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* [Bug c++/65843] New: multiple use of const variable in lamba in template function causes compile error @ 2015-04-22 10:03 darklin20 at gmail dot com 2015-04-22 10:52 ` [Bug c++/65843] [5/6 Regression] " redi at gcc dot gnu.org ` (6 more replies) 0 siblings, 7 replies; 8+ messages in thread From: darklin20 at gmail dot com @ 2015-04-22 10:03 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65843 Bug ID: 65843 Summary: multiple use of const variable in lamba in template function causes compile error Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: major Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: darklin20 at gmail dot com The source code in next report is completely valid source code but GCC 5.0.0 rejects to compile it. Older version of GCC can compile this. I tested this in Ubuntu but I've got the same report in fedora from other user. If I change the type of varaible 'a' to int from const int, or make the test function non-template, it can be compiled. ------------------------------------------------------------------------------- the exact version of GCC 5.0.0 20150329 (experimental) [trunk revision 221764] (Ubuntu 5-20150329-1ubuntu11~14.04) the system type x86_64-linux-gnu the options given when GCC was configured/built Configured with: ../src/configure -v --with-pkgversion='Ubuntu 5-20150329-1ubuntu11~14.04' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs --enable-languages=c,ada,c++,java,go,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-5 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/5 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=c++98 --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-checking=yes --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu the complete command line that triggers the bug g++-5 -std=c++11 test.cpp the compiler output (error messages, warnings, etc.) test.cpp: In instantiation of 'test(T)::<lambda()> [with T = int]': test.cpp:5:7: required from 'struct test(T) [with T = int]::<lambda()>' test.cpp:5:28: required from 'void test(T) [with T = int]' test.cpp:9:11: required from here test.cpp:5:27: error: redeclaration of 'const int& a' [&] () { return a, a; }(); ^ test.cpp:5:27: note: 'const int& a' previously declared here test.cpp: In instantiation of 'void test(T) [with T = int]': test.cpp:9:11: required from here test.cpp:5:5: sorry, unimplemented: non-trivial designated initializers not supported [&] () { return a, a; }(); the preprocessed file (*.i*) that triggers the bug # 1 "test.cpp" # 1 "<built-in>" # 1 "<command-line>" # 1 "/usr/include/stdc-predef.h" 1 3 4 # 1 "<command-line>" 2 # 1 "test.cpp" template<class T> void test(T b) { const int a = b; [&] () { return a, a; }(); } int main() { test(1); return 0; } ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/65843] [5/6 Regression] multiple use of const variable in lamba in template function causes compile error 2015-04-22 10:03 [Bug c++/65843] New: multiple use of const variable in lamba in template function causes compile error darklin20 at gmail dot com @ 2015-04-22 10:52 ` redi at gcc dot gnu.org 2015-04-25 13:46 ` redi at gcc dot gnu.org ` (5 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: redi at gcc dot gnu.org @ 2015-04-22 10:52 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65843 Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |rejects-valid Status|UNCONFIRMED |NEW Last reconfirmed| |2015-04-22 Known to work| |4.9.2 Summary|multiple use of const |[5/6 Regression] multiple |variable in lamba in |use of const variable in |template function causes |lamba in template function |compile error |causes compile error Ever confirmed|0 |1 Severity|major |normal ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/65843] [5/6 Regression] multiple use of const variable in lamba in template function causes compile error 2015-04-22 10:03 [Bug c++/65843] New: multiple use of const variable in lamba in template function causes compile error darklin20 at gmail dot com 2015-04-22 10:52 ` [Bug c++/65843] [5/6 Regression] " redi at gcc dot gnu.org @ 2015-04-25 13:46 ` redi at gcc dot gnu.org 2015-06-03 5:07 ` sebastien.alaiwan at gmail dot com ` (4 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: redi at gcc dot gnu.org @ 2015-04-25 13:46 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65843 Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |myoga.murase at gmail dot com --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- *** Bug 65885 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/65843] [5/6 Regression] multiple use of const variable in lamba in template function causes compile error 2015-04-22 10:03 [Bug c++/65843] New: multiple use of const variable in lamba in template function causes compile error darklin20 at gmail dot com 2015-04-22 10:52 ` [Bug c++/65843] [5/6 