unix/gccollect: Provide declaration of exported function.

dpgeorge · dpgeorge · commit f1dbd2909e86 · 2016-06-28T11:28:50.000+01:00
diff --git a/unix/gccollect.c b/unix/gccollect.c
@@ -136,6 +136,9 @@ STATIC void gc_helper_get_regs(regs_t arr) {
 
 #endif // MICROPY_GCREGS_SETJMP
 
+// this function is used by mpthreadport.c
+void gc_collect_regs_and_stack(void);
+
 void gc_collect_regs_and_stack(void) {
     regs_t regs;
     gc_helper_get_regs(regs);
