some static assertions for packed type sizes

1 files changed, 8 insertions, 6 deletions

diff --git a/c/c.h b/c/c.h
index 787db5d..45ce509 100644
--- a/c/c.h
+++ b/c/c.h
@@ -25,16 +25,18 @@ enum exprkind {
 struct expr {
    uchar t;
    uchar qual;
-   ushort narg; /* ECALL */
    union type ty;
    struct span span;
    union {
      struct {
-        struct expr *sub;
-        struct exgetfld {
-           ushort off;
-           uchar bitsiz, bitoff;
-        } fld; /* EGETF */
+        struct expr *sub; /* child(ren) */
+        union {
+           struct exgetfld {
+              ushort off;
+              uchar bitsiz, bitoff;
+           } fld; /* EGETF */
+           ushort narg; /* ECALL */
+        };
      };
      uvlong u; vlong i; double f; /* ENUMLIT */
      struct {