https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106799
Bug ID: 106799
Summary: `forming offset [32, 36] is out of the bounds` error
with precompiled headers
Product: gcc
Version: 12.2.0
URL: https://bugs.launchpad.net/ubuntu/+source/gcc-12/+bug/
1983852
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: pch
Assignee: unassigned at gcc dot gnu.org
Reporter: michal at sawicz dot net
Target Milestone: ---
Host: x86_64
Target: x86_64
Build: x86_64
Created attachment 53527
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53527&action=edit
Header and source files needed to reproduce
NB: googletest required to reproduce.
Given the three minimal source files and the commands:
```
/usr/bin/g++-12 -I/usr/src/googletest/googlemock/include -O2 -std=c++20
-include cmake_pch.hxx -include cmake_pch.hxx -x c++-header -o
cmake_pch.hxx.gch -c cmake_pch.hxx.cxx
/usr/bin/g++-12 -I/usr/src/googletest/googlemock/include -O2 -std=c++20
-include cmake_pch.hxx -c tmp.cpp
```
gcc-12 errors out with the following:
```
In file included from /usr/include/c++/12/ios:40,
from /usr/include/c++/12/ostream:38,
from /usr/include/c++/12/bits/unique_ptr.h:41,
from /usr/include/c++/12/memory:76,
from
/usr/src/googletest/googlemock/include/gmock/gmock-actions.h:139,
from /usr/src/googletest/googlemock/include/gmock/gmock.h:56,
from ./cmake_pch.hxx:5,
from <command-line>:
In static member function ‘static constexpr std::char_traits<char>::char_type*
std::char_traits<char>::copy(char_type*, const char_type*, std::size_t)’,
inlined from ‘constexpr std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::basic_string(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&)
[with _CharT = char; _Traits = std::char_traits<char>;
_Alloc = std::allocator<char>]’ at
/usr/include/c++/12/bits/basic_string.h:675:23,
inlined from ‘constexpr std::__cxx11::basic_string<_CharT, _Traits,
_Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits,
_Allocator>&&, const _CharT*) [with _CharT = char; _Traits = char
_traits<char>; _Alloc = allocator<char>]’ at
/usr/include/c++/12/bits/basic_string.h:3555:43,
inlined from ‘testing::internal::TypedExpectation<F>&
testing::internal::MockSpec<F>::InternalExpectedAt(const char*, int, const
char*, const char*) [with F = void(bool)]’ at /usr/src/googletest/goog
lemock/include/gmock/gmock-spec-builders.h:1278:23,
inlined from ‘virtual void Test_tests_Test::TestBody()’ at tmp.cpp:20:5:
/usr/include/c++/12/bits/char_traits.h:431:56: warning: ‘void*
__builtin_memcpy(void*, const void*, long unsigned int)’ writing 19 bytes into
a region of size 16 overflows the destination [-Wstringop-ove
rflow=]
431 | return static_cast<char_type*>(__builtin_memcpy(__s1, __s2,
__n));
|
~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
In file included from
/usr/src/googletest/googlemock/include/gmock/gmock-function-mocker.h:43,
from /usr/src/googletest/googlemock/include/gmock/gmock.h:58:
/usr/src/googletest/googlemock/include/gmock/gmock-spec-builders.h: In member
function ‘virtual void Test_tests_Test::TestBody()’:
/usr/src/googletest/googlemock/include/gmock/gmock-spec-builders.h:1278:63:
note: at offset 16 into destination object ‘<anonymous>’ of size 32
1278 | const std::string source_text(std::string("EXPECT_CALL(") + obj +
", " +
|
~~~~~~~~~~~~~~~~~~~~~~~^~~~~
In static member function ‘static constexpr std::char_traits<char>::char_type*
std::char_traits<char>::copy(char_type*, const char_type*, std::size_t)’,
inlined from ‘constexpr std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::basic_string(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&)
[with _CharT = char; _Traits = std::char_traits<char>;
_Alloc = std::allocator<char>]’ at
/usr/include/c++/12/bits/basic_string.h:675:23,
inlined from ‘constexpr std::__cxx11::basic_string<_CharT, _Traits,
_Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits,
_Allocator>&&, const _CharT*) [with _CharT = char; _Traits = char
_traits<char>; _Alloc = allocator<char>]’ at
/usr/include/c++/12/bits/basic_string.h:3555:43,
inlined from ‘testing::internal::TypedExpectation<F>&
testing::internal::MockSpec<F>::InternalExpectedAt(const char*, int, const
char*, const char*) [with F = void(bool)]’ at /usr/src/googletest/goog
lemock/include/gmock/gmock-spec-builders.h:1278:23,
inlined from ‘virtual void Test_tests_Test::TestBody()’ at tmp.cpp:20:5:
