diff options
Diffstat (limited to 'compiler-rt/lib/fuzzer')
| -rw-r--r-- | compiler-rt/lib/fuzzer/FuzzerTracePC.cpp | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/compiler-rt/lib/fuzzer/FuzzerTracePC.cpp b/compiler-rt/lib/fuzzer/FuzzerTracePC.cpp index b6b11f08579..695eee2fa93 100644 --- a/compiler-rt/lib/fuzzer/FuzzerTracePC.cpp +++ b/compiler-rt/lib/fuzzer/FuzzerTracePC.cpp @@ -416,16 +416,20 @@ uintptr_t TracePC::GetMaxStackOffset() const { 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 @@ void __sanitizer_cov_trace_pc_guard(uint32_t *Guard) { 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 |
