ImportC: macro causes assertion failure #21246
Description
#define M(x) _Generic(x, (Output:
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ERROR: This is a compiler bug.
Please report it via https://github.com/dlang/dmd/issues
with, preferably, a reduced, reproducible example and the information below.
DustMite (https://github.com/CyberShadow/DustMite/wiki) can help with the reduction.
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DMD v2.111.0-137-g0cc3de3939
predefs D_ObjectiveC DigitalMars LittleEndian D_Version2 all D_SIMD Posix OSX darwin CppRuntime_LLVM CppRuntime_Clang D_InlineAsm_X86_64 X86_64 D_LP64 D_PIC assert D_PreConditions D_PostConditions D_Invariants D_ModuleInfo D_Exceptions D_TypeInfo D_HardFloat
binary generated/osx/release/64/dmd
version v2.111.0-137-g0cc3de3939
config generated/osx/release/64/dmd.conf
DFLAGS -Igenerated/osx/release/64/../../../../druntime/import -Igenerated/osx/release/64/../../../../../phobos -L-Lgenerated/osx/release/64/../../../../../phobos/generated/osx/release/64 -fPIC
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core.exception.AssertError@src/dmd/cparse.d(6318): Assertion failure
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??:? object.Throwable.TraceInfo core.runtime.defaultTraceHandler(void*) [0x100d7f182]Other examples:
#define M(a,b) _Generic(val, int(int) a#define X(str,val) _Generic(val, M(F) struct{int foo;}: 0)(__FILE__, __func__, __LINE__, str, val)I suspect this and #21244 are related as the logic in https://github.com/dlang/dmd/blob/master/compiler/src/dmd/cparse.d#L3024 can leave a null symbols in some cases.