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Introduce an opt-in warning when a module is being implicitly built 

from sources.

llvm-svn: 140746
This commit is contained in:
Douglas Gregor 2011-09-29 00:52:27 +00:00
parent d299dccf91
commit 44e688d46a
4 changed files with 10 additions and 0 deletions
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2
clang/include/clang/Basic/DiagnosticCommonKinds.td
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@ -63,6 +63,8 @@ def err_module_not_found : Error<"module '%0' not found">, DefaultFatal;
def err_module_not_built : Error<"could not build module '%0'">, DefaultFatal;
def err_module_cycle : Error<"cyclic dependency in module '%0': %1">,
DefaultFatal;
def warn_module_build : Warning<"building module '%0' from source">,
InGroup<ModuleBuild>, DefaultIgnore;
// Sema && Lex
def ext_longlong : Extension<

1
clang/include/clang/Basic/DiagnosticGroups.td
View File

@ -85,6 +85,7 @@ def : DiagGroup<"newline-eof">;
def LongLong : DiagGroup<"long-long">;
def MismatchedTags : DiagGroup<"mismatched-tags">;
def MissingFieldInitializers : DiagGroup<"missing-field-initializers">;
def ModuleBuild : DiagGroup<"module-build">;
def NullDereference : DiagGroup<"null-dereference">;
def InitializerOverrides : DiagGroup<"initializer-overrides">;
def NonNull : DiagGroup<"nonnull">;

2
clang/lib/Frontend/CompilerInstance.cpp
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@ -752,6 +752,8 @@ ModuleKey CompilerInstance::loadModule(SourceLocation ImportLoc,
return 0;
}
getDiagnostics().Report(ModuleNameLoc, diag::warn_module_build)
<< ModuleName.getName();
BuildingModule = true;
compileModule(*this, ModuleName.getName(), ModuleFileName, UmbrellaHeader);
ModuleFile = PP->getHeaderSearchInfo().lookupModule(ModuleName.getName());

5
clang/test/Modules/on-demand-build-warnings.m Normal file
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@ -0,0 +1,5 @@
// RUN: rm -rf %t
// RUN: %clang_cc1 -fno-objc-infer-related-result-type -Wmodule-build -fmodule-cache-path %t -F %S/Inputs -DFOO -verify %s
__import_module__ Module; // expected-warning{{building module 'Module' from source}}