brian@uw-june.UUCP (Brian Bershad) (01/01/88)
If definitions for static vars having constructors are in a file
that has nothing else (or nothing else called by the rest of the program),
and that file is placed in an 'ar' archive, the pre-munch pass
of ld does not pull that file in. So, nm does not see the STI defs,
and munch can't do the right thing.
Try:
mystream.c:
----------------
#include <stream.h>
char pcout_buf[BUFSIZE];
filebuf pcout_file(stdout); // UNIX output stream 1
ostream pcout(&pcout_file);
----------------
main.c:
---------------
#include <stream.h>
extern ostream pcout;
main()
{
pcout << "Hello World\n";
}
With:
CC -c mystream.c main.c
CC mystream.o main.o
all is well, but with
CC -c mystream.c main.c
ar r foo.a mystream.o
CC main.o foo.a
a seg fault occurs on the first call to pcout since it isn't getting
properly constructed.
A kludge is to put a function in mystream.c that gets called from main.c
so as to pull the whole file in. Anyone have a better one?
--
brian@june.cs.washington.edu Brian Bershad
{ihnp4,decvax,ucbvax}!uw-beaver!uw-june!brian Dept. of Computer Science, FR-35
University of Washington
Seattle, WA 98195