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77a38f6839
jGetLoadedDynamicLibrariesInfos normally checks with dyld to find the list of binaries loaded in the inferior, and getting the filepath, before trying to parse the Mach-O binary in inferior memory. This allows for debugserver to parse a Mach-O binary present in memory, but not yet registered with dyld. This patch also adds some simple sanity checks that we're reading a Mach-O header before we begin stepping through load commands, because we won't have the sanity check of consulting dyld for the list of loaded binaries before parsing. Also adds a testcase. Differential Revision: https://reviews.llvm.org/D128956 rdar://95737734