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From: "jfhart085 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/99558] New: wrong argument types reported for "no matching
 function" error message if ctor argument is a variable
Date: Fri, 12 Mar 2021 08:30:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99558

            Bug ID: 99558
           Summary: wrong argument types reported for "no matching
                    function" error message if ctor argument is a variable
           Product: gcc
           Version: 10.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jfhart085 at gmail dot com
  Target Milestone: ---

Created attachment 50371
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D50371&action=3Dedit
utl2.cc - demonstrates using deliberate error message from compile

Wrong argument types are reported for "no matching function" error message =
for
a ctor if a ctor argument is a variable. The argument is reported as being a
reference when it is not.  An error message is deliberately generated to
demonstrate the problem as follows:

wrong argument type: variable used as argument, first argument is shown as
   "int &" but is actually "int" :

$ g++ -c -o utl2.o utl2.cc
utl2.cc: In function "int main()":
utl2.cc:13:5: error: no matching function for call to "cls4::cls4(int&, int=
)"

correct argument type: constant used as argument, first argument is correct=
ly
shown as "int"

$ g++ -D DBG1 -c -o utl2.o utl2.cc
utl2.cc: In function "int main()":
utl2.cc:13:5: error: no matching function for call to "cls4::cls4(int, int)"

from gcc -v :
Using built-in specs.
COLLECT_GCC=3Dgcc
COLLECT_LTO_WRAPPER=3D/usr/libexec/gcc/x86_64-pc-linux-gnu/10.2.0/lto-wrapp=
er
Target: x86_64-pc-linux-gnu
Configured with: /home/jhart/temp1/gcc-10.2.0/configure --prefix=3D/usr
--disable-multilib --with-system-zlib --enable-languages=3Dc,c++,fortran
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 10.2.0 (GCC)=