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Allow float8, int8, and related datatypes to be passed by value on machines

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where Datum is 8 bytes wide.  Since this will break old-style C functions
(those still using version 0 calling convention) that have arguments or
results of these types, provide a configure option to disable it and retain
the old pass-by-reference behavior.  Likewise, provide a configure option
to disable the recently-committed float4 pass-by-value change.

Zoltan Boszormenyi, plus configurability stuff by me.
This commit is contained in:
Tom Lane
2008-04-21 00:26:47 +00:00
parent be939544a6
commit 8472bf7a73
36 changed files with 661 additions and 243 deletions
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4
src/backend/bootstrap/bootstrap.c
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@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.241 2008/04/18 18:43:09 alvherre Exp $
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.242 2008/04/21 00:26:45 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -122,7 +122,7 @@ static const struct typinfo TypInfo[] = {
F_INT2IN, F_INT2OUT},
{"int4", INT4OID, 0, 4, true, 'i', 'p',
F_INT4IN, F_INT4OUT},
{"float4", FLOAT4OID, 0, 4, true, 'i', 'p',
{"float4", FLOAT4OID, 0, 4, FLOAT4PASSBYVAL, 'i', 'p',
F_FLOAT4IN, F_FLOAT4OUT},
{"name", NAMEOID, CHAROID, NAMEDATALEN, false, 'i', 'p',
F_NAMEIN, F_NAMEOUT},