[Bug c++/43875] New: gcc-4.5.0 - ICE on invalid lambda return

[Bug c++/43875] New: gcc-4.5.0 - ICE on invalid lambda return

[paul dot bibbings at gmail dot com]

The following code causes an ICE in gcc-4.5.0.  An error should be reported (as
per n3092, 5.1.2/4) owing to the fact that the return statement is invalid - a
brace-init-list is not an expression and hence the return type is void.

23:38:33 Paul Bibbings@JIJOU
/cygdrive/d/CPPProjects/nano/gcc_bugs $cat _5_1_2_4.cpp
int main()
{
   auto x2 = []{ return { 1, 2 }; };
}


23:39:08 Paul Bibbings@JIJOU
/cygdrive/d/CPPProjects/nano/gcc_bugs $i686-pc-cygwin-gcc-4.5.0 -Wall
-save-temps -std=c++0x -c _5_1_2_4.cpp
_5_1_2_4.cpp: In lambda function:
_5_1_2_4.cpp:3:32: internal compiler error: in convert_like_real, at
cp/call.c:4929
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


23:43:24 Paul Bibbings@JIJOU
/cygdrive/d/CPPProjects/nano/gcc_bugs $i686-pc-cygwin-gcc-4.5.0 -v
Using built-in specs.
COLLECT_GCC=i686-pc-cygwin-gcc-4.5.0
COLLECT_LTO_WRAPPER=/opt/gcc-4.5.0/libexec/gcc/i686-pc-cygwin/4.5.0/lto-wrapper.exe
Target: i686-pc-cygwin
Configured with: ./configure --prefix=/opt/gcc-4.5.0 --enable-bootstrap
--enable-version-specific-runtime-libs --enable-static --enable-shared
--enable-shared-libgcc --disable-__cxa_atexit --with-gnu-ld --with-gnu-as
--with-dwarf2 --disable-sjlj-exceptions --enable-languages=c,c++
--disable-symvers --enable-libgomp --enable-libssp --enable-threads=posix
--with-arch-i686 --with-tune=generic
Thread model: posix
gcc version 4.5.0 (GCC)


23:44:15 Paul Bibbings@JIJOU
/cygdrive/d/CPPProjects/nano/gcc_bugs $cat _5_1_2_4.ii
# 1 "_5_1_2_4.cpp"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "_5_1_2_4.cpp"
int main()
{
   auto x2 = []{ return { 1, 2 }; };
}


-- 
           Summary: gcc-4.5.0 - ICE on invalid lambda return
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: paul dot bibbings at gmail dot com
  GCC host triplet: i686-pc-cygwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43875

[Bug c++/43875] gcc-4.5.0 - ICE on invalid lambda return

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2010-04-23 22:50 -------
Confirmed.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |ice-on-invalid-code
   Last reconfirmed|0000-00-00 00:00:00         |2010-04-23 22:50:08
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43875

[Bug c++/43875] [C++0x] ICE on invalid lambda return

[jason at gcc dot gnu dot org]

------- Comment #2 from jason at gcc dot gnu dot org  2010-04-27 21:21 -------
Subject: Bug 43875

Author: jason
Date: Tue Apr 27 21:21:35 2010
New Revision: 158805

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=158805
Log:
        PR c++/43875
        * semantics.c (lambda_return_type): Complain about
        braced-init-list.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-deduce2.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/semantics.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43875

[Bug c++/43875] [C++0x] ICE on invalid lambda return

[jason at gcc dot gnu dot org]

------- Comment #3 from jason at gcc dot gnu dot org  2010-04-27 23:03 -------
Subject: Bug 43875

Author: jason
Date: Tue Apr 27 23:02:56 2010
New Revision: 158814

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=158814
Log:
        PR c++/43875
        * semantics.c (lambda_return_type): Complain about
        braced-init-list.

Added:
    branches/gcc-4_5-branch/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-deduce2.C
Modified:
    branches/gcc-4_5-branch/gcc/cp/ChangeLog
    branches/gcc-4_5-branch/gcc/cp/semantics.c
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43875

[Bug c++/43875] [C++0x] ICE on invalid lambda return

[jason at gcc dot gnu dot org]

------- Comment #4 from jason at gcc dot gnu dot org  2010-05-03 21:44 -------
Fixed for 4.5.1.


-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.5.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43875