* fork.cc (fork_parent): Save parent pid in a temporary variable since child

could conceivably exit before function returns, rendering the child's shared
memory area invalid.
* cygtls.h (_cygtls::incyg): Declare new field.
(_cygtls::in_exception): Define new function.
* exceptions.cc (setup_handler): Remove locked flag.  Use 'incyg' flag and
in_exception function to determine when we're in a cygwin function.
(_cygtls::call_signal_handler): Decrement incyg flag prior to calling a
handler.  Increment it on return.
* gendef (_sigfe): Increment incyg flag.  Use testl for zero testing rather
than orl, for consistency.
(_sigbe): Decrement incyg flag.  Use testl for zero testing rather than orl,
for consistency.
(_cygtls::pop): Use testl for zero testing rather than orl, for consistency.
(stabilize_sig_stack): Ditto.

1 files changed, 3 insertions, 1 deletions

diff --git a/winsup/cygwin/cygtls.h b/winsup/cygwin/cygtls.h
index 444da265c..5e2576635 100644
--- a/winsup/cygwin/cygtls.h
+++ b/winsup/cygwin/cygtls.h
@@ -113,6 +113,7 @@ struct _cygtls
   int sig;
   unsigned stacklock;
   unsigned spinning;
+  unsigned incyg;
   __stack_t stack[TLS_STACK_SIZE];
   unsigned padding[0];
 
@@ -126,7 +127,8 @@ struct _cygtls
   void remove (DWORD);
   void push (__stack_t, bool) __attribute__ ((regparm (3)));
   __stack_t pop () __attribute__ ((regparm (1)));
-  bool isinitialized () {return initialized == CYGTLS_INITIALIZED || initialized == CYGTLS_EXCEPTION;}
+  bool isinitialized () const {return initialized == CYGTLS_INITIALIZED || initialized == CYGTLS_EXCEPTION;}
+  bool in_exception () const {return initialized == CYGTLS_EXCEPTION;}
   void set_state (bool);
   void reset_exception ();
   bool interrupt_now (CONTEXT *, int, void *, struct sigaction&)