boot2

commit 1609330a4c15372a20e6e3478499d792aaf66f9e
parent 6f39189e57b48699aab8e681d4c6426219a970c0
Author: Ryan Sepassi <rsepassi@gmail.com>
Date:   Sun, 26 Apr 2026 22:36:39 -0700

cc/parse: lock in struct member store fixture (§D.2)

The §D.1 dot/arrow rewrite already covered store via cg-assign on
a cg-push-field result; this fixture adds a width-sensitive variant
(u8 fields with *10/*100 multipliers) so any future regression in
field offset or store width surfaces here, not just in §D.1.

Diffstat:
M
docs/CC-PUNCHLIST.md
 | 
10
++++++----
A
tests/cc-parse/37-struct-store.c
 | 
15
+++++++++++++++
A
tests/cc-parse/37-struct-store.expected-exit
 | 
1
+

3 files changed, 22 insertions(+), 4 deletions(-)
diff --git a/docs/CC-PUNCHLIST.md b/docs/CC-PUNCHLIST.md
@@ -154,10 +154,12 @@ broken. Pick one fix and document it in
     global lval `la`'s the label, adds `fo`, stashes via indirect
     slot. Parser `dot` arm replaced.
 
-- [ ] **Struct member store**
-  - cg: `cc-cg/NN-struct-store.scm`
-  - parse: `cc-parse/NN-struct-store.c`
-  - Needs: same primitive plus width-correct stores from §A.
+- [x] **Struct member store**
+  - cg: `cc-cg/37-struct-store.scm` — three u8 fields, distinct
+    multipliers in the readback to isolate per-field width.
+  - parse: `cc-parse/37-struct-store.c`
+  - Done: cg-push-field from §D.1 plus the width-aware store path
+    from §A.1. No new primitive.
 
 - [ ] **Pointer-to-struct (`p->x`)**
   - cg: `cc-cg/NN-arrow.scm`
diff --git a/tests/cc-parse/37-struct-store.c b/tests/cc-parse/37-struct-store.c
@@ -0,0 +1,15 @@
+// tests/cc-parse/37-struct-store.c — struct member store via real C
+// (§D.2 of docs/CC-PUNCHLIST.md). char-typed fields exercise the
+// width-correct store path; distinct multipliers in the readback
+// isolate each field, so any offset/width bug yields a wrong sum.
+//
+// b.a=3; b.b=5; b.c=7; return (b.a + b.b*10 + b.c*100) == 753; -> 1.
+
+int main() {
+    struct B { unsigned char a; unsigned char b; unsigned char c; };
+    struct B b;
+    b.a = 3;
+    b.b = 5;
+    b.c = 7;
+    return (b.a + b.b * 10 + b.c * 100) == 753;
+}
diff --git a/tests/cc-parse/37-struct-store.expected-exit b/tests/cc-parse/37-struct-store.expected-exit
@@ -0,0 +1 @@
+1