Rearrange things to try and diagnose the Windows build issue.

Makefile

@@ -38,15 +38,9 @@ CFLAGS ?= -g \
 	-Werror=strict-prototypes \
 	-fsanitize=unreachable
 
-MANDATORYCFLAGS = \
-	-DUNREACHABLE_CODE='__builtin_unreachable()' \
-	-DNORETURN=_Noreturn
-
 LDFLAGS ?= -g \
 	-fsanitize=unreachable
 
-MANDATORYLDFLAGS =
-
 # Various commands.
 
 AR ?= ar
@@ -82,6 +76,12 @@ INSDIR = $(abspath $(BUILDDIR)/staging)
 PLATIND = $(INSDIR)/share/ack
 PLATDEP = $(INSDIR)/lib/ack
 
+MANDATORYCFLAGS = \
+	-DUNREACHABLE_CODE='__builtin_unreachable()' \
+	-DNORETURN=_Noreturn
+
+MANDATORYLDFLAGS =
+
 .NOTPARALLEL:
 
 ifeq ($(BUILDSYSTEM),)

lang/pc/comp/node.xh

@@ -8,7 +8,6 @@ struct node {
 #define nd_next nd_left
 	struct node *nd_right;
 	int nd_class;		/* kind of node */
-#define Value		0	/* constant */
 #define Name		1	/* an identifier */
 #define Uoper		2	/* unary operator */
 #define Boper		3	/* binary operator */
@@ -24,6 +23,7 @@ struct node {
 #define Cast		13	/* convert integer to real */
 #define IntCoerc	14	/* coercion of integers to longs */
 #define IntReduc	15	/* reduction of longs to integers */
+#define Value		0	/* constant */
 				/* do NOT change the order or the numbers!!! */
 	struct type *nd_type;	/* type of this node */
 	struct token nd_token;