boot2

commit c506d1cf9a1cfb2cffd0944f4a216b878d5c7940
parent e10111ba5d4dd010e5035144d054f587cad507b7
Author: Ryan Sepassi <rsepassi@gmail.com>
Date:   Wed, 29 Apr 2026 12:12:16 -0700

mes-libc: define __std{in,out,err}

Diffstat:
M
vendor/mes-libc/lispcc-syscall.c
 | 
12
++++++++++++

1 file changed, 12 insertions(+), 0 deletions(-)
diff --git a/vendor/mes-libc/lispcc-syscall.c b/vendor/mes-libc/lispcc-syscall.c
@@ -41,6 +41,18 @@ FILE *stdin  = (FILE *) 0;
 FILE *stdout = (FILE *) 1;
 FILE *stderr = (FILE *) 2;
 
+/* `__stdout` and friends (the int-typed fd globals oputs / fdputs read)
+ * are file-scope initialized in mes/mes_open.c — but that initializer
+ * is gated behind `#if SYSTEM_LIBC`, which we don't define. Without
+ * SYSTEM_LIBC we'd be left with only mes/globals.c's tentative
+ * `int __stdout;`, which zero-inits — meaning oputs("ok") writes to
+ * fd 0 (read-only stdin) and silently no-ops. unified-libc.c includes
+ * lispcc-syscall.c before globals.c, so cc.scm's redecl-merge sees
+ * the proper definition first and absorbs the later tentative. */
+int __stdin  = 0;
+int __stdout = 1;
+int __stderr = 2;
+
 extern long sys_read   (long fd, long buf, long n);
 extern long sys_write  (long fd, long buf, long n);
 extern long sys_open   (long path, long flags, long mode);