tccgen.c: Fix flex array members some more

Last fix didn't work for function f1int in the added testcase.

tccgen.c

@@ -5846,8 +5846,12 @@ static void decl_initializer_alloc(CType *type, AttributeDef *ad, int r,
         if (size < 0) 
             tcc_error("unknown type size");
     }
-    if (flexible_array)
-        size += flexible_array->type.ref->c * pointed_size(&flexible_array->type) + 1;
+    /* If there's a flex member and it was used in the initializer
+       adjust size.  */
+    if (flexible_array &&
+	flexible_array->type.ref->c > 0)
+        size += flexible_array->type.ref->c
+	        * pointed_size(&flexible_array->type);
     /* take into account specified alignment if bigger */
     if (ad->a.aligned) {
         if (ad->a.aligned > align)

tests/tests2/80_flexarray.c

@@ -0,0 +1,25 @@
+#include <stdio.h>
+struct wchar {
+    char *data; char mem[];
+};
+struct wint {
+    char *data; int mem[];
+};
+int f1char (void) {
+    char s[9]="nonono";
+    struct wchar q = {"bugs"};
+    return !s[0];
+}
+int f1int (void) {
+    char s[9]="nonono";
+    struct wint q = {"bugs"};
+    return !s[0];
+}
+int main (void) {
+   char s[9]="nonono";
+   static struct wchar q = {"bugs", {'c'}};
+   //printf ("tcc has %s %s\n", s, q.data);
+   if (f1char() || f1int())
+     printf ("bla\n");
+   return !s[0];
+}