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PR gas/29451 While out_debug_abbrev() properly skips such functions, out_debug_info() mistakenly didn't. It needs to calculate the high_pc expression ahead of time, in order to skip emitting any data for the function if the value is zero. The one case which would still leave a zero-size entry is when symbol_get_obj(symp)->size ends up evaluating to zero. I hope we can expect that to not be the case, otherwise we'd need to have a way to post-process .debug_info contents between resolving expressions and actually writing the data out to the file. Even then it wouldn't be entirely obvious in which way to alter the data.
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