push to stable

fix for issue #1733, set "detect_leaks=0" when ASAN_OPTIONS contains it and LSAN_OPTIONS are not set.

…ection

…'s stage.

Possible missing initialisation in custom mutator

The linker on OpenBSD emits a warning when linking this file:
warning: syscall() may go away, please rewrite code to use direct calls

Fix possible doc inconsistency for custom mutator's queue_get function.

Dev

Use direct call to write to OpenBSD

push back to dev

* afl-cc header

* afl-cc common declarations

 - Add afl-cc-state.c
 - Strip includes, find_object, debug/be_quiet/have_*/callname setting from afl-cc.c
 - Use debugf_args in main
 - Modify execvp stuffs to fit new aflcc struct

* afl-cc show usage

* afl-cc mode selecting

1. compiler_mode by callname in argv[0]
2. compiler_mode by env "AFL_CC_COMPILER"
3. compiler_mode/instrument_mode by command line options "--afl-..."
4. instrument_mode/compiler_mode by various env vars including "AFL_LLVM_INSTRUMENT"
5. final checking steps
6. print "... - mode: %s-%s\n"
7. determine real argv[0] according to compiler_mode

* afl-cc macro defs

* afl-cc linking behaviors

* afl-cc fsanitize behaviors

* afl-cc misc

* afl-cc body update

* afl-cc all-in-one

formated with custom-format.py

* nits

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Co-authored-by: vanhauser-thc <[email protected]>

Make the compiler wrapper stripping `-Wl,-no-undefined` in addition to `-Wl,--no-undefined`.
Both versions of the flag are accepted by clang and, therefore, used by building systems in the wild (e.g., samba will not build without this fix).

The custom_mutators_count check in if case is duplicate with if condition.
The else case is custom_mutators_count == 0, neither custom_mutator_list iteration nor sent check needed.

Signed-off-by: Xeonacid <[email protected]>

* Document new drcov QEMU plugin

* Add link to lightkeeper for QEMU drcov file loading

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Co-authored-by: Jean-Romain Garnier <[email protected]>

#1958)