i#xxxx: Stub out rseq_is_registered_for_current_thread if HAVE_RSEQ is false.
HAVE_RSEQ allows disabling all use of the rseq syscall at compile time, except for the function `rseq_is_registered_for_current_thread` which uses rseq to infer whether rseq is in use. If HAVE_RSEQ is false, just stub out `rseq_is_registered_for_current_thread` and always return false.
diff --git a/core/unix/rseq_linux.c b/core/unix/rseq_linux.c
index 0602763..67f8f6f 100644
--- a/core/unix/rseq_linux.c
+++ b/core/unix/rseq_linux.c
@@ -269,6 +269,7 @@
rseq_clear_tls_ptr(dcontext);
}
+#ifdef HAVE_RSEQ
bool
rseq_is_registered_for_current_thread(void)
{
@@ -296,6 +297,13 @@
}
return false;
}
+#else
+bool
+rseq_is_registered_for_current_thread(void)
+{
+ return false;
+}
+#endif
static void
rseq_analyze_instructions(rseq_region_t *info)
