<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/117960>117960</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Crashes When Compiling Template Enum with Function and Static Assertions
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          iamanonymouscs
      </td>
    </tr>
</table>

<pre>
    This crash can be observed in both LLVM 18 and LLVM trunk versions.[https://godbolt.org/z/v57annjGn](https://godbolt.org/z/v57annjGn)
# Command
`clang++ bug.cpp`

# Code
```cpp
template < typename T > struct A
{
  enum E : T;
  E h ();
};

A < int > a;
A < int >::E b = a.h () + 1;

int i = b.e ();
static_assert (i == 1, "i");
A::E e = b.e ();
static_assert (e, "");

A::E e = A::h () + 1;

template < typename T > enum A < T >::E : T { e };  

template < typename T > typename A < T >::E A < T >::h ()
{
  return e;  
}
```
# Version
clang-18
```sh
Ubuntu clang version 18.1.8 (++20240731025011+3b5b5c1ec4a3-1~exp1~20240731145104.143)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
```
# Error Output
```sh
Stack dump:
0.      Program arguments: /usr/lib/llvm-18/bin/clang -cc1 -triple x86_64-pc-linux-gnu -emit-obj -mrelax-all -dumpdir a- -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name bug.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/home/bugs -fcoverage-compilation-dir=/home/bugs -resource-dir /usr/lib/llvm-18/lib/clang/18 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../include/x86_64-linux-gnu/c++/13 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13/backward -internal-isystem /usr/lib/llvm-18/lib/clang/18/include -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdeprecated-macro -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcxx-exceptions -fexceptions -fcolor-diagnostics -dwarf-debug-flags "/usr/lib/llvm-18/bin/clang --driver-mode=g++ bug.cpp -dumpdir a-" -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/bug-2ab286.o -x c++ bug.cpp
1.      bug.cpp:8:28: current parser token ';'
 #0 0x00007fb2523ecb46 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0xd93b46)
 #1 0x00007fb2523eaaf0 llvm::sys::RunSignalHandlers() (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0xd91af0)
 #2 0x00007fb2523ed210 (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0xd94210)
 #3 0x00007fb25123c090 (/lib/x86_64-linux-gnu/libc.so.6+0x43090)
 #4 0x00007fb2598f2639 clang::ASTContext::getIntegerRank(clang::Type const*) const (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0xc9b639)
 #5 0x00007fb2598f30c5 clang::ASTContext::getIntegerTypeOrder(clang::QualType, clang::QualType) const (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0xc9c0c5)
