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Clang crash ( Stack Dump + SIGSEGV) when initializing struct with too few arguments (constexpr constructor) #137866

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Clang crash ( Stack Dump + SIGSEGV) when initializing struct with too few arguments (constexpr constructor)#137866
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Labels
c23clang:frontendLanguage frontend issues, e.g. anything involving "Sema"confirmedVerified by a second partycrashPrefer [crash-on-valid] or [crash-on-invalid]generated by fuzzer
@mariete1223

Description

@mariete1223
mariete1223
opened on Apr 29, 2025

Summary

Clang crashes with SIGSEGV in gcc bolt and stack dump in local when compiling code that incorrectly initializes a struct with fewer arguments than required for a constexpr constructor.
Instead of reporting a clean diagnostic, the compiler crashes during parsing or constant evaluation.

Stack dump

Stack dump:
0.      Program arguments: /usr/local/bin/clang-21 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name prueba.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -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=/root -fcoverage-compilation-dir=/root -resource-dir /usr/local/lib/clang/21 -internal-isystem /usr/local/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/9/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O1 -std=c2x -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/prueba-2dedc7.o -x c prueba.cpp
1.      prueba.cpp:9:22: current parser token '='
  #0 0x0000557026f4318f llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/local/bin/clang-21+0x3c4a18f)
  #1 0x0000557026f40bd4 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
  #2 0x00007fb475beb420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
  #3 0x000055702a734e88 clang::QualType::getSplitDesugaredType(clang::QualType) (/usr/local/bin/clang-21+0x743be88)
  #4 0x000055702a0383cf clang::ASTContext::getBaseElementType(clang::QualType) const (/usr/local/bin/clang-21+0x6d3f3cf)
  #5 0x00005570294dd39a CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
  #6 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
  #7 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
  #8 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
  #9 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #10 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #11 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #12 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #13 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #14 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #15 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #16 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #17 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #18 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #19 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #20 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #21 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #22 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #23 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #24 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #25 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #26 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #27 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #28 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #29 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #30 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #31 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #32 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #33 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #34 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #35 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #36 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #37 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #38 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #39 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #40 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #41 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #42 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #43 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #44 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #45 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #46 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #47 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #48 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #49 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #50 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #51 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #52 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #53 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #54 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #55 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #56 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #57 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #58 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #59 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #60 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #61 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #62 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #63 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #64 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #65 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #66 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #67 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #68 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #69 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #70 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #71 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #72 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #73 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #74 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #75 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #76 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #77 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #78 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #79 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #80 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #81 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #82 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #83 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #84 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #85 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #86 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #87 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #88 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #89 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #90 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #91 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #92 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #93 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #94 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #95 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #96 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #97 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #98 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
 #99 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#100 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#101 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#102 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#103 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#104 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#105 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#106 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#107 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#108 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#109 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#110 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#111 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#112 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#113 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#114 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#115 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#116 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#117 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#118 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#119 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#120 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#121 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#122 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#123 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#124 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#125 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#126 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#127 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#128 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#129 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#130 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#131 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#132 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#133 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#134 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#135 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#136 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#137 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#138 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#139 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#140 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#141 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#142 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#143 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#144 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#145 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#146 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#147 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#148 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#149 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#150 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#151 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#152 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#153 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#154 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#155 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#156 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#157 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#158 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#159 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#160 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#161 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#162 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#163 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#164 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#165 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#166 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#167 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#168 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#169 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#170 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#171 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#172 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#173 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#174 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#175 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#176 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#177 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#178 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#179 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#180 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#181 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#182 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#183 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#184 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#185 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#186 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#187 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#188 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#189 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#190 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#191 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#192 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#193 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#194 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#195 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#196 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#197 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#198 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#199 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#200 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#201 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#202 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#203 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#204 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#205 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#206 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#207 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#208 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#209 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#210 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#211 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#212 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#213 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#214 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#215 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#216 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#217 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#218 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#219 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#220 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#221 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#222 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#223 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#224 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#225 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#226 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#227 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#228 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#229 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#230 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#231 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#232 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#233 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#234 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#235 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#236 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#237 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#238 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#239 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#240 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#241 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#242 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#243 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#244 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#245 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#246 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#247 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#248 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#249 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#250 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#251 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#252 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#253 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#254 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0
#255 0x00005570294dd52f CheckC23ConstexprVarType(clang::Sema&, clang::SourceLocation, clang::QualType) SemaDecl.cpp:0:0

Program

struct Vec {
    float x;
    float y;
    Vec(float x, float y)
        : x(x)
       , y(y) {}
};

constexpr Vec unit_z = Vec{0};

To quickly reproduce

(Here SIGSEV is obtained not stack dump, as happen in local)
https://gcc.godbolt.org/z/Mz6M56or4

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    c23clang:frontendLanguage frontend issues, e.g. anything involving "Sema"confirmedVerified by a second partycrashPrefer [crash-on-valid] or [crash-on-invalid]generated by fuzzer

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