/usr/include/c++/12/bits/char_traits.h:431:56: warning: ‘void*
__builtin_memcpy(void*, const void*, long unsigned int)’ writing 21 bytes into
a region of size 16 overflows the destination [-Wstringop-ove
rflow=]
431 | return static_cast<char_type*>(__builtin_memcpy(__s1, __s2,
__n));
|
~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
/usr/src/googletest/googlemock/include/gmock/gmock-spec-builders.h: In member
function ‘virtual void Test_tests_Test::TestBody()’:
/usr/src/googletest/googlemock/include/gmock/gmock-spec-builders.h:1278:69:
note: at offset 16 into destination object ‘<anonymous>’ of size 32
1278 | const std::string source_text(std::string("EXPECT_CALL(") + obj +
", " +
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
In static member function ‘static constexpr std::char_traits<char>::char_type*
std::char_traits<char>::copy(char_type*, const char_type*, std::size_t)’,
inlined from ‘constexpr std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::basic_string(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&)
[with _CharT = char; _Traits = std::char_traits<char>;
_Alloc = std::allocator<char>]’ at
/usr/include/c++/12/bits/basic_string.h:675:23,
inlined from ‘constexpr std::__cxx11::basic_string<_CharT, _Traits,
_Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits,
_Allocator>&&, const _CharT*) [with _CharT = char; _Traits = char
_traits<char>; _Alloc = allocator<char>]’ at
/usr/include/c++/12/bits/basic_string.h:3555:43,
inlined from ‘testing::internal::TypedExpectation<F>&
testing::internal::MockSpec<F>::InternalExpectedAt(const char*, int, const
char*, const char*) [with F = void(bool)]’ at /usr/src/googletest/goog
lemock/include/gmock/gmock-spec-builders.h:1278:23,
inlined from ‘virtual void Test_tests_Test::TestBody()’ at tmp.cpp:20:5:
/usr/include/c++/12/bits/char_traits.h:431:56: warning: ‘void*
__builtin_memcpy(void*, const void*, long unsigned int)’ writing 39 bytes into
a region of size 16 overflows the destination [-Wstringop-ove
rflow=]
431 | return static_cast<char_type*>(__builtin_memcpy(__s1, __s2,
__n));
|
~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
/usr/src/googletest/googlemock/include/gmock/gmock-spec-builders.h: In member
function ‘virtual void Test_tests_Test::TestBody()’:
/usr/src/googletest/googlemock/include/gmock/gmock-spec-builders.h:1278:76:
note: at offset 16 into destination object ‘<anonymous>’ of size 32
1278 | const std::string source_text(std::string("EXPECT_CALL(") + obj +
", " +
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
1279 | call + ")");
| ~~~~
In static member function ‘static constexpr std::char_traits<char>::char_type*
std::char_traits<char>::copy(char_type*, const char_type*, std::size_t)’,
inlined from ‘constexpr std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::basic_string(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&)
[with _CharT = char; _Traits = std::char_traits<char>;
_Alloc = std::allocator<char>]’ at
/usr/include/c++/12/bits/basic_string.h:675:23,
inlined from ‘constexpr std::__cxx11::basic_string<_CharT, _Traits,
_Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits,
_Allocator>&&, const _CharT*) [with _CharT = char; _Traits = char
_traits<char>; _Alloc = allocator<char>]’ at
/usr/include/c++/12/bits/basic_string.h:3555:43,
inlined from ‘testing::internal::TypedExpectation<F>&
testing::internal::MockSpec<F>::InternalExpectedAt(const char*, int, const
char*, const char*) [with F = void(bool)]’ at /usr/src/googletest/goog
lemock/include/gmock/gmock-spec-builders.h:1278:23,
inlined from ‘virtual void Test_tests_Test::TestBody()’ at tmp.cpp:20:5:
/usr/include/c++/12/bits/char_traits.h:431:56: warning: ‘void*
__builtin_memcpy(void*, const void*, long unsigned int)’ writing 40 bytes into
a region of size 16 overflows the destination [-Wstringop-ove
rflow=]
431 | return static_cast<char_type*>(__builtin_memcpy(__s1, __s2,
__n));
|
~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
/usr/src/googletest/googlemock/include/gmock/gmock-spec-builders.h: In member
function ‘virtual void Test_tests_Test::TestBody()’:
/usr/src/googletest/googlemock/include/gmock/gmock-spec-builders.h:1278:23:
note: at offset 16 into destination object ‘source_text’ of size 32
1278 | const std::string source_text(std::string("EXPECT_CALL(") + obj +
", " +
| ^~~~~~~~~~~
```
gcc-11 continues to work.
