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llvm-project/clang/test/PCH/reinclude.cpp

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Fix an issue with writing to PCH another included PCH, introduced by the "using an AST on-disk hash table for name lookup" commit. When including a PCH and later re-emitting to another PCH, the name lookup tables of DeclContexts may be incomplete, since we now lazily deserialize the visible decls of a particular name. Fix the issue by iterating over the un-deserialized visible decls and completing the lookup tables of DeclContexts before writing them out. llvm-svn: 111698
2010-08-21 07:35:55 +08:00
// Test without PCH
// RUN: %clang_cc1 %s -include %S/reinclude1.h -include %S/reinclude2.h -fsyntax-only -verify
// RUN: %clang_cc1 -x c++-header %S/reinclude1.h -emit-pch -o %t1
// RUN: %clang_cc1 -x c++-header %S/reinclude2.h -include-pch %t1 -emit-pch -o %t2
// RUN: %clang_cc1 %s -include-pch %t2 -fsyntax-only -verify
Revamp the SourceManager to separate the representation of parsed source locations from source locations loaded from an AST/PCH file. Previously, loading an AST/PCH file involved carefully pre-allocating space at the beginning of the source manager for the source locations and FileIDs that correspond to the prefix, and then appending the source locations/FileIDs used for parsing the remaining translation unit. This design forced us into loading PCH files early, as a prefix, whic has become a rather significant limitation. This patch splits the SourceManager space into two parts: for source location "addresses", the lower values (growing upward) are used to describe parsed code, while upper values (growing downward) are used for source locations loaded from AST/PCH files. Similarly, positive FileIDs are used to describe parsed code while negative FileIDs are used to file/macro locations loaded from AST/PCH files. As a result, we can load PCH/AST files even during parsing, making various improvemnts in the future possible, e.g., teaching #include <foo.h> to look for and load <foo.h.gch> if it happens to be already available. This patch was originally written by Sebastian Redl, then brought forward to the modern age by Jonathan Turner, and finally polished/finished by me to be committed. llvm-svn: 135484
2011-07-20 00:10:42 +08:00
// RUN: %clang_cc1 -x c++-header %S/reinclude2.h -include-pch %t1 -emit-pch -o %t2
When we're writing macro definitions to an AST/PCH File, sort the macro definitions by macro name first. That way, we'll get a stable ordering in the AST/PCH file. llvm-svn: 125297
2011-02-11 02:20:09 +08:00
// RUN: %clang_cc1 %s -include-pch %t2 -fsyntax-only -verify
Fix an issue with writing to PCH another included PCH, introduced by the "using an AST on-disk hash table for name lookup" commit. When including a PCH and later re-emitting to another PCH, the name lookup tables of DeclContexts may be incomplete, since we now lazily deserialize the visible decls of a particular name. Fix the issue by iterating over the un-deserialized visible decls and completing the lookup tables of DeclContexts before writing them out. llvm-svn: 111698
2010-08-21 07:35:55 +08:00
int q2 = A::y;