[llvm-bugs] [Bug 25354] New: __restrict__ qualifier applied to ill-formed pointer to reference in function declaration causes ICE

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=25354

            Bug ID: 25354
           Summary: __restrict__ qualifier applied to ill-formed pointer
                    to reference in function declaration causes ICE
           Product: clang
           Version: 3.5
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: yaghmour.shafik at gmail.com
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

The following code see it live
http://melpon.org/wandbox/permlink/lgp392JgRKcS5fN3:

void func( double &*__restrict__ y){
}

causes an ICE and generate the following dump:

rog.cc:1:20: error: 'y' declared as a pointer to a reference of type 'double &'
void func( double &*__restrict__ y){
                   ^
0  clang           0x0000000001e05f52 llvm::sys::PrintStackTrace(_IO_FILE*) +
34
1  clang           0x0000000001e05afc
2  libpthread.so.0 0x00007fa9df01bcb0
3  clang           0x0000000000d36653
clang::Sema::BuildQualifiedType(clang::QualType, clang::SourceLocation,
clang::Qualifiers, clang::DeclSpec const*) + 35
4  clang           0x0000000000d3e40d
clang::Sema::BuildQualifiedType(clang::QualType, clang::SourceLocation,
unsigned int, clang::DeclSpec const*) + 173
5  clang           0x0000000000d42403
6  clang           0x0000000000d45209
clang::Sema::GetTypeForDeclarator(clang::Declarator&, clang::Scope*) + 345
7  clang           0x0000000000ab265b
clang::Sema::ActOnParamDeclarator(clang::Scope*, clang::Declarator&) + 139
8  clang           0x00000000009b3c9b
clang::Parser::ParseParameterDeclarationClause(clang::Declarator&,
clang::ParsedAttributes&,
llvm::SmallVectorImpl<clang::DeclaratorChunk::ParamInfo>&,
clang::SourceLocation&) + 1499
9  clang           0x00000000009b4c83
clang::Parser::ParseFunctionDeclarator(clang::Declarator&,
clang::ParsedAttributes&, clang::BalancedDelimiterTracker&, bool, bool) + 1747
10 clang           0x00000000009b5760
clang::Parser::ParseDirectDeclarator(clang::Declarator&) + 672
11 clang           0x00000000009a757d
clang::Parser::ParseDeclaratorInternal(clang::Declarator&, void
(clang::Parser::*)(clang::Declarator&)) + 173
12 clang           0x00000000009a80b2
clang::Parser::ParseDeclarator(clang::Declarator&) + 18
13 clang           0x00000000009b1b43
clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, unsigned int, bool,
clang::SourceLocation*, clang::Parser::ForRangeInit*) + 627
14 clang           0x000000000099a8e8
clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec&, clang::AccessSpecifier) + 280
15 clang           0x000000000099af66
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*, clang::AccessSpecifier) + 966
16 clang           0x000000000099e243
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*) + 259
17 clang           0x000000000099e9dc
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) + 428
18 clang           0x0000000000998330 clang::ParseAST(clang::Sema&, bool, bool)
+ 352
19 clang           0x000000000080d4af clang::CodeGenAction::ExecuteAction() +
31
20 clang           0x0000000000695876 clang::FrontendAction::Execute() + 118
21 clang           0x0000000000674830
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 256
22 clang           0x000000000065f7d1
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1921
23 clang           0x000000000065a028 cc1_main(char const**, char const**, char
const*, void*) + 984
24 clang           0x000000000064283f main + 8527
25 libc.so.6       0x00007fa9dde2776d __libc_start_main + 237
26 clang           0x0000000000658fc5
Stack dump:
0.    Program arguments: /usr/local/llvm-3.5/bin/clang -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free
-disable-llvm-verifier -main-file-name prog.cc -mrelocation-model static
-mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases
-munwind-tables -target-cpu x86-64 -target-linker-version 2.22
-dwarf-column-info -nostdinc++ -resource-dir
/usr/local/llvm-3.5/bin/../lib/clang/3.5.0 -I
/usr/local/libcxx-3.5/include/c++/v1 -internal-isystem /usr/local/include
-internal-isystem /usr/local/llvm-3.5/bin/../lib/clang/3.5.0/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include -Wall
-Wextra -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /home/jail
-ferror-limit 19 -fmessage-length 0 -mstackrealign -fobjc-runtime=gcc
-fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics
-fansi-escape-codes -o /tmp/prog-ce2f19.o -x c++ prog.cc 
1.    prog.cc:1:35: current parser token ')'
clang: error: unable to execute command: Segmentation fault
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.5.0 (tags/RELEASE_350/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to
http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and
associated run script.
clang: note: diagnostic msg: 
********************

I can not reproduce on version 3.6 or above.

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