[Bug pch/39029] New: #pragma once is not "exported" from the precompiled headers

[bohan dot gnu at retropaganda dot info]

When precompiling, #pragma once directives are handled correctly, but once we
try to use the pch, these directives are lost and the compiler will #include
again every real header file, even if it's already contained in the pch file.

The "easy" workaround is to fallback to include guards instead of #pragma once
(or use both).


-- 
           Summary: #pragma once is not "exported" from the precompiled
                    headers
           Product: gcc
           Version: 4.2.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: pch
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bohan dot gnu at retropaganda dot info
 GCC build triplet: x86_64-pc-linux-gnu
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39029