[Valgrind-developers] [valgrind] Darwin regtest: small change for memcheck descr_belowsp

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

https://sourceware.org/cgit/valgrind/commit/?id=466aeac29db79999d3bc04b011908ae07c46915c

commit 466aeac29db79999d3bc04b011908ae07c46915c
Author: Paul Floyd <pj...@wa...>
Date:   Thu Mar 19 20:05:18 2026 +0100

    Darwin regtest: small change for memcheck descr_belowsp
    
    On Darwin reading below the bottom of the allowed stack produces a SIGBUS
    not a SIGSEGV. So handle that as well.
    
    The test still fails as the macOS describe mechanism is very different,
    relying on OS vm functions.

Diff:
---
 memcheck/tests/descr_belowsp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/memcheck/tests/descr_belowsp.c b/memcheck/tests/descr_belowsp.c
index 4b429d36ae..ea82e15ea8 100644
--- a/memcheck/tests/descr_belowsp.c
+++ b/memcheck/tests/descr_belowsp.c
@@ -160,6 +160,10 @@ int main(int argc, const char** argv)
 
    if (sigaction (SIGSEGV, &sa, NULL) != 0)
       perror("sigaction");
+#if defined(__APPLE__)
+   if (sigaction (SIGBUS, &sa, NULL) != 0)
+      perror("sigaction");
+#endif
 
    grow_the_stack();
    bad_things_below_sp();