https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92010
Bug ID: 92010
Summary: gcc internal error since 8x on warning write-strings
Product: gcc
Version: 9.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mikolajmm at gmail dot com
Target Milestone: ---
Created attachment 47002
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47002&action=edit
internal compiler error with casting const char* to char*
In version 7.4 the code results with warning "warning: ISO C++ forbids
converting a string constant to 'char*' [-Wwrite-strings]"
https://godbolt.org/z/WKFPDA
Since 8.x (tested with all versions available on godbolt, and with 8.3.0 on
local machine - Windows Subsystem for Linux).
Attached file and console output are from local machine - Windows Subsystem for
Linux.
console output:
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 8.3.0-6ubuntu1'
--with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 8.3.0 (Ubuntu 8.3.0-6ubuntu1)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-Wextra' '-mtune=generic'
'-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/8/cc1plus -E -quiet -v -imultiarch
x86_64-linux-gnu -D_GNU_SOURCE bug.cpp -mtune=generic -march=x86-64 -Wall
-Wextra -fpch-preprocess -fstack-protector-strong -Wformat-security -o bug.ii
ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/8"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/8/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/include/c++/8
/usr/include/x86_64-linux-gnu/c++/8
/usr/include/c++/8/backward
/usr/lib/gcc/x86_64-linux-gnu/8/include
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/8/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-Wextra' '-mtune=generic'
'-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/8/cc1plus -fpreprocessed bug.ii -quiet -dumpbase
bug.cpp -mtune=generic -march=x86-64 -auxbase bug -Wall -Wextra -version
-fstack-protector-strong -Wformat-security -o bug.s
GNU C++14 (Ubuntu 8.3.0-6ubuntu1) version 8.3.0 (x86_64-linux-gnu)
compiled by GNU C version 8.3.0, GMP version 6.1.2, MPFR version 4.0.2,
MPC version 1.1.0, isl version isl-0.20-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++14 (Ubuntu 8.3.0-6ubuntu1) version 8.3.0 (x86_64-linux-gnu)
compiled by GNU C version 8.3.0, GMP version 6.1.2, MPFR version 4.0.2,
MPC version 1.1.0, isl version isl-0.20-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 1110442b7b958f151ae10a1cb5af9032
bug.cpp: In function ‘int main()’:
bug.cpp:8:35: internal compiler error: in tsubst_default_argument, at
cp/pt.c:12712
TriggerInternalCompilerError();
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-8/README.Bugs> for instructions.
