Bug 1359052 - Update libFuzzer revision r=franziskus

Differential Revision: https://nss-review.dev.mozaws.net/D296

1 files changed, 3 insertions, 43 deletions

diff --git a/fuzz/config/clone_libfuzzer.sh b/fuzz/config/clone_libfuzzer.sh
index bb50efebb..2edd8c212 100755
--- a/fuzz/config/clone_libfuzzer.sh
+++ b/fuzz/config/clone_libfuzzer.sh
@@ -1,46 +1,6 @@
 #!/bin/sh
 
-d=$(dirname $0)
-$d/git-copy.sh https://chromium.googlesource.com/chromium/llvm-project/llvm/lib/Fuzzer b96a41ac6bbc3824fc7c7977662bebacac8f0983 $d/../libFuzzer
-
-# [https://llvm.org/bugs/show_bug.cgi?id=31318]
-# This prevents a known buffer overrun that won't be fixed as the affected code
-# will go away in the near future. Until that is we have to patch it as we seem
-# to constantly run into it.
-cat <<EOF | patch -p0 -d $d/..
-diff --git libFuzzer/FuzzerLoop.cpp libFuzzer/FuzzerLoop.cpp
---- libFuzzer/FuzzerLoop.cpp
-+++ libFuzzer/FuzzerLoop.cpp
-@@ -476,6 +476,9 @@
-   uint8_t dummy;
-   ExecuteCallback(&dummy, 0);
-
-+  // Number of counters might have changed.
-+  PrepareCounters(&MaxCoverage);
-+
-   for (const auto &U : *InitialCorpus) {
-     if (size_t NumFeatures = RunOne(U)) {
-       CheckExitOnSrcPosOrItem();
-EOF
+LIBFUZZER_REVISION=8837e6cbbc842ab7524b06a2f7360c36add316b3
 
-# Latest Libfuzzer uses __sanitizer_dump_coverage(), a symbol to be introduced
-# with LLVM 4.0. To keep our code working with LLVM 3.x to simplify development
-# of fuzzers we'll just provide it ourselves.
-cat <<EOF | patch -p0 -d $d/..
-diff --git libFuzzer/FuzzerTracePC.cpp libFuzzer/FuzzerTracePC.cpp
---- libFuzzer/FuzzerTracePC.cpp
-+++ libFuzzer/FuzzerTracePC.cpp
-@@ -33,6 +33,12 @@
- ATTRIBUTE_INTERFACE
- uintptr_t __sancov_trace_pc_pcs[fuzzer::TracePC::kNumPCs];
-
-+#if defined(__clang_major__) && (__clang_major__ == 3)
-+void __sanitizer_dump_coverage(const uintptr_t *pcs, uintptr_t len) {
-+  // SanCov in LLVM 4.x will provide this symbol. Make 3.x work.
-+}
-+#endif
-+
- namespace fuzzer {
-
- TracePC TPC;
-EOF
+d=$(dirname $0)
+$d/git-copy.sh https://chromium.googlesource.com/chromium/llvm-project/llvm/lib/Fuzzer $LIBFUZZER_REVISION $d/../libFuzzer