[Valgrind-developers] [valgrind] Darwin: fix warning for hack to prevent crashes during stacktrace generation

[Paul F. <pa...@so...>]

https://sourceware.org/cgit/valgrind/commit/?id=de840f1459832b878fa1f572cec12ae5d315e583

commit de840f1459832b878fa1f572cec12ae5d315e583
Author: Paul Floyd <pj...@wa...>
Date:   Tue Dec 9 09:47:45 2025 +0100

    Darwin: fix warning for hack to prevent crashes during stacktrace generation

Diff:
---
 coregrind/m_stacktrace.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/coregrind/m_stacktrace.c b/coregrind/m_stacktrace.c
index 5175f79fef..b9cf0e62d0 100644
--- a/coregrind/m_stacktrace.c
+++ b/coregrind/m_stacktrace.c
@@ -46,6 +46,11 @@
 #include "pub_core_trampoline.h"
 #include "config.h"
 
+#if defined(VGO_darwin)
+// FIXME PJF this is bad (it's a syswrap private function)
+// but the alternative for the moment is crashes when trying to produce stack traces
+extern Bool ML_(safe_to_deref) ( const void *start, SizeT size );
+#endif
 
 /*------------------------------------------------------------*/
 /*---                                                      ---*/