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-rw-r--r--erts/include/internal/i386/atomic.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/erts/include/internal/i386/atomic.h b/erts/include/internal/i386/atomic.h
index 52d01aab32..709a6a17fc 100644
--- a/erts/include/internal/i386/atomic.h
+++ b/erts/include/internal/i386/atomic.h
@@ -26,6 +26,10 @@
#ifndef ETHREAD_I386_ATOMIC_H
#define ETHREAD_I386_ATOMIC_H
+#if ETHR_SIZEOF_LONG != ETHR_SIZEOF_PTR
+# error "Incompatible size of 'long'"
+#endif
+
/* An atomic is an aligned long accessed via locked operations.
*/
typedef struct {