hans added a comment. Here's a reproducer of what's happening in our case. It's using the preprocessor because that's the easiest, but the real problem for us is that the debug info is pointing to the wrong file (and that it's different depending on the symlinkedness of the include).
$ cat /tmp/foo.h #ifdef X #undef X int x; #endif #ifdef Y #undef Y int y; #endif $ ln -s /tmp/foo.h /tmp/bar.h $ cat /tmp/a.cc #define X #include "foo.h" #define Y #include "bar.h" $ build/bin/clang -E -o - /tmp/a.cc # 1 "/tmp/a.cc" # 1 "<built-in>" 1 # 1 "<built-in>" 3 # 437 "<built-in>" 3 # 1 "<command line>" 1 # 1 "<built-in>" 2 # 1 "/tmp/a.cc" 2 # 1 "/tmp/foo.h" 1 int x; # 3 "/tmp/a.cc" 2 # 1 "/tmp/foo.h" 1 int y; # 5 "/tmp/a.cc" 2 Note that the second `# 1 "/tmp/foo.h" 1` should really be `bar.h`. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D135220/new/ https://reviews.llvm.org/D135220 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
