tra added a comment.
It appears that this change may result in clang crashing (e.g. it broke CUDA
compilation:
https://lab.llvm.org/buildbot/#/builders/55/builds/35047/steps/3/logs/stdio).
Reproducer:
class {
typedef __complex__ a;
operator=(double b){c *= b} a c
$bin/clang++ -cc1 -triple x86_64-unknown-linux-gnu -fsyntax-only -std=c++14
-disable-llvm-passes -x c++ reproducer.cc
reproducer.cc:2:11: warning: plain '_Complex' requires a type specifier;
assuming '_Complex double'
typedef __complex__ a;
^
double
reproducer.cc:3:3: error: a type specifier is required for all declarations
operator=(double b){c *= b} a c
^
reproducer.cc:3:34: error: expected ';' at end of declaration list
operator=(double b){c *= b} a c
^
;
reproducer.cc:4:1: error: expected '}'
^
reproducer.cc:1:7: note: to match this '{'
class {
^
clang++: work/llvm/repo/llvm/include/llvm/Support/Casting.h:566:
decltype(auto) llvm::cast(const From &) [To = clang::BuiltinType, From =
clang::QualType]: Assertion `isa<To>(Val) && "cast<Ty>() argument of
incompatible type!"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/
and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: bin/clang++ -cc1 -triple x86_64-unknown-linux-gnu
-fsyntax-only -std=c++14 -disable-llvm-passes -x c++ reproducer.cc
1. reproducer.cc:3:29: current parser token '}'
2. reproducer.cc:1:1: parsing struct/union/class body '(anonymous)'
3. reproducer.cc:3:22: parsing function body '(anonymous
class)::operator='
4. reproducer.cc:3:22: in compound statement ('{}')
#0 0x000055ad5d7fe49a llvm::sys::PrintStackTrace(llvm::raw_ostream&, int)
work/llvm/repo/llvm/lib/Support/Unix/Signals.inc:569:11
#1 0x000055ad5d7fe64b PrintStackTraceSignalHandler(void*)
work/llvm/repo/llvm/lib/Support/Unix/Signals.inc:636:1
#2 0x000055ad5d7fcc96 llvm::sys::RunSignalHandlers()
work/llvm/repo/llvm/lib/Support/Signals.cpp:103:5
#3 0x000055ad5d7fed75 SignalHandler(int)
work/llvm/repo/llvm/lib/Support/Unix/Signals.inc:407:1
#4 0x00007f4b4e083200 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12200)
#5 0x00007f4b4daf28c1 raise ./signal/../sysdeps/unix/sysv/linux/raise.c:50:1
#6 0x00007f4b4dadc546 abort ./stdlib/abort.c:81:7
#7 0x00007f4b4dadc42f get_sysdep_segment_value ./intl/loadmsgcat.c:509:8
#8 0x00007f4b4dadc42f _nl_load_domain ./intl/loadmsgcat.c:970:34
#9 0x00007f4b4daeb242 (/lib/x86_64-linux-gnu/libc.so.6+0x31242)
#10 0x000055ad5e2f39e8 decltype(auto) llvm::cast<clang::BuiltinType,
clang::QualType>(clang::QualType const&)
work/llvm/repo/llvm/include/llvm/Support/Casting.h:567:43
#11 0x000055ad5e2f3929 clang::BuiltinType const*
clang::Type::castAs<clang::BuiltinType>() const
work/llvm/build/debug/tools/clang/include/clang/AST/TypeNodes.inc:86:1
#12 0x000055ad62cfe279
clang::ASTContext::getFloatTypeSemantics(clang::QualType) const
work/llvm/repo/clang/lib/AST/ASTContext.cpp:1707:14
#13 0x000055ad61e8ad61 unsupportedTypeConversion(clang::Sema const&,
clang::QualType, clang::QualType)
work/llvm/repo/clang/lib/Sema/SemaExpr.cpp:1256:29
#14 0x000055ad61eb3961
clang::Sema::CheckAssignmentConstraints(clang::QualType,
clang::ActionResult<clang::Expr*, true>&, clang::CastKind&, bool)
work/llvm/repo/clang/lib/Sema/SemaExpr.cpp:9619:7
#15 0x000055ad61eb30c5
clang::Sema::CheckAssignmentConstraints(clang::SourceLocation, clang::QualType,
clang::QualType) work/llvm/repo/clang/lib/Sema/SemaExpr.cpp:9465:3
#16 0x000055ad61ec565f clang::Sema::CheckAssignmentOperands(clang::Expr*,
clang::ActionResult<clang::Expr*, true>&, clang::SourceLocation,
clang::QualType, clang::BinaryOperatorKind)
work/llvm/repo/clang/lib/Sema/SemaExpr.cpp:13919:12
#17 0x000055ad61ea1903 clang::Sema::CreateBuiltinBinOp(clang::SourceLocation,
clang::BinaryOperatorKind, clang::Expr*, clang::Expr*)
work/llvm/repo/clang/lib/Sema/SemaExpr.cpp:14988:11
#18 0x000055ad61ecaf02 clang::Sema::BuildBinOp(clang::Scope*,
clang::SourceLocation, clang::BinaryOperatorKind, clang::Expr*, clang::Expr*)
work/llvm/repo/clang/lib/Sema/SemaExpr.cpp:15511:10
#19 0x000055ad61e8a180 clang::Sema::ActOnBinOp(clang::Scope*,
clang::SourceLocation, clang::tok::TokenKind, clang::Expr*, clang::Expr*)
work/llvm/repo/clang/lib/Sema/SemaExpr.cpp:15323:10
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D111509/new/
https://reviews.llvm.org/D111509
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