From 2075cfc9b395b413de1a540f6262e7b994907bee Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Sun, 4 Jun 2023 10:26:48 +0200
Subject: fix associativity of assignment expressions

---
 parse.c | 3 ++-
 test.c  | 5 +++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/parse.c b/parse.c
index 20e517f..228f6c8 100644
--- a/parse.c
+++ b/parse.c
@@ -896,10 +896,11 @@ Postfix:
       lex(pr, &tk);
       ek = bintab[tk.t].t;
       if (ek != ECOND) {
+         bool leftassoc = (bintab[tk.t].k & BCSET) == 0; /* only the assignment operators are right-associative */
          /* ex OP rhs */
          span.sl = tk.span.sl;
          span.ex = ex.span.ex;
-         rhs = exprparse(pr, opprec + 1);
+         rhs = exprparse(pr, opprec + leftassoc);
          if (!joinspan(&span.ex, tk.span.ex) || !joinspan(&span.ex, rhs.span.ex))
             span.ex = tk.span.ex;
          ty = bintypecheck(&span, tk.t, &ex, &rhs);
diff --git a/test.c b/test.c
index b89942a..a2a1a7c 100644
--- a/test.c
+++ b/test.c
@@ -56,9 +56,10 @@ struct f2 f2test(struct f2 *r) {
     return *r;
 }
 
-void memset(volatile char *p, int c, unsigned long n)
+void fill(char *p, int c, unsigned long n)
 {
-    if (n) do *p++ = c; while (--n);
+    int t;
+    if (n) do t = *p++ = c; while (--n);
 }
 
 
-- 
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