================
@@ -126,6 +130,36 @@ _LIBUNWIND_HIDDEN int __unw_set_reg(unw_cursor_t *cursor,
unw_regnum_t regNum,
// First, get the FDE for the old location and then update it.
co->getInfo(&info);
co->setInfoBasedOnIPRegister(false);
+
+#if __has_feature(ptrauth_calls)
+ // It is only valid to set the IP within the current function.
+ // This is important for ptrauth, otherwise the IP cannot be correctly
+ // signed.
+ unw_word_t stripped_value =
+ (unw_word_t)ptrauth_strip((void *)value, ptrauth_key_return_address);
+ (void)stripped_value;
+ assert(stripped_value >= info.start_ip && stripped_value <= info.end_ip);
+#endif
+
+ pint_t sp = (pint_t)co->getReg(UNW_REG_SP);
----------------
ojhunt wrote:
I was going to actually look at this to see if even needs to be outside of an
ifdef
https://github.com/llvm/llvm-project/pull/143230
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