[tmux] add 6 additional fuzz harnesses#15472
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Adds 18 additional fuzz harnesses (6 targets x 3 generation approaches) covering cmd-parse, format, input-parse, layout-parse, style, and utf8. Targets named <target>-<category>: *-manual: hand-written *-llm: LLM-enhanced with coverage hints *-fuzzgen: FuzzedDataProvider-style structured input The harness sources are vendored under projects/tmux/tmux-oss-fuzz/ and built against tmux's already-compiled object files. The in-tree input-fuzzer continues to be built and shipped unchanged.
Replaces the previous 18-harness set with one harness per parser/processor surface, chosen as the highest-coverage variant from comparative evaluation: input-parse-fuzzer-extra (LLM-enhanced) cmd-parse-fuzzer-extra (LLM-enhanced) layout-parse-fuzzer-extra (manual) utf8-fuzzer-extra (manual) format-fuzzer-extra (manual) style-fuzzer-extra (LLM-enhanced) Dockerfile pins the tmux clone to --branch master so every build runs against current upstream. utf8-fuzzer.c also fixed to only call utf8_from_data() when utf8_fromwc() returned UTF8_DONE, removing a harness-side fatalx() previously surfaced by check_build.
Renames the six vendored fuzz harnesses to <target>-fuzzer-extra.c and places them in a single tmux-oss-fuzz/harnesses/ directory (no manual/ or llm_generated/ subdirectories). build.sh now iterates over the target list directly.
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cglosner is a new contributor to projects/tmux. The PR must be approved by known contributors before it can be merged. The past contributors are: yf0h, DonggeLiu, snizovtsev, inferno-chromium |
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Adds six additional fuzz targets to the tmux project, one per parsing/processing surface that the existing in-tree fuzzer (
input-fuzzer) does not directly cover.input-parse-fuzzer-extratmux-oss-fuzz/harnesses/input-parse-fuzzer-extra.cinput_parse_buffer()cmd-parse-fuzzer-extratmux-oss-fuzz/harnesses/cmd-parse-fuzzer-extra.ccmd_parse_from_buffer()layout-parse-fuzzer-extratmux-oss-fuzz/harnesses/layout-parse-fuzzer-extra.clayout_parse()utf8-fuzzer-extratmux-oss-fuzz/harnesses/utf8-fuzzer-extra.cutf8_*familyformat-fuzzer-extratmux-oss-fuzz/harnesses/format-fuzzer-extra.cformat_expand()style-fuzzer-extratmux-oss-fuzz/harnesses/style-fuzzer-extra.cstyle_parse()The four existing in-tree fuzzers (
input-fuzzer,cmd-parse-fuzzer,format-fuzzer,style-fuzzer) are unchanged.What changed
projects/tmux/Dockerfile: pins the tmux clone to--branch master --depth 1so every CI run rebuilds against current upstream, including in-flight bug fixes. AddsCOPY tmux-oss-fuzz $SRC/tmux-oss-fuzz/to vendor the additional harness sources.projects/tmux/build.sh: after the existingmake checkbuilds the in-tree fuzzers, iterates over the six target names and compiles each extra harness against tmux's already-compiled object files. Includestmux.obecause tmux's--enable-fuzzingbuild path marksmain()as weak — libFuzzer'smainwins, andtmux.oprovides global helpers (clean_name,getversion,setblocking, …) referenced by the other objects.projects/tmux/project.yaml: trimmed of commented-out template lines; sanitizers and engines unchanged.projects/tmux/tmux-oss-fuzz/harnesses/: new directory containing the six harness sources.