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llvm-project/clang/test/PCH/variables.c

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Various minor fixes to PCH reading and writing, with general cleanup. Aside from a minor tweak to the PCH file format, no functionality change. llvm-svn: 68793
2009-04-11 01:25:41 +08:00
// RUN: clang-cc -emit-pch -triple=i686-apple-darwin9 -o %t %S/variables.h &&
// RUN: clang-cc -triple=i686-apple-darwin9 -include-pch %t -fsyntax-only -verify %s
Implementation of pre-compiled headers (PCH) based on lazy de-serialization of abstract syntax trees. PCH support serializes the contents of the abstract syntax tree (AST) to a bitstream. When the PCH file is read, declarations are serialized as-needed. For example, a declaration of a variable "x" will be deserialized only when its VarDecl can be found by a client, e.g., based on name lookup for "x" or traversing the entire contents of the owner of "x". This commit provides the framework for serialization and (lazy) deserialization, along with support for variable and typedef declarations (along with several kinds of types). More declarations/types, along with important auxiliary structures (source manager, preprocessor, etc.), will follow. llvm-svn: 68732
2009-04-10 06:27:44 +08:00
int *ip2 = &x;
float *fp = &ip; // expected-warning{{incompatible pointer types}}
PCH serialization/deserialization of the source manager. With this improvement, source locations read from the PCH file will properly resolve to the source files that were used to build the PCH file itself. Once we have the preprocessor state stored in the PCH file, source locations that refer to macro instantiations that occur in the PCH file should have the appropriate instantiation information. llvm-svn: 68758
2009-04-10 11:52:48 +08:00
// FIXME:variables.h expected-note{{previous}}
double z; // expected-error{{redefinition}}
//double VeryHappy; // FIXME: xpected-error{{redefinition}}
Implementation of pre-compiled headers (PCH) based on lazy de-serialization of abstract syntax trees. PCH support serializes the contents of the abstract syntax tree (AST) to a bitstream. When the PCH file is read, declarations are serialized as-needed. For example, a declaration of a variable "x" will be deserialized only when its VarDecl can be found by a client, e.g., based on name lookup for "x" or traversing the entire contents of the owner of "x". This commit provides the framework for serialization and (lazy) deserialization, along with support for variable and typedef declarations (along with several kinds of types). More declarations/types, along with important auxiliary structures (source manager, preprocessor, etc.), will follow. llvm-svn: 68732
2009-04-10 06:27:44 +08:00
do a dance with predefines, and finally enable reading of macros from PCH. This works now, except for limitations not being able to do things with identifiers. The basic example in the testcase works though. llvm-svn: 68832
2009-04-11 06:13:17 +08:00
int Q = A_MACRO_IN_THE_PCH;