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Editorial Team
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Asked: 2026-05-14T16:38:24+00:00

What does #if _LFS64_LARGEFILE-0 mean to the C Preprocessor for g++? Is that a

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What does #if _LFS64_LARGEFILE-0 mean to the C Preprocessor for g++? Is that a minus zero or is that part of the symbol? If it is minus zero, how does that affect whether the #if is triggered?

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  1. Editorial Team

    That is a more robust version of:

    #if _LFS64_LARGEFILE

    i.e. that the code should be conditionally included if _LFS64_LARGEFILE has a true value.

    Adding the - 0, prevents you from getting a warning (#if with no expression) when _LFS64_LARGEFILE is not defined.

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