vabridgers wrote:
This change has caused a regression in one of our systems integration tests
that test static analysis for the bstring lib project
(https://github.com/websnarf/bstrlib) with cross translation unit analysis
enabled. Unfortunately I do not have a simple reproducer that stands alone just
using clang, but I do have a reproducer that uses CodeChecker and can paste in
the crash signature here. Please consider reverting the change until a proper
fix can be made and this issue is addressed.
bstrwrap.cpp
1 #include "bstrwrap.h"
2 #include <iostream>
3
4 Bstrlib::CBString::CBString () {
5 }
bstrwrap.h
1 #include <string>
2
3 namespace Bstrlib {
4 struct CBString {
5 CBString ();
6 };
7
8 extern std::istream& getline (std::istream& sin, CBString& b, char
terminator='\n');
9
10 } // namespace Bstrlib
test.cpp
1 #include "bstrwrap.h"
2
3 int test0 (void) {
4 Bstrlib::CBString c0;
5 return 0;
6 }
Using CodeChecker from https://github.com/Ericsson/codechecker, Log the build
``CodeChecker log -b "g++ -c test.cpp bstrwrap.cpp" -o comp.json``
Repro step
``env PATH=<UpstreamCompilerPath>:$PATH CC_ANALYZERS_FROM_PATH=1 CodeChecker
analyze comp.json --clean --ctu -o report --analyzers clangsa``
The crash signature, appears to be crashing in AST Import.
1. <eof> parser at end of file
2. While analyzing stack:
#0 Calling test0()
3. test.cpp:4:21: Error evaluating statement
4. test.cpp:4:21: Error evaluating statement
#0 0x0000000003cb7248 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int)
(clang-19+0x3cb7248)
#1 0x0000000003cb4f2c llvm::sys::CleanupOnSignal(unsigned long)
(clang-19+0x3cb4f2c)
#2 0x0000000003bfd308 CrashRecoverySignalHandler(int)
CrashRecoveryContext.cpp:0:0
#3 0x00007f9e5d53d630 __restore_rt sigaction.c:0:0
#4 0x00007f9e5af39387 raise (/lib64/libc.so.6+0x36387)
#5 0x00007f9e5af3aa78 abort (/lib64/libc.so.6+0x37a78)
#6 0x00007f9e5af321a6 __assert_fail_base (/lib64/libc.so.6+0x2f1a6)
#7 0x00007f9e5af32252 (/lib64/libc.so.6+0x2f252)
#8 0x00000000072ada26
clang::FunctionDecl::setDescribedFunctionTemplate(clang::FunctionTemplateDecl*)
(clang-19+0x72ada26)
#9 0x0000000007190a56
clang::ASTNodeImporter::VisitFunctionTemplateDecl(clang::FunctionTemplateDecl*)
(clang-19+0x7190a56)
#10 0x000000000716e998 clang::declvisitor::Base<std::add_pointer,
clang::ASTNodeImporter, llvm::Expected<clang::Decl*>>::Visit(clang::Decl*)
crtstuff.c:0:0
#11 0x000000000716eedb clang::ASTImporter::Import(clang::Decl*)
(clang-19+0x716eedb)
#12 0x0000000007172108 std::conditional<is_base_of_v<clang::Type, clang::Decl>,
llvm::Expected<clang::Decl const*>, llvm::Expected<clang::Decl*>>::type
clang::ASTNodeImporter::import<clang::Decl>(clang::Decl*) crtstuff.c:0:0
#13 0x000000000717d072
clang::ASTNodeImporter::ImportDeclContext(clang::DeclContext*, bool)
(clang-19+0x717d072)
#14 0x000000000718677b
clang::ASTNodeImporter::VisitNamespaceDecl(clang::NamespaceDecl*)
(clang-19+0x718677b)
#15 0x000000000716ea38 clang::declvisitor::Base<std::add_pointer,
clang::ASTNodeImporter, llvm::Expected<clang::Decl*>>::Visit(clang::Decl*)
crtstuff.c:0:0
#16 0x000000000716eedb clang::ASTImporter::Import(clang::Decl*)
(clang-19+0x716eedb)
#17 0x0000000007175146 clang::ASTImporter::Import(clang::NestedNameSpecifier*)
(clang-19+0x7175146)
#18 0x000000000717a0bb
clang::ASTNodeImporter::VisitElaboratedType(clang::ElaboratedType const*)
(clang-19+0x717a0bb)
#19 0x0000000007174945 clang::TypeVisitor<clang::ASTNodeImporter,
llvm::Expected<clang::QualType>>::Visit(clang::Type const*) crtstuff.c:0:0
#20 0x0000000007174c07 clang::ASTImporter::Import(clang::Type const*)
(clang-19+0x7174c07)
#21 0x0000000007175bd7 clang::ASTImporter::Import(clang::QualType)
(clang-19+0x7175bd7)
#22 0x0000000007177e20
clang::ASTNodeImporter::VisitLValueReferenceType(clang::LValueReferenceType
const*) (clang-19+0x7177e20)
https://github.com/llvm/llvm-project/pull/87144
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