From 51633d70eaefbfdd4039c3b5521697b7630c4ba5 Mon Sep 17 00:00:00 2001
From: MarcoFalke <falke.marco@gmail.com>
Date: Fri, 7 May 2021 15:44:16 +0200
Subject: [PATCH] Merge bitcoin/bitcoin#21874: fuzz: Add
 WRITE_ALL_FUZZ_TARGETS_AND_ABORT

fa5cb6b268554fe0f272833794a98106872ac6a5 fuzz: Add WRITE_ALL_FUZZ_TARGETS_AND_ABORT (MarcoFalke)

Pull request description:

  This is needed when stdout is polluted by the fuzz engine. stderr can't be used instead because it is polluted by aborting the program.

Top commit has no ACKs.

Tree-SHA512: bf0a2a6bcd964ff1f0f3ef6e7e297b4c780430c4d6312332ed99ace0e1c58243c1483fd387e39405837d39b36072dfeb9ae03d2a7aa728ad6955159754fd5766
---
 src/test/fuzz/fuzz.cpp | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/test/fuzz/fuzz.cpp b/src/test/fuzz/fuzz.cpp
index 3c83691a0783f..4b03d88d017c7 100644
--- a/src/test/fuzz/fuzz.cpp
+++ b/src/test/fuzz/fuzz.cpp
@@ -46,13 +46,24 @@ void initialize()
         return WrappedGetAddrInfo(name, false);
     };
 
+    bool should_abort{false};
     if (std::getenv("PRINT_ALL_FUZZ_TARGETS_AND_ABORT")) {
         for (const auto& t : FuzzTargets()) {
             if (std::get<2>(t.second)) continue;
             std::cout << t.first << std::endl;
         }
-        Assert(false);
+        should_abort = true;
     }
+    if (const char* out_path = std::getenv("WRITE_ALL_FUZZ_TARGETS_AND_ABORT")) {
+        std::cout << "Writing all fuzz target names to '" << out_path << "'." << std::endl;
+        std::ofstream out_stream(out_path, std::ios::binary);
+        for (const auto& t : FuzzTargets()) {
+            if (std::get<2>(t.second)) continue;
+            out_stream << t.first << std::endl;
+        }
+        should_abort = true;
+    }
+    Assert(!should_abort);
     std::string_view fuzz_target{Assert(std::getenv("FUZZ"))};
     const auto it = FuzzTargets().find(fuzz_target);
     Assert(it != FuzzTargets().end());