>Number:         3729
>Category:       c++
>Synopsis:       With a simple testprogram -frepo does not work as expected.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Wed Jul 18 10:46:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Michael Harbeck
>Release:        3.0
>Organization:
>Environment:
System: Linux harbeck2 2.4.5 #1 Sun Jun 10 13:51:26 CEST 2001 i686 unknown
Architecture: i686

	
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../gcc-3.0/configure --enable-shared --enable-threads
--prefix=/usr/local --verbose --with-system-zlib --enable-nls
--enable-version-specific-runtime-libs
>Description:
	The environment variable ``COMPILER_PATH´´ influences the order in
	which header files are searched for. This breaks a simple program
	compiled with the -frepo - option, because collect2 sets this
	variable.
>How-To-Repeat:
		Assume the following file frepo_error.cc <<END
#include <map>

int
main()
{
  std::map<int, int> theMap;

  return 0;
}
END
Try to compile this with the following commands: <<END
#!/bin/bash -x
exec >frepo_error.log 2>&1
rm -f frepo_error.rpo frepo_error.o frepo_error
echo ============== Compiling cc file =====================================
>Fix:
	    Workaround:
	Undefine the environment variable ``COMPILER_PATH´´ before
recompiling
	with collect2.

	I am not sure, that this is really a fix, but it works for me. The
	shell that is used need of cause a ability to undef
``COMPILER_PATH´´
	to work. Here is the patch: <<EOF
diff -r -u gcc-3.0/gcc/tlink.c gcc-3.0.corr/gcc/tlink.c
--- gcc-3.0/gcc/tlink.c Fri May  4 16:45:09 2001
+++ gcc-3.0.corr/gcc/tlink.c    Thu Jun 21 18:21:05 2001
@@ -516,6 +516,12 @@
       fclose (output);
       rename (outname, (char*) f->root.key);
 
+      /*
+       The next line seems to be necessary, because else we get an
+       error linking simple c++-Programs with -frepo
+      */
+      obstack_grow (&temporary_obstack, "unset COMPILER_PATH; ", 21);
+
       obstack_grow (&temporary_obstack, "cd ", 3);
       obstack_grow (&temporary_obstack, f->dir, strlen (f->dir));
       obstack_grow (&temporary_obstack, "; ", 2);
EOF

    Real Fix:
	Even better, I think, is to prevent the environment variable
	``COMPILER_PATH´´ influence the search path of include files.
	I am sorry, that I had not the time to find the correct place where
	to fix this.
>Release-Note:
>Audit-Trail:
>Unformatted:
 >&2
 g++-3.0buggy --verbose -frepo -O2 -c frepo_error.cc
 echo ============== Linking binary ========================================
 >&2
 g++-3.0buggy --verbose -o frepo_error frepo_error.o
 echo ============== Finishing work ========================================
 >&2
 END
 
 Here is the result: <<END
 + rm -f frepo_error.rpo frepo_error.o frepo_error
 + echo ============== Compiling cc file
 =====================================
 ============== Compiling cc file =====================================
 + g++-3.0buggy --verbose -frepo -O2 -c frepo_error.cc
 Reading specs from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/specs
 Configured with: ../gcc-3.0/configure --enable-shared --enable-threads
 --prefix=/usr/local/home/harbeck/local --verbose --with-system-zlib
 --enable-nls --enable-version-specific-runtime-libs
 --program-suffix=-3.0buggy
 Thread model: posix
 gcc version 3.0
  /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/cc1plus -v
 -D__GNUC__=3 -D__GNUC_MINOR__=0 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ -Dunix
 -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem=posix
 -D__OPTIMIZE__ -D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386 -Amachine=i386
 -Di386 -D__i386 -D__i386__ -D__tune_i686__ -D__tune_pentiumpro__
 frepo_error.cc -D__GNUG__=3 -D__GXX_DEPRECATED -D__EXCEPTIONS
 -D__GXX_ABI_VERSION=100 -quiet -dumpbase frepo_error.cc -O2 -version -frepo
 -o /tmp/cc6gwJdW.s
 GNU CPP version 3.0 (cpplib) (i386 Linux/ELF)
 GNU C++ version 3.0 (i686-pc-linux-gnu)
 	compiled by GNU C version 3.0.
 ignoring nonexistent directory
 "/usr/local/home/harbeck/local/i686-pc-linux-gnu/include"
 #include "..." search starts here:
 #include <...> search starts here:
  /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++
  
