<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang crashes on not finding a destructor during pch deserialization"
href="https://bugs.llvm.org/show_bug.cgi?id=47270">47270</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang crashes on not finding a destructor during pch deserialization
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>hokein@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>$ cat /tmp/t5.cpp
#ifndef HEADER
#define HEADER
class Base {
public:
~Base();
};
class Body : public Base {
~Body() {}
};
class Face : public Base {
public:
~Body() {};
};
#else
Face f;
#endif
$ ./bin/clang -cc1 -emit-pch -std=c++17 -fallow-pch-with-compiler-errors -o
/tmp/test.pch /tmp/t5.cpp
<<<
/tmp/t5.cpp:14:3: error: expected the class name after '~' to name the
enclosing class
~Body() {};
^
$ ./bin/clang -cc1 -include-pch /tmp/test.pch -ast-dump-all -std=c++17
-fno-validate-pch -o - /tmp/t5.cpp
<<<
clang: llvm-project/llvm/include/llvm/Support/Casting.h:104: static bool
llvm::isa_impl_cl<clang::CXXDestructorDecl, const clang::CXXMethodDecl
*>::doit(const From *) [To = clang::CXXDestructorDecl, From = const
clang::CXXMethodDecl *]: Assertion `Val && "isa<> used on a null pointer"'
failed.
PLEASE submit a bug report to <a href="https://bugs.llvm.org/">https://bugs.llvm.org/</a> and include the crash
backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: ./bin/clang -cc1 -include-pch /tmp/test.pch
-ast-dump-all -std=c++17 -fno-validate-pch -o - /tmp/t5.cpp
1. /tmp/t5.cpp:20:7: current parser token ';'
#0 0x00000000026b89ff llvm::sys::PrintStackTrace(llvm::raw_ostream&)
llvm-project/llvm/lib/Support/Unix/Signals.inc:563:13
#1 0x00000000026b6bd0 llvm::sys::RunSignalHandlers()
llvm-project/llvm/lib/Support/Signals.cpp:69:18
#2 0x00000000026b8e75 SignalHandler(int)
llvm-project/llvm/lib/Support/Unix/Signals.inc:395:3
#3 0x00007f741d52f110 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x14110)
#4 0x00007f741d009761 raise
/build/glibc-M65Gwz/glibc-2.30/signal/../sysdeps/unix/sysv/linux/raise.c:51:1
#5 0x00007f741cff355b abort /build/glibc-M65Gwz/glibc-2.30/stdlib/abort.c:81:7
#6 0x00007f741cff342f get_sysdep_segment_value
/build/glibc-M65Gwz/glibc-2.30/intl/loadmsgcat.c:509:8
#7 0x00007f741cff342f _nl_load_domain
/build/glibc-M65Gwz/glibc-2.30/intl/loadmsgcat.c:970:34
#8 0x00007f741d002092 (/lib/x86_64-linux-gnu/libc.so.6+0x34092)
#9 0x00000000043b9816 llvm::cast_retty<clang::CXXDestructorDecl,
clang::CXXMethodDecl*>::ret_type llvm::cast<clang::CXXDestructorDecl,
clang::CXXMethodDecl>(clang::CXXMethodDecl*)
llvm-project/llvm/include/llvm/Support/Casting.h:269:3
#10 0x00000000043b9816 clang::Sema::LookupDestructor(clang::CXXRecordDecl*)
llvm-project/clang/lib/Sema/SemaLookup.cpp:3308:10
#11 0x000000000413f476 clang::Sema::FinalizeVarWithDestructor(clang::VarDecl*,
clang::RecordType const*) llvm-project/clang/lib/Sema/SemaDeclCXX.cpp:15105:35
#12 0x000000000407f302
clang::Sema::CheckCompleteVariableDeclaration(clang::VarDecl*)
llvm-project/clang/lib/Sema/SemaDecl.cpp:0:5
#13 0x000000000405917e clang::Sema::ActOnUninitializedDecl(clang::Decl*)
llvm-project/clang/lib/Sema/SemaDecl.cpp:0:5
#14 0x0000000003e60317
clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&,
clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*)
llvm-project/clang/lib/Parse/ParseDecl.cpp:0:13
#15 0x0000000003e5e940 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&,
clang::DeclaratorContext, clang::SourceLocation*, clang::Parser::ForRangeInit*)
llvm-project/clang/lib/Parse/ParseDecl.cpp:1986:21
#16 0x0000000003e43a0d
clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec&, clang::AccessSpecifier)
llvm-project/clang/lib/Parse/Parser.cpp:1100:10
#17 0x0000000003e433bc
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*, clang::AccessSpecifier)
llvm-project/clang/lib/Parse/Parser.cpp:1116:12
#18 0x0000000003e422c4
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*) llvm-project/clang/lib/Parse/Parser.cpp:936:12
#19 0x0000000003e40451
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, bool)
llvm-project/clang/lib/Parse/Parser.cpp:684:10
#20 0x0000000003e3fcf7
clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&)
llvm-project/clang/lib/Parse/Parser.cpp:556:26
#21 0x0000000003e3b9e1 clang::ParseAST(clang::Sema&, bool, bool)
llvm-project/clang/lib/Parse/ParseAST.cpp:0:25
#22 0x0000000002e10a94 clang::FrontendAction::Execute()
llvm-project/clang/lib/Frontend/FrontendAction.cpp:954:10
#23 0x0000000002dc2143 llvm::Error::getPtr() const
llvm-project/llvm/include/llvm/Support/Error.h:274:42
#24 0x0000000002dc2143 llvm::Error::operator bool()
llvm-project/llvm/include/llvm/Support/Error.h:236:16
#25 0x0000000002dc2143
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
llvm-project/clang/lib/Frontend/CompilerInstance.cpp:984:23
#26 0x0000000002eba7d8
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:278:25
#27 0x00000000009e032a cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) llvm-project/clang/tools/driver/cc1_main.cpp:240:15
#28 0x00000000009de4f9 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
llvm-project/clang/tools/driver/driver.cpp:330:12
#29 0x00000000009de125 main llvm-project/clang/tools/driver/driver.cpp:407:12
#30 0x00007f741cff4e0b __libc_start_main
/build/glibc-M65Gwz/glibc-2.30/csu/../csu/libc-start.c:342:3
#31 0x00000000009db2ea _start (./bin/clang+0x9db2ea)
[1] 1638648 abort ./bin/clang -cc1 -include-pch /tmp/test.pch
-ast-dump-all -std=c++17 -o -</pre>
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