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-rw-r--r--src/wrapped/wrappedlibc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/wrapped/wrappedlibc.c b/src/wrapped/wrappedlibc.c
index abb4cd26..3c820289 100644
--- a/src/wrapped/wrappedlibc.c
+++ b/src/wrapped/wrappedlibc.c
@@ -3015,6 +3015,8 @@ EXPORT void* my_mmap64(x64emu_t* emu, void *addr, size_t length, int prot, int f
             setProtection_mmap((uintptr_t)ret, length, prot);
         else
             setProtection((uintptr_t)ret, length, prot);
+        if(old_addr && ret!=old_addr)
+            errno = EEXIST;
     }
     return ret;
 }