Fix 'arg parameter might be clobbered by setjmp' compiler warning

* mach_dep.c (GC_with_callee_saves_pushed): Make "arg" parameter volatile (to prevent it from potential clobbering).
ivmai · Jul 1, 2016 · 8ffc3db · 8ffc3db
1 parent ef1cdf2
commit 8ffc3db
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mach_dep.c b/mach_dep.c
@@ -218,7 +218,7 @@
 /* are somewhere on the stack, and then call fn(arg, ctxt).             */
 /* ctxt is either a pointer to a ucontext_t we generated, or NULL.      */
 GC_INNER void GC_with_callee_saves_pushed(void (*fn)(ptr_t, void *),
-                                          ptr_t arg)
+                                          volatile ptr_t arg)
 {
     volatile int dummy;
     void * context = 0;