[Bug lto/46808] New: Too verbose diagnostic messages when compiling with LTO

[d.g.gorbachev at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46808

           Summary: Too verbose diagnostic messages when compiling with
                    LTO
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: trivial
          Priority: P3
         Component: lto
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: d.g.gorbachev@gmail.com


===== 1.c =====
int main(void)
{
  return 0;
}
===============

===== 2.c =====
int main;
===============

$ gcc -flto -fuse-linker-plugin 1.c 2.c
2.c:1:5: error: function 'main' redeclared as variable
1.c:1:5: note: previously declared here
2.c:1:5: warning: type of 'main' does not match original declaration [enabled
by default]
1.c:1:5: note: previously declared here
lto1: fatal error: errors during merging of translation units
compilation terminated.
lto-wrapper: gcc returned 1 exit status
/usr/local/bin/ld: fatal error: lto-wrapper failed
collect2: ld returned 1 exit status

Compare it with:

$ gcc -combine 1.c 2.c
2.c:1:5: error: 'main' redeclared as different kind of symbol
1.c:1:5: note: previous definition of 'main' was here