http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49445
Summary: Undefined reference to std::atomic<float> "operator
float"
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: libstdc++
AssignedTo: [email protected]
ReportedBy: [email protected]
Hello,
It looks like std::atomic<float> does is not fully implemented. I get an
undefined reference to its operator float:
libtool: link: g++ -Wall -I/usr/include -I../../src -I../../src -g -O2
-std=c++0x -DNDEBUG -o .libs/psynth_unit_test
psynth_unit_test-psynth_unit_test.o [... a big list of object files ...]
-L/usr/lib64 -lboost_unit_test_framework-mt -lboost_filesystem-mt
-lboost_signals-mt -lboost_system-mt ../psynth/.libs/libpsynth.so -Wl,-rpath
-Wl,/home/raskolnikov/usr/lib
../psynth/.libs/libpsynth.so: undefined reference to
`atomic<float>::operator float() const'
A similar bug happened when I tried std::atomic<my_enum> with "my_enum" being a
"enum class my_enum : int", I got an undefined reference to the "store ()"
method instead.
I am using GCC 4.6 as included in Debian Sid:
g++ --version
g++ (Debian 4.6.0-13) 4.6.1 20110611 (prerelease)
apt-cache show libstdc++6-4.6-dev
Package: libstdc++6-4.6-dev
Source: gcc-4.6
Version: 4.6.0-13
Anyways, thanks a lot for your hard work implementing C++11 :)
JP
