Port Bug Report: syntax errors in spinlocks (s_lock.h)

============================================================================
                        POSTGRESQL BUG REPORT TEMPLATE
============================================================================


Your name               : Jarda Benkovsky
Your email address      : benkovsk@pha.pvt.cz

Category                : install: compile
Severity                : serious

Summary: syntax errors in spinlocks (s_lock.h)

System Configuration
--------------------
  Operating System   : Digital Unix 4.0e

  PostgreSQL version : 6.4.2

  Compiler used      : gcc 2.8.1, DEC C V5.8-009

Hardware:
---------
Alpha 2100
uname -a: OSF1 shadow.pvt.net V4.0 1091 alpha

Versions of other tools:
------------------------
gnu make

--------------------------------------------------------------------------

Problem Description:
--------------------
On Digital Unix alphas, msemaphores are defined as a struct of two ints.
Neither gcc, nor native do not like constructs like *(lock) = 0;

Native cc:

/usr/bin/cc -I../../../include -I../../../backend   -DNOFIXADE  -I../..   -c buf_init.c -o buf_init.o
cc: Error: buf_init.c, line 234: In this statement, "0" is of type "int", and cannot be converted to "struct declared
withouta tag". (noconvert) 
                        S_INIT_LOCK(&(buf->io_in_progress_lock));
------------------------^

GCC:
../../../include/storage/s_lock.h: In function `tas':
In file included from buf_init.c:29:
../../../include/storage/s_lock.h:102: aggregate value used where an integer was expected
buf_init.c: In function `InitBufferPool':
buf_init.c:234: incompatible types in assignment


Especially the case of native CC is interesting, as there
should not be such case and I was not able to reproduce
it in controlled environment - but maybe I did some mistake
during the test.

--------------------------------------------------------------------------

Test Case:
----------
./configure; make

--------------------------------------------------------------------------

Solution:
---------


--------------------------------------------------------------------------