_t)GET_MEM(bytes_to_get);
             if (result != NULL) {