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* [Bug c++/67155] New: Linking of complex constexpr static class member failing across files
@ 2015-08-08 3:06 JamesMikeDuPont at googlemail dot com
2015-08-08 3:08 ` [Bug c++/67155] " JamesMikeDuPont at googlemail dot com
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: JamesMikeDuPont at googlemail dot com @ 2015-08-08 3:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67155
Bug ID: 67155
Summary: Linking of complex constexpr static class member
failing across files
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: JamesMikeDuPont at googlemail dot com
Target Milestone: ---
Created attachment 36148
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36148&action=edit
test case
I encountered a strange behavior when creating a class that wraps a constexpr
string.
It seems that the static constant string field wrapped in a class is only
accessible in the same header file and not available in a separate compilation
unit.
The workaround is to move the usage of the static fields into the header.
If you prefer git you can find the test case here as well :
https://github.com/h4ck3rm1k3/gcc-plugin-cpp-template/tree/constexpr/testcase
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug c++/67155] Linking of complex constexpr static class member failing across files 2015-08-08 3:06 [Bug c++/67155] New: Linking of complex constexpr static class member failing across files JamesMikeDuPont at googlemail dot com @ 2015-08-08 3:08 ` JamesMikeDuPont at googlemail dot com 2015-08-08 4:00 ` JamesMikeDuPont at googlemail dot com ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: JamesMikeDuPont at googlemail dot com @ 2015-08-08 3:08 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67155 --- Comment #1 from James Michael DuPont <JamesMikeDuPont at googlemail dot com> --- The compiler output : g++ -std=gnu++11 test.cpp test.hpp /tmp/cceBFmJM.o: In function `S::S()': test.cpp:(.text+0x35): undefined reference to `S::u' collect2: error: ld returned 1 exit status Makefile:2: recipe for target 'test' failed make: *** [test] Error 1 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/67155] Linking of complex constexpr static class member failing across files 2015-08-08 3:06 [Bug c++/67155] New: Linking of complex constexpr static class member failing across files JamesMikeDuPont at googlemail dot com 2015-08-08 3:08 ` [Bug c++/67155] " JamesMikeDuPont at googlemail dot com @ 2015-08-08 4:00 ` JamesMikeDuPont at googlemail dot com 2015-08-08 4:10 ` JamesMikeDuPont at googlemail dot com ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: JamesMikeDuPont at googlemail dot com @ 2015-08-08 4:00 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67155 --- Comment #2 from James Michael DuPont <JamesMikeDuPont at googlemail dot com> --- adding this seems to solve the linker error: constexpr CU S::u; ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/67155] Linking of complex constexpr static class member failing across files 2015-08-08 3:06 [Bug c++/67155] New: Linking of complex constexpr static class member failing across files JamesMikeDuPont at googlemail dot com 2015-08-08 3:08 ` [Bug c++/67155] " JamesMikeDuPont at googlemail dot com 2015-08-08 4:00 ` JamesMikeDuPont at googlemail dot com @ 2015-08-08 4:10 ` JamesMikeDuPont at googlemail dot com 2015-08-08 6:07 ` trippels at gcc dot gnu.org 2015-08-08 8:06 ` redi at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: JamesMikeDuPont at googlemail dot com @ 2015-08-08 4:10 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67155 James Michael DuPont <JamesMikeDuPont at googlemail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED --- Comment #3 from James Michael DuPont <JamesMikeDuPont at googlemail dot com> --- got feedback on so http://stackoverflow.com/questions/31889247/c-static-constexpr-class-member-with-complex-class-linking-issues/31889510#31889510 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/67155] Linking of complex constexpr static class member failing across files 2015-08-08 3:06 [Bug c++/67155] New: Linking of complex constexpr static class member failing across files JamesMikeDuPont at googlemail dot com ` (2 preceding siblings ...) 2015-08-08 4:10 ` JamesMikeDuPont at googlemail dot com @ 2015-08-08 6:07 ` trippels at gcc dot gnu.org 2015-08-08 8:06 ` redi at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: trippels at gcc dot gnu.org @ 2015-08-08 6:07 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67155 Markus Trippelsdorf <trippels at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |trippels at gcc dot gnu.org Resolution|FIXED |INVALID ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/67155] Linking of complex constexpr static class member failing across files 2015-08-08 3:06 [Bug c++/67155] New: Linking of complex constexpr static class member failing across files JamesMikeDuPont at googlemail dot com ` (3 preceding siblings ...) 2015-08-08 6:07 ` trippels at gcc dot gnu.org @ 2015-08-08 8:06 ` redi at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: redi at gcc dot gnu.org @ 2015-08-08 8:06 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67155 --- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> --- https://gcc.gnu.org/wiki/VerboseDiagnostics#missing_static_const_definition ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-08-08 8:06 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-08-08 3:06 [Bug c++/67155] New: Linking of complex constexpr static class member failing across files JamesMikeDuPont at googlemail dot com 2015-08-08 3:08 ` [Bug c++/67155] " JamesMikeDuPont at googlemail dot com 2015-08-08 4:00 ` JamesMikeDuPont at googlemail dot com 2015-08-08 4:10 ` JamesMikeDuPont at googlemail dot com 2015-08-08 6:07 ` trippels at gcc dot gnu.org 2015-08-08 8:06 ` redi at gcc dot gnu.org
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