================ @@ -115,6 +121,18 @@ extern int unw_set_reg(unw_cursor_t *, unw_regnum_t, unw_word_t) LIBUNWIND_AVAIL extern int unw_set_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t) LIBUNWIND_AVAIL; extern int unw_resume(unw_cursor_t *) LIBUNWIND_AVAIL; +#ifdef LIBUNWIND_HAVE_MSAN +// unw_getcontext is implemented in assembly so it is rather difficult to +// mark the MSan shadow as initialized from within the function. Instead we +// use a macro wrapper when compiling with MSan to avoid false-positives. +#define unw_getcontext(context) \ ---------------- arichardson wrote:
We have to be careful to call unw_getcontext first to avoid registers being clobbered, but yes that would work if we don't need unw_getcontext to be an exported function. Maybe `extern inline __attribute__((always_inline))` could work. https://github.com/llvm/llvm-project/pull/67860 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