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 i686-pc-linux-gnu
  
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 backward
  /usr/local/include
  /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include
  /usr/include
 End of search list.
  as -V -Qy -o frepo_error.o /tmp/cc6gwJdW.s
 GNU assembler version 2.11.2 (i686-pc-linux) using BFD version 2.11.2
 + echo ============== Linking binary
 ========================================
 ============== Linking binary ========================================
 + g++-3.0buggy --verbose -o frepo_error frepo_error.o
 Reading specs from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/specs
 Configured with: ../gcc-3.0/configure --enable-shared --enable-threads
 --prefix=/usr/local/home/harbeck/local --verbose --with-system-zlib
 --enable-nls --enable-version-specific-runtime-libs
 --program-suffix=-3.0buggy
 Thread model: posix
 gcc version 3.0
  /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/collect2 -m
 elf_i386 -dynamic-linker /lib/ld-linux.so.2 -o frepo_error /usr/lib/crt1.o
 /usr/lib/crti.o
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/crtbegin.o
 -L/usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0
 -L/usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/../../..
 frepo_error.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/crtend.o
 /usr/lib/crtn.o
 collect: recompiling frepo_error.cc
 Reading specs from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/specs
 Configured with: ../gcc-3.0/configure --enable-shared --enable-threads
 --prefix=/usr/local/home/harbeck/local --verbose --with-system-zlib
 --enable-nls --enable-version-specific-runtime-libs
 --program-suffix=-3.0buggy
 Thread model: posix
 gcc version 3.0
  /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/cc1plus -v
 -isystem
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include
 -isystem
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include
 -isystem /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/include
 -isystem /usr/lib/gcc/i686-pc-linux-gnu/3.0/include -isystem
 /usr/lib/gcc/i686-pc-linux-gnu/include -isystem
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/../../../../
 i686-pc-linux-gnu/bin/i686-pc-linux-gnu/3.0/include -isystem
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/../../../../
 i686-pc-linux-gnu/bin/include -D__GNUC__=3 -D__GNUC_MINOR__=0
 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__
 -D__linux__ -D__unix -D__linux -Asystem=posix -D__OPTIMIZE__
 -D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386 -Amachine=i386 -Di386 -D__i386
 -D__i386__ -D__tune_i686__ -D__tune_pentiumpro__ frepo_error.cc -D__GNUG__=3
 -D__GXX_DEPRECATED -D__EXCEPTIONS -D__GXX_ABI_VERSION=100 -quiet -dumpbase
 frepo_error.cc -O2 -version -frepo -o /tmp/ccK9Lx3d.s
 ignoring nonexistent directory
 "/usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/include"
 ignoring nonexistent directory "/usr/lib/gcc/i686-pc-linux-gnu/3.0/include"
 ignoring nonexistent directory "/usr/lib/gcc/i686-pc-linux-gnu/include"
 ignoring nonexistent directory
 "/usr/local/home/harbeck/local/i686-pc-linux-gnu/bin/i686-pc-linux-gnu/3.0/i
 nclude"
 ignoring nonexistent directory
 "/usr/local/home/harbeck/local/i686-pc-linux-gnu/bin/include"
 GNU CPP version 3.0 (cpplib) (i386 Linux/ELF)
 GNU C++ version 3.0 (i686-pc-linux-gnu)
 	compiled by GNU C version 3.0.
 ignoring nonexistent directory
 "/usr/local/home/harbeck/local/i686-pc-linux-gnu/include"
 ignoring duplicate directory
 "/usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include"
 ignoring duplicate directory
 "/usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include"
 #include "..." search starts here:
 #include <...> search starts here:
  /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include
  /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++
  
