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doc: add description for AFL_GCC_DISABLE_VERSION_CHECK

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rapt0r
2024-10-20 16:00:17 +09:00
parent c1d9a4fab9
commit 04d2476b32
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5
docs/env_variables.md
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@ -326,6 +326,11 @@ mode.
[instrumentation/README.instrument_list.md](../instrumentation/README.instrument_list.md) [instrumentation/README.instrument_list.md](../instrumentation/README.instrument_list.md)
for more information. for more information.
Setting `AFL_GCC_DISABLE_VERSION_CHECK=1` will disable the GCC plugin
version check if the target GCC plugin differs from the system-installed
version, resolving issues caused by version mismatches between GCC and
the plugin.
Setting `AFL_GCC_OUT_OF_LINE=1` will instruct afl-gcc-fast to instrument the Setting `AFL_GCC_OUT_OF_LINE=1` will instruct afl-gcc-fast to instrument the
code with calls to an injected subroutine instead of the much more efficient code with calls to an injected subroutine instead of the much more efficient
inline instrumentation. inline instrumentation.

2
src/afl-cc.c
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@ -2958,6 +2958,8 @@ static void maybe_usage(aflcc_state_t *aflcc, int argc, char **argv) {
SAYF( SAYF(
"\nGCC Plugin-specific environment variables:\n" "\nGCC Plugin-specific environment variables:\n"
" AFL_GCC_CMPLOG: log operands of comparisons (RedQueen mutator)\n" " AFL_GCC_CMPLOG: log operands of comparisons (RedQueen mutator)\n"
" AFL_GCC_DISABLE_VERSION_CHECK: disable GCC plugin version "
"control\n"
" AFL_GCC_OUT_OF_LINE: disable inlined instrumentation\n" " AFL_GCC_OUT_OF_LINE: disable inlined instrumentation\n"
" AFL_GCC_SKIP_NEVERZERO: do not skip zero on trace counters\n" " AFL_GCC_SKIP_NEVERZERO: do not skip zero on trace counters\n"
" AFL_GCC_INSTRUMENT_FILE: enable selective instrumentation by " " AFL_GCC_INSTRUMENT_FILE: enable selective instrumentation by "