glaze: fix broken build - #15936
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xingyaner is a new contributor to projects/glaze. The PR must be approved by known contributors before it can be merged. The past contributors are: hunsche, pauldreik |
DavidKorczynski
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Jul 31, 2026
DavidKorczynski
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could you land this change in the upstream repository?
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OK, I get it. |
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The glaze fuzzer build failed because of upstream commit 4cbddc3e, which added fuzzing/msgpack_roundtrip_string.cpp: this file serializes std::string via glz::write_msgpack, and clang-22 (snapshot cb2f0d0a) in the oss-fuzz base image segfaults when compiling that call with -std=c++23, hitting deep recursion and stack exhaustion in Sema's partial ordering of constrained partial specializations (a bare glz::write_msgpack(std::string, buffer) call reproduces the crash; it happens at all optimization levels from -O0 to -O3, cannot be worked around by increasing the stack, and is confirmed as a deterministic compiler bug). Only this file is affected; the other 18 fuzzers compile fine.
The fix patches fuzzing/ossfuzz.sh in build.sh to exclude msgpack_roundtrip_string.cpp from the oss-fuzz build, a targeted workaround for the clang-22 compiler bug that is fully self-contained in the oss-fuzz project config with no upstream changes, while the remaining msgpack fuzzers (reflection/roundtrip_int/roundtrip_floating) keep msgpack coverage with minimal loss.