2 files changed, 11 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index 9a0654c6..a2d8aa53 100755
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2018-10-01         Nelson H.F. Beebe     <beebe@math.utah.edu>
+
+	* custom.h (__builtin_expect): Define for non-GNU compilers.
+
 2018-09-27         Andrew J. Schorr      <aschorr@telemetry-investments.com>
 
 	* mpfr.c (force_mpnum): Check that base is 10 also before
diff --git a/custom.h b/custom.h
index 468c1a50..8d375c89 100644
--- a/custom.h
+++ b/custom.h
@@ -53,6 +53,13 @@
 #endif
 #endif
 
+/* This keeps regex happy on non-GCC compilers */
+#ifndef __GNUC__
+#ifndef __builtin_expect
+#define __builtin_expect(expr, val) (expr)
+#endif
+#endif
+
 /* For QNX, based on submission from Michael Hunter, mphunter@qnx.com */
 #ifdef __QNX__
 #define GETPGRP_VOID	1