 #6 0x00007fb25a2fcdf3 (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0x16a5df3)
 #7 0x00007fb25a2fc132 clang::Sema::UsualArithmeticConversions(clang::ActionResult<clang::Expr*, true>&, clang::ActionResult<clang::Expr*, true>&, clang::SourceLocation, clang::Sema::ArithConvKind) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0x16a5132)
 #8 0x00007fb25a32095b clang::Sema::CheckAdditionOperands(clang::ActionResult<clang::Expr*, true>&, clang::ActionResult<clang::Expr*, true>&, clang::SourceLocation, clang::BinaryOperatorKind, clang::QualType*) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0x16c995b)
 #9 0x00007fb25a30de92 clang::Sema::CreateBuiltinBinOp(clang::SourceLocation, clang::BinaryOperatorKind, clang::Expr*, clang::Expr*) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0x16b6e92)
#10 0x00007fb25a5f3d74 clang::Sema::CreateOverloadedBinOp(clang::SourceLocation, clang::BinaryOperatorKind, clang::UnresolvedSetImpl const&, clang::Expr*, clang::Expr*, bool, bool, clang::FunctionDecl*) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0x199cd74)
#11 0x00007fb25a32cf2c (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0x16d5f2c)
#12 0x00007fb25a32cb10 clang::Sema::BuildBinOp(clang::Scope*, clang::SourceLocation, clang::BinaryOperatorKind, clang::Expr*, clang::Expr*) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0x16d5b10)
#13 0x00007fb25a2fba9f clang::Sema::ActOnBinOp(clang::Scope*, clang::SourceLocation, clang::tok::TokenKind, clang::Expr*, clang::Expr*) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0x16a4a9f)
#14 0x00007fb2598250a4 clang::Parser::ParseRHSOfBinaryExpression(clang::ActionResult<clang::Expr*, true>, clang::prec::Level) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0xbce0a4)
#15 0x00007fb259823e8f clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0xbcce8f)
#16 0x00007fb2597f44fe clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0xb9d4fe)
#17 0x00007fb2597f1884 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0xb9a884)
#18 0x00007fb2598a6e7a clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0xc4fe7a)
#19 0x00007fb2598a6843 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0xc4f843)
#20 0x00007fb2598a5aa6 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0xc4eaa6)
#21 0x00007fb2598a3eda clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0xc4ceda)
#22 0x00007fb2597dcc7e clang::ParseAST(clang::Sema&, bool, bool) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0xb85c7e)
#23 0x00007fb25b614415 clang::FrontendAction::Execute() (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0x29bd415)
#24 0x00007fb25b58e674 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0x2937674)
