using packaged constant via packaged function produces undefined reference

[hiyuh]

w/ proposed regression issueI,

package p is
    pure function f(
        i : boolean
    ) return integer;
end package p;

package body p is
    pure function f(
        i : boolean
    ) return integer is
    begin
        if (i = false) then
            return 0;
        else
            return 1;
        end if;
    end function f;
end package body p;

use work.p.all;
package q is
    constant d : integer := f(true) + 1;
end package q;

package body q is
end package body q;

use work.q.all;
entity issueI is
begin
    assert (d = 2);
end entity issueI;

architecture a of issueI is
begin
end architecture a;

then i got,

hiyuh@lynx ~/git-repos/nvc
$ ./tools/nvc-wrapper.sh -a test/regress/issueI.vhd
NVC_LIBPATH=./lib/std:./lib/ieee:./lib/nvc NVC_CYG_LIB=./src ./src/nvc -a test/regress/issueI.vhd

hiyuh@lynx ~/git-repos/nvc
$ ./tools/nvc-wrapper.sh --codegen p
NVC_LIBPATH=./lib/std:./lib/ieee:./lib/nvc NVC_CYG_LIB=./src ./src/nvc --codegen p
/usr/bin/opt -O2 -o /home/hiyuh/git-repos/nvc/work/_WORK.P-body.bc /home/hiyuh/git-repos/nvc/work/_WORK.P-body.bc
/usr/bin/llc -relocation-model=pic /home/hiyuh/git-repos/nvc/work/_WORK.P-body.bc
/usr/bin/gcc -shared -Wl,--export-all-symbols -Wl,--out-implib=/home/hiyuh/git-repos/nvc/work/_WORK.P-body.a -o /home/hiyuh/git-repos/nvc/work/_WORK.P-body.so /home/hiyuh/git-repos/nvc/work/_WORK.P-body.s -L./src -lnvcimp

hiyuh@lynx ~/git-repos/nvc
$ ./tools/nvc-wrapper.sh --codegen q
NVC_LIBPATH=./lib/std:./lib/ieee:./lib/nvc NVC_CYG_LIB=./src ./src/nvc --codegen q
/usr/bin/opt -O2 -o /home/hiyuh/git-repos/nvc/work/_WORK.Q-body.bc /home/hiyuh/git-repos/nvc/work/_WORK.Q-body.bc
/usr/bin/llc -relocation-model=pic /home/hiyuh/git-repos/nvc/work/_WORK.Q-body.bc
/usr/bin/gcc -shared -Wl,--export-all-symbols -Wl,--out-implib=/home/hiyuh/git-repos/nvc/work/_WORK.Q-body.a -o /home/hiyuh/git-repos/nvc/work/_WORK.Q-body.so /home/hiyuh/git-repos/nvc/work/_WORK.Q-body.s -L./src -lnvcimp /home/hiyuh/git-repos/nvc/work/_WORK.P-body.a

hiyuh@lynx ~/git-repos/nvc
$ ./tools/nvc-wrapper.sh -e issueI
NVC_LIBPATH=./lib/std:./lib/ieee:./lib/nvc NVC_CYG_LIB=./src ./src/nvc -e issueI
/usr/bin/opt -O2 -o /home/hiyuh/git-repos/nvc/work/_WORK.ISSUEI.final.bc /home/hiyuh/git-repos/nvc/work/_WORK.ISSUEI.elab.bc

hiyuh@lynx ~/git-repos/nvc
$ ./tools/nvc-wrapper.sh -r issueI
NVC_LIBPATH=./lib/std:./lib/ieee:./lib/nvc NVC_CYG_LIB=./src ./src/nvc -r issueI
LLVM ERROR: Could not resolve external global address: WORK.Q.D

hiyuh@lynx ~/git-repos/nvc
$ ./tools/nvc-wrapper.sh -e --native issueI
NVC_LIBPATH=./lib/std:./lib/ieee:./lib/nvc NVC_CYG_LIB=./src ./src/nvc -e --native issueI
/usr/bin/opt -O2 -o /home/hiyuh/git-repos/nvc/work/_WORK.ISSUEI.final.bc /home/hiyuh/git-repos/nvc/work/_WORK.ISSUEI.elab.bc
/usr/bin/llc -relocation-model=pic /home/hiyuh/git-repos/nvc/work/_WORK.ISSUEI.final.bc
/usr/bin/gcc -shared -Wl,--export-all-symbols -Wl,--out-implib=/home/hiyuh/git-repos/nvc/work/_WORK.ISSUEI.elab.a -o /home/hiyuh/git-repos/nvc/work/_WORK.ISSUEI.final.so /home/hiyuh/git-repos/nvc/work/_WORK.ISSUEI.final.s -L./src -lnvcimp /home/hiyuh/git-repos/nvc/work/_WORK.P-body.a /home/hiyuh/git-repos/nvc/work/_WORK.Q-body.a
/tmp/ccsCnK35.o:fake:(.text+0x5c): undefined reference to `WORK.Q.D'
collect2: error: ld returned 1 exit status
** Fatal: /usr/bin/gcc failed with status 256

NOTE: tools/nvc-wrapper.sh is my lazy wrapper script, echos some commands and eval them, you can found here. https://gist.github.com/hiyuh/9639531

IMHO, it looks similar scope problem as reported at issue #53.

[nickg]

Fixed by the above commit