I'm not sure this issues if fixable, but wanted to document it incase someone
else comes across it.
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What steps will reproduce the problem?
1. Compile attachment.
2. Run it.
$ clang++ -DDEBUG printto-example.cpp libgtest.a -lpthread && ./a.out
A is awesome
1-byte object <20>
$ g++ -DDEBUG printto-example.cpp libgtest.a -lpthread && ./a.out
A is awesome
1-byte object <00>
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What is the expected output? What do you see instead?
$ ./a.out
A is awesome
A is awesome
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Work around?
Create a PrintTo method for all the sub-classes.
----------------------------------------------
Why does this happen?
gtest has the following PrintTo template;
template <typename T>
void PrintTo(const T& value, ::std::ostream* os);
This templated PrintTo is specific when the PrintTo which takes the BaseClass.
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Possible solution
Use SFINAE to detect if the default PrintTo should be called. Example of how
this might work is found in the printto-possiblefix.cpp file.
----------------------------------------------
What version of Google Test are you using? On what operating system?
gtest 1.6.0-1ubuntu4, Linux Ubuntu Precise.
ii clang 3.0-6ubuntu3
Low-Level Virtual Machine (LLVM), C language
family frontend
ii clang-format 1.191733.53539707
clang-format
ii clang-tools 3.2-1
Clang tools
ii libclang-common-dev 3.0-6ubuntu3
clang library - Common development package
ii libllvm3.0 3.0-4ubuntu1
Low-Level Virtual Machine (LLVM), runtime
library
ii libllvm3.0:i386 3.0-4ubuntu1
Low-Level Virtual Machine (LLVM), runtime
library
ii llvm-3.0 3.0-4ubuntu1
Low-Level Virtual Machine (LLVM)
ii llvm-3.0-dev 3.0-4ubuntu1
Low-Level Virtual Machine (LLVM), libraries and
headers
ii llvm-3.0-runtime 3.0-4ubuntu1
Low-Level Virtual Machine (LLVM), bytecode
interpreter
ii gcc-4.6 4.6.3-1ubuntu5
GNU C compiler
ii gcc-4.6-base 4.6.3-1ubuntu5
GCC, the GNU Compiler Collection (base package)
ii gcc-4.6-base:i386 4.6.3-1ubuntu5
GCC, the GNU Compiler Collection (base package)
ii gcc-4.6-multilib 4.6.3-1ubuntu5
GNU C compiler (multilib files)
$ gcc --version
gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
$ clang --version
Ubuntu clang version 3.0-6ubuntu3 (tags/RELEASE_30/final) (based on LLVM 3.0)
Target: x86_64-pc-linux-gnu
Thread model: posix
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Please provide any additional information below, such as a code snippet.
Original issue reported on code.google.com by mit...@mithis.com on 14 Oct 2013 at 9:35
Original issue reported on code.google.com by
mit...@mithis.comon 14 Oct 2013 at 9:35Attachments: