https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63366
Bug ID: 63366 Summary: C++ __complex is not equivalent to __complex double Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: thopre01 at gcc dot gnu.org Created attachment 33559 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33559&action=edit Testcase showing that __complex is not equivalent to __complex double in C++ In function grokdeclarator () in cp/decl.c there is the following comment: /* If we just have "complex", it is equivalent to "complex double", but if any modifiers at all are specified it is the complex form of TYPE. E.g, "complex short" is "complex short int". */ However in practice __complex is equivalent to __complex int. The attached testcase shows the problem and can be modified to try against __complex int. Best regards.