diff --git a/compiler-rt/lib/fuzzer/FuzzerIOPosix.cpp b/compiler-rt/lib/fuzzer/FuzzerIOPosix.cpp
--- a/compiler-rt/lib/fuzzer/FuzzerIOPosix.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerIOPosix.cpp
@@ -22,6 +22,10 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#if LIBFUZZER_FUCHSIA
+#include <lib/fdio/fdio.h>
+#endif
+
 namespace fuzzer {
 
 bool IsFile(const std::string &Path) {
@@ -124,6 +128,19 @@
   rename(OldPath.c_str(), NewPath.c_str());
 }
 
+#if LIBFUZZER_FUCHSIA
+// In fuchsia, accessing /dev/null is not supported. There's nothing
+// similar to a file that discards everything that is written to it.
+// The way of doing something similar in fuchsia is by using
+// fdio_null_create and binding that to a file descriptor.
+void DiscardOutput(int Fd) {
+  fdio_t *fdio_null = fdio_null_create();
+  if (fdio_null == nullptr) return;
+  int nullfd = fdio_bind_to_fd(fdio_null, -1, 0);
+  if (nullfd < 0) return;
+  dup2(nullfd, Fd);
+}
+#else
 void DiscardOutput(int Fd) {
   FILE* Temp = fopen("/dev/null", "w");
   if (!Temp)
@@ -131,6 +148,7 @@
   dup2(fileno(Temp), Fd);
   fclose(Temp);
 }
+#endif
 
 intptr_t GetHandleFromFd(int fd) {
   return static_cast<intptr_t>(fd);