https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86917
Bug ID: 86917
Summary: ICE in verify_ctor_sanity, at cp/constexpr.c:2798
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hans.buchmann at fhnw dot ch
Target Milestone: ---
Created attachment 44526
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44526&action=edit
The Bug
Compiling the (wrong) code
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struct Byte
{
constexpr Byte():c(0){}
static const Byte Zero;
unsigned c;
};
struct Word
{
typedef Byte W[4];
constexpr Word():w({Byte::Zero,Byte::Zero,Byte::Zero,Byte::Zero}){}
W w;
};
struct AES256
{
AES256();
Word w[60];
};
AES256::AES256()
{
}
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with
g++ -c -o bug.o bug.cc
results in:
------8<------8<------8<------8<------8<------8<------8<------
bug.cc: In constructor \u2018AES256::AES256()\u2019:
bug.cc:21:16: in \u2018constexpr\u2019 expansion of \u2018Word()\u2019
bug.cc:21:16: internal compiler error: in verify_ctor_sanity, at
cp/constexpr.c:2798
AES256::AES256()
^
Please submit a full bug report,
with preprocessed source if appropriate.
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g++ -v
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Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib \
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info \
--with-bugurl=https://bugs.archlinux.org/ \
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ \
--enable-shared --enable-threads=posix --enable-libmpx \
--with-system-zlib --with-isl --enable-__cxa_atexit \
--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch \
--disable-libssp --enable-gnu-unique-object --enable-linker-build-id \
--enable-lto --enable-plugin --enable-install-libiberty
--with-linker-hash-style=gnu\
--enable-gnu-indirect-function --enable-multilib --disable-werror \
--enable-checking=release --enable-default-pie --enable-default-ssp
--enable-cet=auto
Thread model: posix
gcc version 8.2.0 (GCC)
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Sincerely
Hans Buchmann
