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An instantiated templated function definition may not have a body due to parsing errors inside the templated function. When serializing, an assert is triggered inside `ASTRecordWriter::AddFunctionDefinition`. The instantiation may happen on an intermediate module. The test case was reduced from `mp-units`.
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
// RUN: rm -rf %t
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// RUN: split-file %s %t
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// RUN: cd %t
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// RUN: %clang_cc1 -std=c++23 mod1.cppm -emit-module-interface -o mod1.pcm -fallow-pcm-with-compiler-errors -verify
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// RUN: %clang_cc1 -std=c++23 mod2.cppm -emit-module-interface -o mod2.pcm -fmodule-file=mod1=mod1.pcm -verify -fallow-pcm-with-compiler-errors
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// RUN: %clang_cc1 -std=c++23 mod3.cppm -emit-module-interface -o mod3.pcm -fmodule-file=mod1=mod1.pcm -fmodule-file=mod2=mod2.pcm -verify -fallow-pcm-with-compiler-errors
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// RUN: %clang_cc1 -std=c++23 main.cpp -fmodule-file=mod1=mod1.pcm -fmodule-file=mod2=mod2.pcm -fmodule-file=mod3=mod3.pcm -verify -fallow-pcm-with-compiler-errors -ast-dump-all
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//--- mod1.cppm
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export module mod1;
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export template <unsigned N, unsigned M>
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class A {
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public:
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constexpr A(const char[], const char[]) {
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auto x = BrokenExpr; // expected-error {{use of undeclared identifier 'BrokenExpr'}}
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}
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};
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export template<A<1,1> NTTP>
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struct B {};
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template < unsigned N, unsigned M >
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A(const char (&)[N], const char (&)[M]) -> A< 1, 1 >;
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//--- mod2.cppm
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export module mod2;
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import mod1;
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struct C: B <A{"a", "b"}> { // expected-error {{non-type template argument is not a constant expression}}
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constexpr C(int a) { }
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};
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//--- mod3.cppm
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// expected-no-diagnostics
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export module mod3;
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export import mod2;
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//--- main.cpp
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// expected-no-diagnostics
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import mod3; // no crash
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