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


Your name		:	Philip J Spence
Your email address	: philip@picdar.co.uk


System Configuration
---------------------
  Architecture (example: Intel Pentium)  	: Sun Ultra 5/10 UPA/PCI (UltraSPARC-IIi 300MHz)

  Operating System (example: Linux 2.0.26 ELF) 	: SunOS Release 5.8 Version Generic 64-bit

  PostgreSQL version (example: PostgreSQL-7.1):   PostgreSQL-7.1beta4, PostgreSQL-7.1beta6,postgresql-7.1RC1

  Compiler used (example:  gcc 2.8.0)		:	Sun C Compiler version 5.0
  												Sun C Compiler version 4.2


Please enter a FULL description of your problem:
------------------------------------------------

backend core dumps in VACUUM ANALYZE processing in initdb


Please describe a way to repeat the problem.   Please try to provide a
concise reproducible example, if at all possible: 
----------------------------------------------------------------------

Follow INSTALL instructions:
./configure
gmake
gmake check

This fails to complete the initialisation of the temporary database with a
core dump generated.


If you know how this problem might be fixed, list the solution below:
---------------------------------------------------------------------

The problem is due to an alignment error in src/backend/access/heap/tuptoaster.c.
The function toast_save_datum has declaration

char     chunk_data[VARHDRSZ + TOAST_MAX_CHUNK_SIZE];

so chunk_data need not be aligned to some special boundary and I guess the compiler is free
to rearrange the stack frame as it sees fit.  The statement

        VARATT_SIZEP(chunk_data) = chunk_size + VARHDRSZ;

subsequently causes a bus error as it requires alignment for int32.

My instant hack was to change it to

void *chunk_data;

and call palloc to get the required space (remembering to free it before the return).

This fixes the problem.

+++++++++++++++++++++++++++++++++++++++++++
Also src/bin/pg_dump/pg_backup_null.c (line 101 in RC1)

    if (*te->dataDumper)

is considered an error

"pg_backup_null.c", line 101: controlling expressions must have scalar type

This needs to be changed to

    if (*te->dataDumper != NULL)

to placate the compiler.