[Bug c++/61381] New: constexpr non captured by template lambda

[Bug c++/61381] New: constexpr non captured by template lambda

[vincenzo.innocente at cern dot ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61381

            Bug ID: 61381
           Summary: constexpr non captured by template lambda
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vincenzo.innocente at cern dot ch

cat ceLambda.cc 
struct Bar {  constexpr Bar(float i):f(i){}; float f;};
float foo1(float x) {
   constexpr Bar z{0};

   auto f = [=](auto a, auto b) -> Bar { return z;};

   return f(x,x).f;

}

float foo2(float x) {
   const Bar z{0};

   auto f = [=](auto a, auto b) -> Bar { return z;};

   return f(x,x).f;

}

float foo3(float x) {
   constexpr Bar z{0};

   auto f = [=](float a, float b) -> Bar { return z;};

   return f(x,x).f;

}

b-d-128-141-131-42:ctest innocent$ c++ -O2 -std=c++1y -S ceLambda.cc 
ceLambda.cc: In instantiation of ‘foo1(float)::<lambda(auto:1, auto:2)> [with
auto:1 = float; auto:2 = float]’:
ceLambda.cc:7:16:   required from here
ceLambda.cc:5:49: error: ‘z’ was not declared in this scope
    auto f = [=](auto a, auto b) -> Bar { return z;};
                                                 ^
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/60732] FAIL: g++.dg/ext/altivec-7.C -std=*  scan-assembler _Z3fooDv*
Date: Sun, 01 Jun 2014 16:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id`732

--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Therefore, I concur that the correct action is to have two tests - one for each
> ABI and run both tests on all targets.

Is the following patch what you have in mind (tested on powerpc-apple-darwin9)?

--- ../_gcc_clean/gcc/testsuite/g++.dg/ext/altivec-7.C    2013-10-13
00:58:24.000000000 +0200
+++ gcc/testsuite/g++.dg/ext/altivec-7.C    2014-06-01 17:56:01.000000000 +0200
@@ -2,6 +2,7 @@
 /* { dg-do compile { target powerpc*-*-* } } */
 /* { dg-require-effective-target powerpc_altivec_ok } */
 /* { dg-options "-maltivec" } */
+/* { dg-additional-options "-fabi-version=4" { target powerpc*-*-darwin* } }
*/

 #include <altivec.h>

gcc/testsuite/g++.dg/ext/altivec-7a.C
--- ../_gcc_clean/gcc/testsuite/g++.dg/ext/altivec-7a.C    1970-01-01
01:00:00.000000000 +0100
+++ gcc/testsuite/g++.dg/ext/altivec-7a.C    2014-06-01 17:56:22.000000000
+0200
@@ -0,0 +1,37 @@
+/* Test for AltiVec type overloading and name mangling.  */
+/* { dg-do compile { target powerpc*-*-* } } */
+/* { dg-require-effective-target powerpc_altivec_ok } */
+/* { dg-options "-maltivec" } */
+/* { dg-additional-options "-fabi-version=2" { target powerpc*-*-darwin* } }
*/
+
+#include <altivec.h>
+
+void foo(vector unsigned char) { }
+void foo(vector signed char) { }
+void foo(vector bool     char) { }
+void foo(vector unsigned short) { }
+void foo(vector signed short) { }
+void foo(vector bool short) { }
+void foo(vector unsigned int) { }
+void foo(vector signed int) { }
+void foo(vector bool int) { }
+void foo(vector float) { }
+void foo(vector pixel) { }
+void foo(int) { }
+void foo(unsigned int) { }
+void foo(float) { }
+
+/* { dg-final { scan-assembler "_Z3fooU8__vectorh" } } */
+/* { dg-final { scan-assembler "_Z3fooU8__vectora" } } */
+/* { dg-final { scan-assembler "_Z3fooU8__vectorU6__boolc" } } */
+/* { dg-final { scan-assembler "_Z3fooU8__vectort" } } */
+/* { dg-final { scan-assembler "_Z3fooU8__vectors" } } */
+/* { dg-final { scan-assembler "_Z3fooU8__vectorU6__bools" } } */
+/* { dg-final { scan-assembler "_Z3fooU8__vectorj" } } */
+/* { dg-final { scan-assembler "_Z3fooU8__vectori" } } */
+/* { dg-final { scan-assembler "_Z3fooU8__vectorU6__booli" } } */
+/* { dg-final { scan-assembler "_Z3fooU8__vectorf" } } */
+/* { dg-final { scan-assembler "_Z3fooU8__vectoru7__pixel" } } */
+/* { dg-final { scan-assembler "_Z3fooi" } } */
+/* { dg-final { scan-assembler "_Z3fooj" } } */
+/* { dg-final { scan-assembler "_Z3foof" } } */

[Bug c++/61381] constexpr non captured by template lambda

[daniel.kruegler at googlemail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61381

Daniel Krügler <daniel.kruegler at googlemail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |daniel.kruegler@googlemail.
                   |                            |com

--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
Recent gcc 4.10 trunk (20140602) accepts the code
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Subject: [Bug c++/60848] [4.7/4.8/4.9/4.10 Regression] Crash while experimenting with c++-0x initializer lists
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id`848

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|4.7.4                       |4.10.0

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk.

[Bug c++/61381] constexpr non captured by template lambda

[vincenzo.innocente at cern dot ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61381

--- Comment #2 from vincenzo Innocente <vincenzo.innocente at cern dot ch> ---
I am still at "trunk revision 210507"
will update and test again

[Bug c++/61381] constexpr non captured by template lambda

[vincenzo.innocente at cern dot ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61381

vincenzo Innocente <vincenzo.innocente at cern dot ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from vincenzo Innocente <vincenzo.innocente at cern dot ch> ---
confirmed it compile with
[trunk revision 211189]
a back port to 4.9.1. would be appreciated