From 67d58e2437f268a692f4570c70e58953b43d3042 Mon Sep 17 00:00:00 2001 From: van Hauser Date: Thu, 16 Jul 2020 20:24:01 +0200 Subject: doc updates --- llvm_mode/afl-clang-fast.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) (limited to 'llvm_mode/afl-clang-fast.c') diff --git a/llvm_mode/afl-clang-fast.c b/llvm_mode/afl-clang-fast.c index 8823b6a5..4d01e740 100644 --- a/llvm_mode/afl-clang-fast.c +++ b/llvm_mode/afl-clang-fast.c @@ -768,9 +768,19 @@ int main(int argc, char **argv, char **envp) { #if LLVM_VERSION_MAJOR <= 6 instrument_mode = INSTRUMENT_AFL; #else - if (getenv("AFL_LLVM_INSTRUMENT_FILE") || getenv("AFL_LLVM_WHITELIST")) + if (getenv("AFL_LLVM_INSTRUMENT_FILE") || getenv("AFL_LLVM_WHITELIST")) { + instrument_mode = INSTRUMENT_AFL; - else + WARNF( + "switching to classic instrumentation because " + "AFL_LLVM_INSTRUMENT_FILE does not work with PCGUARD. Use " + "-fsanitize-coverage-allowlist=allowlist.txt if you want to use " + "PCGUARD. See " + "https://clang.llvm.org/docs/" + "SanitizerCoverage.html#partially-disabling-instrumentation"); + + } else + instrument_mode = INSTRUMENT_PCGUARD; #endif @@ -818,9 +828,12 @@ int main(int argc, char **argv, char **envp) { if (instrument_mode == INSTRUMENT_PCGUARD && (getenv("AFL_LLVM_INSTRUMENT_FILE") || getenv("AFL_LLVM_WHITELIST"))) - WARNF( + FATAL( "Instrumentation type PCGUARD does not support " - "AFL_LLVM_INSTRUMENT_FILE!"); + "AFL_LLVM_INSTRUMENT_FILE! Use " + "-fsanitize-coverage-allowlist=allowlist.txt instead, see " + "https://clang.llvm.org/docs/" + "SanitizerCoverage.html#partially-disabling-instrumentation"); if (argc < 2 || strcmp(argv[1], "-h") == 0) { -- cgit 1.4.1