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#objdump: -dw #name: i386 RdRnd .*: +file format .* Disassembly of section .text: 0+ <foo>: [ ]*[a-f0-9]+: 66 0f c7 f3 rdrand %bx [ ]*[a-f0-9]+: 0f c7 f3 rdrand %ebx [ ]*[a-f0-9]+: 66 0f c7 f3 rdrand %bx [ ]*[a-f0-9]+: 0f c7 f3 rdrand %ebx #pass