Any comments on this? https://gcc.gnu.org/ml/gcc-patches/2015-07/msg02414.html
I don't see any other way to fix these PRs, but I don't know how to keep the pragmas from being deleted by the preprocessor. Cheers, Manuel. On 29 July 2015 at 00:46, Manuel López-Ibáñez <lopeziba...@gmail.com> wrote: > Currently, #pragma GCC diagnostic is handled entirely by the FE. This > has several drawbacks: > > * PR c++/53431 - C++ preprocessor ignores #pragma GCC diagnostic: The > C++ parser lexes (and preprocesses) before handling the pragmas. > > * PR 53920 - "gcc -E" does not honor #pragma GCC diagnostic ignored > "-Wunused-macro": Because -E does not invoke the FE code that parses > the FE pragmas. > > * PR 64698 - preprocessor ignores #pragma GCC diagnostic when using > -save-temps. Same issue as above. > > The following patch moves the handling of #pragma GCC diagnostic to > libcpp but keeps the interface with the diagnostic machinery in the FE > by using a call-back function. > > One serious problem with this approach is that the preprocessor will > delete the pragmas from the preprocessed output, thus '-E', > '-save-temps' will not contain the pragmas and compiling the > preprocessed file will trigger the warnings that they were meant to > suppress. Any ideas how to prevent libcpp from deleting the #pragmas? > > No Changelog since this is not a request for approval, but comments are > welcome. > > Cheers, > > Manuel.
