>>>>> "Joe" == Joe Buck <joe.b...@synopsys.com> writes:
Joe> If, for definitions, the compiler keeps track of this detail, it Joe> would be possible to reliably print Joe> foo.h:11 error: redefinition of `a' (file was included more than once) Joe> if the printable line number is the same but the internal line number Joe> is different. You could certainly implement that in today's GCC. The "internal line number" comparison can be done by directly comparing source_locations. Then "printable line number" comparison can be done by expanding the locations and comparing the contents. Chris> Clang just prints the include stack information when anything Chris> in the include stack differs between two consecutive Chris> diagnostics. We could easily do that too. Tom
