(In reply to Jonathan Wakely from comment #11)
> Yes, it was fixed by r11-4187 but the problem is still present on the gcc-10
> branch.
I think that commit simply makes it possible to use oneTBB, which
doesn't give a warning. But if you use TBB 2020.3 or older, then you
still get a warning.
--
Maybe we could do something like this:
--- a/libstdc++-v3/include/pstl/parallel_backend_tbb.h
+++ b/libstdc++-v3/include/pstl/parallel_backend_tbb.h
@@ -15,6 +15,11 @@
#include "parallel_backend_utils.h"
+#ifndef TBB_SUPPRESS_DEPRECATED_MESSAGES
+# define TBB_SUPPRESS_DEPRECATED_MESSAGES 1
Maybe a dup of PR 104435
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Title:
`demangle_const` causes infinite recursion and stack overflow
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Yes, it was fixed by r11-4187 but the problem is still present on the
gcc-10 branch.
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Title:
libgcc-s1 and libstdc++6 depend on broken libtbb2
No, but "the first non-pure, non-inline virtual function in the class"
is easy for the user to find.
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Title:
[PR42540] c++ error message [vtable
(In reply to Eyal Rozenberg from comment #16)
> I'm not quite sure what a key function is,
Then read the link I gave you in PR 104918 comment 1.
> Not just learners. If you have a large class with many methods, whose
> implementation is spread across many files, it can take quite a bit of time
(In reply to Eyal Rozenberg from comment #16)
> The compiler could store information in the compiled object listing the
> virtual members for which no implementation was found, due to which reason
> the vtable was not defined already. In this specific example, storing the
> name of "A::B()"
*** Bug 104918 has been marked as a duplicate of this bug. ***
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Title:
[PR42540] c++ error message [vtable undefined] is unhelpful
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Tom, it looks like that fix landed upstream after our last sync. Should
we use it?
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Title:
libgcc-s1 and libstdc++6 depend on broken libtbb2
There's no easy solution. Intel contributed the PSTL headers with a
dependency on TBB task.h header, then deprecated that header in a later
TBB release. You need to either use an older TBB, or suppress the
warning.
There is a plan to add an OpenMP backend to PSTL, which will remove the
TBB
requires TBB, as documented:
https://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#status.iso.2017
"Note 3: The Parallel Algorithms have an external dependency on Intel
TBB 2018 or later. If the header is included then -ltbb must
be used to link to TBB."
If you use the parallel algos (or
*** Bug 96283 has been marked as a duplicate of this bug. ***
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Title:
[PR42540] c++ error message [vtable undefined] is unhelpful
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(In reply to Zhihao Yuan from comment #11)
> 1. Adjust the error message to say, "The first non-inline, non-pure function
> may not have a definition in ."
That error comes from the linker. The linker is not part of GCC, so this
is the wrong place to ask for linker changes.
> 2. Add extra
(In reply to Jonathan Wakely from comment #3)
> The linker error alone doesn't make the root cause obvious, but it's a
> fairly well known and well documented problem:
> http://www.parashift.com/c++-faq-lite/strange-inheritance.html#faq-23.10
A better link is now:
*** This bug is a duplicate of bug 1672157 ***
https://bugs.launchpad.net/bugs/1672157
Public bug reported:
running on Lubuntu
ProblemType: Package
DistroRelease: Ubuntu 17.04
Package: mouseemu 0.16-0ubuntu9
ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8
Uname: Linux
doko, this fails for me with 4.8.1, and 4.7.4 and 4.8.0
There are no changes between 4.8.1 and 4.8.2 that could have affected
this.
Are you sure it's a regression?
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*** Bug 61067 has been marked as a duplicate of this bug. ***
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Title:
lp:mir FTBFS: surface_info.h:52:13: error: looser throw specifier for
*** Bug 61067 has been marked as a duplicate of this bug. ***
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Title:
lp:mir FTBFS: error: looser throw specifier for
Trunk: http://gcc.gnu.org/r198975
4.8.1: http://gcc.gnu.org/r198976
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Title:
FTBFS with gcc-4.8: error: invalid qualifiers on non-member function
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Title:
package nvidia-current (not installed) failed to install/upgrade:
nvidia-current kernel module failed to build
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Public bug reported:
will not install on Laptop with nvidia gt555m optimus
ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: nvidia-current (not installed)
ProcVersionSignature: Ubuntu 2.6.38-11.50~lucid1-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic i686
NonfreeKernelModules: nvidia
There's no need to repeat the same info you already provided, please
provide what you _didn't_ provide, as requested by
http://gcc.gnu.org/bugs/#report
we need preprocessed source, and preferably a minimal testcase that has
been reduced to the smallest example that still shows the problem
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