Regression] " redi at gcc dot gnu.org 2015-04-25 13:46 ` redi at gcc dot gnu.org @ 2015-06-03 5:07 ` sebastien.alaiwan at gmail dot com 2015-06-19 14:34 ` jason at gcc dot gnu.org ` (3 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: sebastien.alaiwan at gmail dot com @ 2015-06-03 5:07 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65843 Sebastien Alaiwan <sebastien.alaiwan at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |sebastien.alaiwan at gmail dot com --- Comment #2 from Sebastien Alaiwan <sebastien.alaiwan at gmail dot com> --- *** Bug 66374 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/65843] [5/6 Regression] multiple use of const variable in lamba in template function causes compile error 2015-04-22 10:03 [Bug c++/65843] New: multiple use of const variable in lamba in template function causes compile error darklin20 at gmail dot com ` (2 preceding siblings ...) 2015-06-03 5:07 ` sebastien.alaiwan at gmail dot com @ 2015-06-19 14:34 ` jason at gcc dot gnu.org 2015-06-19 18:16 ` jason at gcc dot gnu.org ` (2 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: jason at gcc dot gnu.org @ 2015-06-19 14:34 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65843 Jason Merrill <jason at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED CC| |jason at gcc dot gnu.org Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/65843] [5/6 Regression] multiple use of const variable in lamba in template function causes compile error 2015-04-22 10:03 [Bug c++/65843] New: multiple use of const variable in lamba in template function causes compile error darklin20 at gmail dot com ` (3 preceding siblings ...) 2015-06-19 14:34 ` jason at gcc dot gnu.org @ 2015-06-19 18:16 ` jason at gcc dot gnu.org 2015-06-19 18:25 ` jason at gcc dot gnu.org 2015-06-22 17:37 ` jason at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: jason at gcc dot gnu.org @ 2015-06-19 18:16 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65843 --- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> --- Author: jason Date: Fri Jun 19 18:15:24 2015 New Revision: 224676 URL: https://gcc.gnu.org/viewcvs?rev=224676&root=gcc&view=rev Log: PR c++/65843 * pt.c (tsubst_copy_and_build): Register a capture proxy in local_specializations. Added: trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-rep1.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/pt.c ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/65843] [5/6 Regression] multiple use of const variable in lamba in template function causes compile error 2015-04-22 10:03 [Bug c++/65843] New: multiple use of const variable in lamba in template function causes compile error darklin20 at gmail dot com ` (4 preceding siblings ...) 2015-06-19 18:16 ` jason at gcc dot gnu.org @ 2015-06-19 18:25 ` jason at gcc dot gnu.org 2015-06-22 17:37 ` jason at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: jason at gcc dot gnu.org @ 2015-06-19 18:25 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65843 --- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> --- Author: jason Date: Fri Jun 19 18:24:18 2015 New Revision: 224681 URL: https://gcc.gnu.org/viewcvs?rev=224681&root=gcc&view=rev Log: PR c++/65843 * pt.c (tsubst_copy_and_build): Register a capture proxy in local_specializations. Added: branches/gcc-5-branch/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-rep1.C Modified: branches/gcc-5-branch/gcc/cp/ChangeLog branches/gcc-5-branch/gcc/cp/pt.c ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/65843] [5/6 Regression] multiple use of const variable in lamba in template function causes compile error 2015-04-22 10:03 [Bug c++/65843] New: multiple use of const variable in lamba in template function causes compile error darklin20 at gmail dot com ` (5 preceding siblings ...) 2015-06-19 18:25 ` jason at gcc dot gnu.org @ 2015-06-22 17:37 ` jason at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: jason at gcc dot gnu.org @ 2015-06-22 17:37 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65843 Jason Merrill <jason at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED Target Milestone|--- |5.2 --- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> --- Fixed for 5.2. ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2015-06-22 17:37 UTC | newest] Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-04-22 10:03 [Bug c++/65843] New: multiple use of const variable in lamba in template function causes compile error darklin20 at gmail dot com 2015-04-22 10:52 ` [Bug c++/65843] [5/6 Regression] " redi at gcc dot gnu.org 2015-04-25 13:46 ` redi at gcc dot gnu.org 2015-06-03 5:07 ` sebastien.alaiwan at gmail dot com 2015-06-19 14:34 ` jason at gcc dot gnu.org 2015-06-19 18:16 ` jason at gcc dot gnu.org 2015-06-19 18:25 ` jason at gcc dot gnu.org 2015-06-22 17:37 ` jason at gcc dot gnu.org
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