From d55e586bc6af90cf7a4fecb74aeab3f50bd06e2c Mon Sep 17 00:00:00 2001
From: herman ten brugge <hermantenbrugge@home.nl>
Date: Mon, 14 Sep 2020 19:31:56 +0200
Subject: [PATCH] Fix boundschecking fork for macos/SELINUX

lib/bcheck.c:
- Use INIT_SEM for child process fork on macos

tests/tests2/Makefile:
- tcc -run does not work for fork due to SHARED mmap
---
 lib/bcheck.c          | 5 ++++-
 tests/tests2/Makefile | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/bcheck.c b/lib/bcheck.c
index e96b7ab3..33e15fad 100644
--- a/lib/bcheck.c
+++ b/lib/bcheck.c
@@ -1376,7 +1376,10 @@ pid_t fork(void)
 
     WAIT_SEM();
     retval = (*fork_redir)();
-    POST_SEM();
+    if (retval == 0)
+        INIT_SEM();
+    else
+        POST_SEM();
     return retval;
 }
 #endif
diff --git a/tests/tests2/Makefile b/tests/tests2/Makefile
index 93e4062d..f7f47910 100644
--- a/tests/tests2/Makefile
+++ b/tests/tests2/Makefile
@@ -94,6 +94,7 @@ GEN-ALWAYS =
     ./a.exe
 
 114_bound_signal.test: FLAGS += -b
+114_bound_signal.test: NORUN = true # tcc -run does not support fork and -b and SELINUX
 115_bound_setjmp.test: FLAGS += -b
 116_bound_setjmp2.test: FLAGS += -b
 117_builtins.test: T1 = ( $(TCC) -run $1 && $(TCC) -b -run $1 )