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-rw-r--r--sysdeps/i386/jmpbuf-unwind.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/sysdeps/i386/jmpbuf-unwind.h b/sysdeps/i386/jmpbuf-unwind.h
index ca445f8d24..039159d1ed 100644
--- a/sysdeps/i386/jmpbuf-unwind.h
+++ b/sysdeps/i386/jmpbuf-unwind.h
@@ -22,6 +22,11 @@
 #include <unwind.h>
 #include <sysdep.h>
 
+/* Test if longjmp to JMPBUF would unwind the frame
+   containing a local variable at ADDRESS.  */
+#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \
+  ((void *) (address) < (void *) demangle ((jmpbuf)[JB_SP]))
+
 #define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
   _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)