fixes

examples/50-smoke.sx

@@ -769,6 +769,12 @@ END;
     ip3 := @out3.inner;
     print("ptr-nested-field: {} {} {}\n", ip3.a, ip3.b, ip3.c);
 
+    // Store to many-pointer field must not corrupt adjacent memory
+    MpHolder :: struct { items: [*]s64; sentinel: s64; }
+    mph := MpHolder.{ items = xx 0, sentinel = 42 };
+    mph.items = xx 0;
+    print("mp-store-sentinel: {}\n", mph.sentinel);
+
     // --- Vectors ---
     vc := vec3(1, 3, 2);
     print("vec-construct: {}\n", vc);
@@ -3165,6 +3171,10 @@ END;
                 print("wasm 64-bit??\n");
             }
         }
+
+        // POINTER_SIZE in regular (non-inline) if expression
+        ps := if POINTER_SIZE == 8 then "8" else "4";
+        print("pointer size via if: {}\n", ps);
     }
 
     // ── Trailing commas ──────────────────────────────────────────

examples/51-compound-assign-global.sx

@@ -0,0 +1,55 @@
+// Test: compound assignment operators on global variables
+// Ensures += -= *= /= %= &= |= ^= <<= >>= all do load-modify-store
+
+#import "modules/std.sx";
+
+g_add : s64 = 10;
+g_sub : s64 = 10;
+g_mul : s64 = 10;
+g_div : s64 = 100;
+g_mod : s64 = 10;
+g_and : s64 = 0xff;
+g_or  : s64 = 0x0f;
+g_xor : s64 = 0xff;
+g_shl : s64 = 1;
+g_shr : s64 = 256;
+
+main :: () -> void {
+    // += repeated: should accumulate, not reset
+    g_add += 1;
+    g_add += 1;
+    g_add += 1;
+    print("add: {}\n", g_add);  // 13
+
+    g_sub -= 3;
+    g_sub -= 2;
+    print("sub: {}\n", g_sub);  // 5
+
+    g_mul *= 2;
+    g_mul *= 3;
+    print("mul: {}\n", g_mul);  // 60
+
+    g_div /= 5;
+    g_div /= 4;
+    print("div: {}\n", g_div);  // 5
+
+    g_mod %= 3;
+    print("mod: {}\n", g_mod);  // 1
+
+    g_and &= 0x0f;
+    print("and: {}\n", g_and);  // 15
+
+    g_or |= 0xf0;
+    print("or: {}\n", g_or);   // 255
+
+    g_xor ^= 0x0f;
+    print("xor: {}\n", g_xor); // 240
+
+    g_shl <<= 4;
+    g_shl <<= 2;
+    print("shl: {}\n", g_shl); // 64
+
+    g_shr >>= 3;
+    g_shr >>= 2;
+    print("shr: {}\n", g_shr); // 8
+}