From 1924e4cc6340a2f2fdcf4153986ad7b04d9e39d3 Mon Sep 17 00:00:00 2001
From: Kugel Fuhr <98353208+kugelfuhr@users.noreply.github.com>
Date: Tue, 18 Nov 2025 14:36:16 +0100
Subject: [PATCH] Added a test for #2859.

---
 test/asm/val/bug2859.s | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 test/asm/val/bug2859.s

diff --git a/test/asm/val/bug2859.s b/test/asm/val/bug2859.s
new file mode 100644
index 000000000..cb26191be
--- /dev/null
+++ b/test/asm/val/bug2859.s
@@ -0,0 +1,33 @@
+; Tests for the bug reported in #2859. Boolean not had the correct precedence
+; (as specified in the docs) but worked only correctly at the start of a full
+; expression.
+
+; This one assembles ok since ! is at the start
+.if !.defined(__DOCART__) && .defined(__C64__)
+.byte 1
+.endif
+
+; This one assembles too since a parenthesis restarts a full expression
+.if .defined(__C64__) && (!.defined(__DOCART__))
+.byte 2
+.endif
+
+; This one doesn't work since ! is somewhere in between
+.if .defined(__C64__) && !.defined(__DOCART__)
+.byte 3
+.endif
+
+
+        .import _exit
+        .export _main
+
+                 
+; The following code is an indirect test for the precedence of .not.
+; .not has the lowest precedence, so the expression that is loaded into A
+; evaluates to zero. This has of course to be changed when the precedence
+; of .not is changed.
+_main:
+        lda     #.not 0 + 1             ; Means: .not (0 + 1)
+        ldx     #0
+        jmp     _exit
+