[clang][include-tree] Fix spurious dependencies #8264
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jansvoboda11
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Feb 22, 2024
This patch fixes an incorrect assumption that only spurious imports cause both `IncludeTreeBuilder::moduleImport()` and `IncludeTreeBuilder::exitedInclude()` to be called for the same directive. This can also happen for `#include` of a header that belongs to the module being implemented that previously got transitively loaded from a PCM. Instead of trying to guess that a submodule was a spurious import (by checking that it was not imported, is not from module file but its parent is from module file), we just mark it missing from umbrella header when we detect this. This allows us to stop putting the temporary `ModuleImport` onto the stack in one function and later popping and replacing it by `SpuriousImport` in another function. rdar://123253616 Cherry-pick of /pull/8264
jansvoboda11
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Feb 27, 2024
This patch fixes an incorrect assumption that only spurious imports cause both `IncludeTreeBuilder::moduleImport()` and `IncludeTreeBuilder::exitedInclude()` to be called for the same directive. This can also happen for `#include` of a header that belongs to the module being implemented that previously got transitively loaded from a PCM. Instead of trying to guess that a submodule was a spurious import (by checking that it was not imported, is not from module file but its parent is from module file), we just mark it missing from umbrella header when we detect this. This allows us to stop putting the temporary `ModuleImport` onto the stack in one function and later popping and replacing it by `SpuriousImport` in another function. rdar://123253616 Cherry-pick of /pull/8264
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This patch fixes an incorrect assumption that only spurious imports cause both
IncludeTreeBuilder::moduleImport()andIncludeTreeBuilder::exitedInclude()to be called for the same directive. This can also happen for#includeof a header that belongs to the module being implemented that previously got transitively loaded from a PCM.Instead of trying to guess that a submodule was a spurious import (by checking that it was not imported, is not from module file but its parent is from module file), we just mark it missing from umbrella header when we detect this. This allows us to stop putting the temporary
ModuleImportonto the stack in one function and later popping and replacing it bySpuriousImportin another function.rdar://123253616