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 i686-pc-linux-gnu
  
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 backward
  /usr/local/include
  /usr/include
 End of search list.
 In file included from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_cstring.h:37,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_algobase.h:42,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_tree.h:56,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_map.h:33,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 map:31,
                  from frepo_error.cc:1:
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_cstddef.h:38:25: stddef.h: Datei oder Verzeichnis nicht gefunden
 In file included from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_cstring.h:37,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_algobase.h:42,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_tree.h:56,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_map.h:33,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 map:31,
                  from frepo_error.cc:1:
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_cstddef.h:42: `ptrdiff_t'
    not declared
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_cstddef.h:43: `size_t'
    not declared
 In file included from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_climits.h:38,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_algobase.h:43,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_tree.h:56,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_map.h:33,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 map:31,
                  from frepo_error.cc:1:
 /usr/include/limits.h:124:26: No include path in which to find limits.h
 In file included from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_algobase.h:46,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_tree.h:56,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_map.h:33,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 map:31,
                  from frepo_error.cc:1:
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:55: `size_t'
    undeclared in namespace `std'
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:55: declaration
    of `operator new' as non-function
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:55: invalid
    declarator
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:56: `size_t'
    undeclared in namespace `std'
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:56: declaration
    of `operator new []' as non-function
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:56: invalid
    declarator
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:59: `size_t'
    undeclared in namespace `std'
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:59: parse
    error before `::' token
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:59: `operator
    new' takes type `size_t' (`unsigned int') as first parameter
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:60: `size_t'
    undeclared in namespace `std'
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:60: parse
    error before `::' token
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:60: `operator
    new' takes type `size_t' (`unsigned int') as first parameter
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:65: `size_t'
    undeclared in namespace `std'
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:65: parse
    error before `*' token
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:65: `operator
    new' takes type `size_t' (`unsigned int') as first parameter
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new: In
    function `void* operator new(unsigned int, ...)':
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:65: `place'
    undeclared (first use this function)
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:65: (Each
    undeclared identifier is reported only once for each function it appears 
    in.)
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new: At
    global scope:
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:66: `size_t'
    undeclared in namespace `std'
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:66: parse
    error before `*' token
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 new:66: `operator
    new' takes type `size_t' (`unsigned int') as first parameter
 In file included from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/fpos.h:39,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_iosfwd.h:41,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_algobase.h:48,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_tree.h:56,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_map.h:33,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 map:31,
                  from frepo_error.cc:1:
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 i686-pc-linux-gnu/bits/c++io.h:43: syntax
    error before `;' token
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 i686-pc-linux-gnu/bits/c++io.h:45: syntax
    error before `;' token
 In file included from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_algobase.h:49,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_tree.h:56,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_map.h:33,
                  from
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 map:31,
                  from frepo_error.cc:1:
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_iterator_base_types.h:96: parse
    error before `,' token
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_iterator_base_types.h:100: template
    declaration of `typedef _Tp std::value_type'
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/stl_iterator_base_types.h:100: confused by earlier errors, bailing out
 frepo_error.o: In function `main':
 frepo_error.o(.text+0xa9): undefined reference to `std::_Rb_tree<int,
 std::pair<int const, int>, std::_Select1st<std::pair<int const, int> >,
 std::less<int>, std::allocator<std::pair<int const, int> >
 >::_M_erase(std::_Rb_tree_node<std::pair<int const, int> >*)'
 collect2: ld returned 1 exit status
 + echo ============== Finishing work
 ========================================
 ============== Finishing work ========================================
 END
 
 You can see that the search paths for include files differ between the
 compiling run:
 #include "..." search starts here:
 #include <...> search starts here:
  /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++
  
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 i686-pc-linux-gnu
  
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 backward
  /usr/local/include
  /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include
  /usr/include
 End of search list.
 and the linking run:
 #include "..." search starts here:
 #include <...> search starts here:
  /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include
  /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++
  
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 i686-pc-linux-gnu
  
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 backward
  /usr/local/include
  /usr/include
 End of search list.
 In the linking case at line 38 of file
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include/g++/
 bits/std_cstddef.h
 you can find the line:
 #include_next <stddef.h>
 which is not part of /usr/include or /usr/local/include but only of
 /usr/local/home/harbeck/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include
 Because of this the compile run must fail!