[patch] Fix GC issue triggered by arithmetic overflow checking

Eric Botcazou ebotcazou@adacore.com
Thu Oct 13 10:59:00 GMT 2016

> I guess it depends on whether temp$8 and temp$low overlap or not.

I don't think so, the code is identical so that would be a more serious bug:

struct cpp_num
  cpp_num_part high;
  cpp_num_part low;
  bool unsignedp;
  bool overflow;

I think it's just dwarf2out_var_location being sensitive to the ordering.

Eric Botcazou

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