[libFuzzer] remove deprecated support for -fsanitize-coverage=trace-pc[-guard]
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer@352564 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/FuzzerTracePC.cpp b/FuzzerTracePC.cpp
index b6b11f0..695eee2 100644
--- a/FuzzerTracePC.cpp
+++ b/FuzzerTracePC.cpp
@@ -416,16 +416,20 @@
return InitialStack - __sancov_lowest_stack; // Stack grows down
}
+void WarnAboutDeprecatedInstrumentation(const char *flag) {
+ Printf("libFuzzer does not support %s any more.\n"
+ "Please either migrate to a compiler that supports -fsanitize=fuzzer\n"
+ "or use an older version of libFuzzer\n", flag);
+ exit(1);
+}
+
} // namespace fuzzer
extern "C" {
ATTRIBUTE_INTERFACE
ATTRIBUTE_NO_SANITIZE_ALL
void __sanitizer_cov_trace_pc_guard(uint32_t *Guard) {
- uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
- uint32_t Idx = *Guard;
- __sancov_trace_pc_pcs[Idx] = PC;
- __sancov_trace_pc_guard_8bit_counters[Idx]++;
+ fuzzer::WarnAboutDeprecatedInstrumentation("-fsanitize-coverage=trace-pc");
}
// Best-effort support for -fsanitize-coverage=trace-pc, which is available
@@ -433,15 +437,14 @@
ATTRIBUTE_INTERFACE
ATTRIBUTE_NO_SANITIZE_ALL
void __sanitizer_cov_trace_pc() {
- uintptr_t PC = reinterpret_cast<uintptr_t>(GET_CALLER_PC());
- uintptr_t Idx = PC & (((uintptr_t)1 << fuzzer::TracePC::kTracePcBits) - 1);
- __sancov_trace_pc_pcs[Idx] = PC;
- __sancov_trace_pc_guard_8bit_counters[Idx]++;
+ fuzzer::WarnAboutDeprecatedInstrumentation(
+ "-fsanitize-coverage=trace-pc-guard");
}
ATTRIBUTE_INTERFACE
void __sanitizer_cov_trace_pc_guard_init(uint32_t *Start, uint32_t *Stop) {
- fuzzer::TPC.HandleInit(Start, Stop);
+ fuzzer::WarnAboutDeprecatedInstrumentation(
+ "-fsanitize-coverage=trace-pc-guard");
}
ATTRIBUTE_INTERFACE