#25 0x00007fb25b68e69e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/lib/llvm-18/bin/../lib/libclang-cpp.so.18.1+0x2a3769e)
#26 0x000055ecd5475c62 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/lib/llvm-18/bin/clang+0x12c62)
#27 0x000055ecd5473095 (/usr/lib/llvm-18/bin/clang+0x10095)
#28 0x000055ecd5472256 clang_main(int, char**, llvm::ToolContext const&) (/usr/lib/llvm-18/bin/clang+0xf256)
#29 0x000055ecd547faf6 main (/usr/lib/llvm-18/bin/clang+0x1caf6)
#30 0x00007fb25121d083 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24083)
#31 0x000055ecd546fb0e _start (/usr/lib/llvm-18/bin/clang+0xcb0e)
```
clang-truck
```sh
Stack dump:
0.      Program arguments: /opt/compiler-explorer/clang-trunk/bin/clang++ -gdwarf-4 -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics -std=c++20 <source>
1.      <source>:8:28: current parser token ';'
#0 0x00000000039bee18 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x39bee18)
#1 0x00000000039bcf64 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x39bcf64)
#2 0x000000000390d898 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x0000791d8a842520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x0000000007025f38 clang::ASTContext::getTypeInfoImpl(clang::Type const*) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x7025f38)
#5 0x00007ffcdfa753a0 
```
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJzUWl9zo7iy_zTkRSUXiP8PeSB2vJu6u5W5k-yex5SQGqwNSFwhPM59OJ_9lsA24DiZZNZ3tk5q1wOiaf36p-5WC4m2rSglwLUT3jjh6op2ZqP0taA1lUq-1KprWXuVK_5y_bgRLWKathvEqEQ5IJW3oLfAkZAoV2aDfvvtz9-RlyAq-XBtdCef0RZ0K5RsF054szGmaR0_c8jaIetS8VxVZqF06ZD1_zpkvQ1jKuVfv0gnXDkk-bg4SR03c4iPlqquqeT2LnJZRWXpkBuH3KC8KxesaZzItc8OwhwGyeE_-9zNDNRNRQ0gx18i89KApDWgR-T4t6g1umMG9QriG8fNEALZ1egWOX6GHh1_aLtFG-SQxMLqW5x4tb9ws6zXK6TpFdKhfdZoLfazW5Qjx18hujjoQtYO76jISoteJF_ArLvWUCPYE21b0MY-6cWspOeQJXIIEQ4hR_Hs0CF8TBvslUx1vFazv30D_Hsk94wOjDxO-egpRk58Y3voGUXo-9qOt2c0vmo6Dts4vhpMpyWCY3fxauoze1f6c_Byx816p8NeMhVqN46b_ZF30nSof36ICuQlC2-RDL1aPyUuCdzY91wSup7nkBs_D_OQecAC6mPv37BrvH8fhLwg9Nxg4QX-APmR6hKMpWmXRE9RgBuGKyG7HS5lZ59vNFCOasWhslKNasXOcbM72RpaVcBXQtt2h6y7VjtknQt5xtZbrZVG951pOvPKygdD2TPiXd1YRt3MXaD-74tWpaY1orrsapCmnXVUidz-VtvaMjd0TNYDVZgxD2GjRVPBOcMQhloYrPK_EK41VHSHaVUhbDFwoRHFCHPR0rwCXGgAhFkFVGPaGpxDoTTgnLJnkHyU65FsQYtCgO6bGdUcb2nVAbbe1CJcUyFxIaqh4ZBgBgyKUSOUxD3VqBEM4UYwXMEWKkSGG9HiRgDCdaFpDbhRQhrQjr_q0Rc1NRsMWkuFcFE0mClpNGXG8VdKIlxIhbXqJBeyxFYW4ZopOSQopTGtBG0tzKKT34Tk2FjDWsdfEYRN7yiYNZ0lFEcBwqaT0DeUIEFbwBzyrixB20dClo6_KnmOcNG3Y6bqRlSDldy6zcoh642qwY5eV9qOmdqCpiV8QFZDqzrNwD5-2yuG-31WX3sJwj1lklZYtC-tgXruumS9WBxfKxlzyHrvP2NUkLXnHwRPfoRkVcctSDYEZy_80zo989Y_gmPaqdVN2fM3qvl7_X9v4Eb972pRjFYfE72AwWdkX3cMO3vBXgN4e9jef_vzXfQR2Ghg1ADHNWXaJgiwORlXohYGeSnCRSk7hvezjOOvggVZeAgX7bNosOIasw2wZywkLuvCxupuh2HHoLFBaoN3dsNUpTTmgpZStUawFmH-jepiyBG4qGjZDhXBR_I55lpsQffJ0WaVeYU2TdwOIQgXlHPdihLh1dPTL8vl06_Zn7dPq39lX9fkabm-e8oefnf8lYewsmSZuhnSCiY0J0m0UAjvEDspA93M209MhxY_Sxw_I_YHsU5rkAY1VLegkVHPIJFDYlu-kNiWBQ7xXeTuXNd14yInIfGB5UGErMlDKdG-tMPFFy2k6afFR00ZOCQZhTT99qRao4HWDolsXSWkGaqlMW7OeGYlcltiYy9ZtGphiwiH3Lg7nvp5EA3FgIXonUCktHDPQfzayQdRSlr9SiWvQLfHmu3HUHi0cEcU5AQFJ577w6oD4k1U-1PVHvGZm35ENbNKo15j4LvpRGEwVZgmBYn8dCjZBqayh8elkgZ2ZrgvwdxJAyXor1Q-OySZyD6-NID6OdkhmaWzv97Dey9OJnnMgu0LStY0MyZYmkd-OgIPT4D7Lgs_BtzCvNcc9Bz9f3e0so-sU55tvrQ9zGXhaE80tYeSgvHCv1BXXkRDXvhjX_FpX55PpjY_QE2Hqz_ajlaZFmZTgxFsqeRheTsnL2M2dX6FtquM4y8nT253je7dYWnXx2BXHkPgX-zth76S-m1fgp4-PJrSW2EN-C8h-RjslyDX88lIbjIj1yduGubnES3tlJRxLizu-wY0lfw_hdcbIal-6UEbpQdK34ib7JJkszQN85HsdE62yyF9w5OXGqiBm05URsgbIe-bOdN_z9oJn-daL2d_HkFKjp9_vNmcTMPC53Hwnv33W9CVohz4xSn4Q9pFTbUF_gDmrm6qw1Rw6lff4WqJcqWq6b8TqXUne59eAasuy2yaMh4HI7PeSRizgrCLjSIPC8LGvshpX7nnnh9F679nh46pfahdMIR_mlPzMD8UOZYO_2R6ymlavJHTmbk_G8w_QIdRz_syxla__yQdNKBpMdJxUqKR0KWzGP_SF-2T66-_PtwXw-hadND2a6K_Ma_MDLZLseHqN9hCdTnDcwYunUTgSYVHfEiKd-3O-s_7NUjzltnTV-zktKStXakYuKQVDJLJ6M3qujQugqCAd62wqY3q3kOzwoA-3CudSZ4Zo0XeGTipE0ah1_n2VQ_8cf_5-E4W6q0sPX1rrWy1X8KdFOaivp6nPChgJCs-IctLkvdd3dr9i1Zd83qchSzt04cG2GvrRr4Oi4Qz1s_Y_l51dJoXfhJ_NEkmIZPMQ4ZGENPv8nevx1m1uNt_ljkTN-_S8TGJd8ckYwza1j7rv0JfjiUWFBDTkaX0lKUk8D8akjOyhBTmfI65NFen3vX_yVVy2F5xiE_cE65CSqN3ubrdDQ404ezn8HM5BoDSaGTAO2HAB_5-TD2qpp8Zhxp1avp9Q_-ngy9Gz6fcYxL7CsX5ldix4Pld8a6Cu7pR-jBxRZc0nQEfA4WQeTrmjMWv567s4fGk-LJoBxvmlfzFsl4SsnicNcisXswjLwi82aegtbY5XvKh6DmUOcA6S19yOVwkzXnghSOwWeWWhwlE89XZst8nAt3vR0oGM2h7tDNqTyy55NiT1I-jyQKIhHNWE4hSmBe-PczRhu1xLkzes_GSsUqoH0fpxBUO1VYYAuNhEIcsIogx76mmVunkS3SmNX3pA27JNlSP3y33Be-sjSzRVgn-YeyHgxjuziMsGtfrJD7B57tp-Dl9rptOPCw50UdIuE_PB4v77-uDPT383piRhkelqn0JNKkEP2djQcJJvkxPIBW0iJAF8zk7GS1GpfO9B4943E189PRkHeOpNVSbp0kPH_wSTgI3GWe6497BHndU5C6gQfmnkLPcPTjk5BzB4L9Gd-z5A0cIHDd96_yAaoztbh9VGHZNpbStANbHLuTzK1gOuUG4HPawAoTL_d4RbRqrsj_ZsGgRrq1ZCONdEmHa1rh9kYbuHH8lpIFq2ITfgs5VC_Y5wg8I45IxbJSq2MZ6XL_X_TZIK9xK2rQbZc5vtNk--oNX8-bWcMdfscOpEeT4y2EL3Qasm3mWs1nbp_a3Jttb_Z-f5gBecuHtrR8eu96x9pjGOvYEMCui4BzgZQVUds39fsvLIUkn-3NwHFXK9nAxeBbBmAjm8FyepAla2oH9Cv1JiZfZFtwhVaVzmX1u2u9Yuv3_Q7weMkLq8YQmAQnJZ3fC7CtHuMEUbuySsPCT7-wnPb40_RL6rm6qT-yE_T2a99COuMdpumC8oHHoUxdNU8wVv_Z56qf0Cq692CdxFAQRudpc5wkDHgec5nEaBAFnRQw8IYQGAYQ09K_ENXFJ4HkkcX0SB2QRc5r4XsF5QQPqUdcJXKipqBbW6xZKl1eibTu49rw4jdyriuZQtf1hS0IkfEP9U4cQJ1xd6es-heZd2TqBW4nWtKMaI0wF170jQIv-tQGJhjpCyBIdvl6gW9nV6JswG3RYk_VnMR_683so68_vCSXbq05X1ydnK4XZdPmCqXqfyw8pvdHqL2B2gHqwrUPWe2u21-T_AgAA___ZR6yF">