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Summary: DelayedTemplateParsing is marked as BENIGN_LANGOPT, so we are allowed to use a delayed template in a non-delayed TU. (This is clangd's default configuration on windows: delayed-template-parsing is on for the preamble and forced off for the current file) However today clang fails to parse implicit instantiations in a non-dtp TU of templates defined in a dtp PCH file (and presumably module?). In this case the delayed parser is not registered, so the function is simply marked "delayed" again. We then hit an assert: end of TU template instantiation should not create more late-parsed templates Reviewers: rsmith Subscribers: ilya-biryukov, usaxena95, cfe-commits, kadircet Tags: #clang Differential Revision: https://reviews.llvm.org/D81474
15 lines
604 B
C++
15 lines
604 B
C++
// Check any combination of delayed-template-parsing between PCH and TU works.
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// RUN: %clang_cc1 %s -emit-pch -o %t.pch
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// RUN: %clang_cc1 -fdelayed-template-parsing %s -emit-pch -o %t.delayed.pch
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// RUN: %clang_cc1 -DMAIN_FILE -include-pch %t.pch %s
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// RUN: %clang_cc1 -DMAIN_FILE -fdelayed-template-parsing -include-pch %t.pch %s
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// RUN: %clang_cc1 -DMAIN_FILE -include-pch %t.delayed.pch %s
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// RUN: %clang_cc1 -DMAIN_FILE -fdelayed-template-parsing -include-pch %t.delayed.pch %s
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#ifndef MAIN_FILE
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template <typename T>
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T successor(T Value) { return Value + 1; }
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#else
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int x = successor(42);
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#endif
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