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-rw-r--r--lib/ExecutionEngine/JIT/JITEmitter.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/ExecutionEngine/JIT/JITEmitter.cpp b/lib/ExecutionEngine/JIT/JITEmitter.cpp
index e6dc706d55..9e62f13ce7 100644
--- a/lib/ExecutionEngine/JIT/JITEmitter.cpp
+++ b/lib/ExecutionEngine/JIT/JITEmitter.cpp
@@ -73,6 +73,7 @@ static void *getMemory(unsigned NumPages) {
static const long pageSize = sysconf(_SC_PAGESIZE);
#if defined(i386) || defined(__i386__) || defined(__x86__)
+ /* Linux and *BSD tend to have these flags named differently. */
#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
# define MAP_ANONYMOUS MAP_ANON
#endif