Add assertions that GC_page_size is initialized

* alloc.c (GC_expand_hp_inner): Assert that GC_page_size is non-zero.
* backgraph.c (new_back_edges, push_in_progress): Likewise.
* headers.c (GC_scratch_alloc): Likewise.
* mark.c (GC_wait_for_markers_init): Likewise.
* misc.c [GC_READ_ENV_FILE && (MSWIN32 || MSWINCE || CYGWIN32)]
(GC_envfile_init): Likewise.
* os_dep.c [!OS2 && GWW_VDB] (detect_GetWriteWatch): Likewise.
* os_dep.c [MSWIN32] (GC_least_described_address): Likewise.
* os_dep.c [MMAP_SUPPORTED && !MSWIN_XBOX1] (GC_unix_mmap_get_mem):
Likewise.
* os_dep.c [MMAP_SUPPORTED && !USE_MMAP] (GC_unix_sbrk_get_mem):
Likewise.
* os_dep.c [MSWINCE] (GC_wince_get_mem): Likewise.
* os_dep.c [USE_MUNMAP] (GC_unmap_start): Likewise.
* os_dep.c [!GC_DISABLE_INCREMENTAL && MPROTECT_VDB && !DARWIN]
(GC_write_fault_handler): Likewise.
* os_dep.c [!GC_DISABLE_INCREMENTAL && MPROTECT_VDB] (GC_protect_heap,
GC_remove_protection): Likewise.
* os_dep.c [!GC_DISABLE_INCREMENTAL && MPROTECT_VDB && DARWIN]
(catch_exception_raise): Likewise.

1 files changed, 1 insertions, 0 deletions

diff --git a/headers.c b/headers.c
index 199ce85c..a1ab35a3 100644
--- a/headers.c
+++ b/headers.c
@@ -115,6 +115,7 @@ GC_INNER ptr_t GC_scratch_alloc(size_t bytes)
             return result;
         }
 
+        GC_ASSERT(GC_page_size != 0);
         if (bytes >= MINHINCR * HBLKSIZE) {
             bytes_to_get = ROUNDUP_PAGESIZE_IF_MMAP(bytes);
             result = (ptr_t)GET_MEM(bytes_to_get);