With commit 9c9f52f on branch afd/fuzzer-transformation-construct-composite,

spirv-fuzz --seed=1 spirv_fuzz_shaders/binarysearch_bw-O.frag.spv -o temp.spv

leads to:

source/opt/instruction.h:502: const spvtools::opt::Operand& spvtools::opt::Instruction::GetOperand(uint32_t) const: Assertion `index < operands_.size() && "operand index out of bound"' failed.
bug.zip