Details
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Bug
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Resolution: Done
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Not Evaluated
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Qt Creator 4.11.2
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None
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Windows 10, gcc 9.2.0, gdb 8.3.
Arch Linux with KDE/X11, gcc 9.3.0, gdb 9.1.
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All
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252a0431d126ea85a83b67ae266f2d3387d8bd0b
Description
Hello.
Straight to the point.
When I create std::unique_ptr like
std::unique_ptr<my_data> p = std::unique_ptr<my_data>{new my_data};
then I can see correct values of my_data struct in debugger view.
But if I create std::unique_ptr with custom destructor, it doesn't show correct values.
Code to reproduce:
#include <memory> #include <cstring> struct foo { int a; double b; char c; char d[44]; double * p; }; using foo_ptr = std::unique_ptr<foo, void (*)(foo *)>; static foo * alloc_foo() { return new foo; } static void free_foo(foo * p) { delete p; } int main(int argc, char * argv[]) { foo_ptr p = foo_ptr{alloc_foo(), free_foo}; p->a = 10; p->b = 15.; p->c = 'a'; memset(p->d, 0, sizeof(p->d)); p->p = nullptr; }
You need to set breakpoint to the last line of the code and check values of the `p` in the debugger view.
I attached screenshot to illustrate the problem. There are right values at the bottom of debugger view and wrong at the top.
My environment is Windows 10, gcc:
Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/lto-wrapper.exe Target: x86_64-w64-mingw32 Configured with: ../gcc-9.2.0/configure --prefix=/mingw64 --with-local-prefix=/mingw64/local --build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --with-native-system-header-dir=/mingw64/x86_64-w64-mingw32/include --libexecdir=/mingw64/lib --enable-bootstrap --with-arch=x86-64 --with-tune=generic --enable-languages=c,lto,c++,fortran,ada,objc,obj-c++ --enable-shared --enable-static --enable-libatomic --enable-threads=posix --enable-graphite --enable-fully-dynamic-string --enable-libstdcxx-filesystem-ts=yes --enable-libstdcxx-time=yes --disable-libstdcxx-pch --disable-libstdcxx-debug --disable-isl-version-check --enable-lto --enable-libgomp --disable-multilib --enable-checking=release --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --enable-plugin --with-libiconv --with-system-zlib --with-gmp=/mingw64 --with-mpfr=/mingw64 --with-mpc=/mingw64 --with-isl=/mingw64 --with-pkgversion='Rev2, Built by MSYS2 project' --with-bugurl=[https://sourceforge.net/projects/msys2] --with-gnu-as --with-gnu-ld Thread model: posix gcc version 9.2.0 (Rev2, Built by MSYS2 project)
gdb:
GNU gdb (GDB) 8.3 Copyright (C) 2019 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <[http://gnu.org/licenses/gpl.html]> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
Also I tested it on Arch Linux. There is KDE Plasma with X11.
gcc:
Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/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-pkgversion='Arch Linux 9.3.0-1' --with-bugurl=[https://bugs.archlinux.org/] --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d --enable-shared --enable-threads=posix --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 gdc_include_dir=/usr/include/dlang/gdc Thread model: posix gcc version 9.3.0 (Arch Linux 9.3.0-1)
gdb:
GNU gdb (GDB) 9.1 Copyright (C) 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <[http://gnu.org/licenses/gpl.html]> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
If you need some more info, I'd be glad to provide it.
