Fix GC_SIZE_MAX definition (Linux/musl-gcc)

(Cherry-pick commit f40fab8 from 'release-7_6' branch.)

* include/private/gc_priv.h [SIZE_MAX] (GC_SIZE_MAX): Cast
SIZE_MAX to size_t explicitly (to workaround incorrect definition
of SIZE_MAX - e.g. it is defined as ~0ULL in musl-tools which is not
correct for a 32-bit target).

diff --git a/include/private/gc_priv.h b/include/private/gc_priv.h
index 38403379b5ba8f06487798ecd0f47f75ed1b07ef..38eba5958bf2b65c6ed29fcd47db309c0c89cb9b 100644 (file)
--- a/include/private/gc_priv.h
+++ b/include/private/gc_priv.h
@@ -94,7 +94,8 @@ typedef char * ptr_t;   /* A generic pointer to which we can add        */
 # include <limits.h>
 #endif
 #ifdef SIZE_MAX
-# define GC_SIZE_MAX SIZE_MAX
+# define GC_SIZE_MAX ((size_t)SIZE_MAX)
+            /* Extra cast to workaround some buggy SIZE_MAX definitions. */
 #else
 # define GC_SIZE_MAX (~(size_t)0)
 #endif