Allow building with MSVC and Strawberry perl

adunstan · adunstan · commit 341f4e002d46 · 2022-11-25T15:28:38.000-05:00
Strawberry uses __builtin_expect which Visual C doesn't have. For this
case define it as a noop. Solution taken from vim sources.

Backpatch to all live branches
diff --git a/src/pl/plperl/plperl.h b/src/pl/plperl/plperl.h
@@ -58,6 +58,8 @@
 #ifdef isnan
 #undef isnan
 #endif
+/* Work around for using MSVC and Strawberry Perl >= 5.30. */
+#define __builtin_expect(expr, val) (expr)
 #endif
 
 /*
