From 35d344babe154bde4e5dfcc01638251cc50e2e79 Mon Sep 17 00:00:00 2001 From: Corinna Vinschen Date: Fri, 10 Mar 2017 20:28:09 +0100 Subject: [PATCH] _dll_crt0: Drop incorrect check for being started from parent main thread This test was broken from the start. It leads to creating a completely new stack for the main thread of the child process when started from the main thread of the parent. However, the main thread of a process can easily running on a completely different stack, if the parent's main thread was created by calling fork() from a pthread. For an example, see https://cygwin.com/ml/cygwin/2017-03/msg00113.html Signed-off-by: Corinna Vinschen --- winsup/cygwin/dcrt0.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc index 8ddee0ca7..ea6adcbbd 100644 --- a/winsup/cygwin/dcrt0.cc +++ b/winsup/cygwin/dcrt0.cc @@ -1041,7 +1041,7 @@ _dll_crt0 () under our own control and avoids collision with the OS. */ if (!dynamically_loaded) { - if (!in_forkee || fork_info->from_main) + if (!in_forkee) { /* Must be static since it's referenced after the stack and frame pointer registers have been changed. */