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* [Bug c/36571] New: Default untyped return for AVR is byte register.
@ 2008-06-18 22:54 hutchinsonandy at gcc dot gnu dot org
2008-06-18 23:01 ` [Bug middle-end/36571] " hutchinsonandy at gcc dot gnu dot org
0 siblings, 1 reply; 2+ messages in thread
From: hutchinsonandy at gcc dot gnu dot org @ 2008-06-18 22:54 UTC (permalink / raw)
To: gcc-bugs
Test testsuite/gcc.dg/builtin-return-1.c will fail for avr target.
Default implementation of builtin-return-1 is untyped return of a single
register.
Which is R25 and only 1 byte. This is not int as test expects.
So high byte may and does get overwritten before outer return.
The test may be invalid, but this is also reminder that AVR target does not
have a complete definition for untyped return. The default is pretty useless.
Test with be marked XFAIL.
--
Summary: Default untyped return for AVR is byte register.
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hutchinsonandy at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: avr-unknown-nne
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36571
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug middle-end/36571] Default untyped return for AVR is byte register.
2008-06-18 22:54 [Bug c/36571] New: Default untyped return for AVR is byte register hutchinsonandy at gcc dot gnu dot org
@ 2008-06-18 23:01 ` hutchinsonandy at gcc dot gnu dot org
0 siblings, 0 replies; 2+ messages in thread
From: hutchinsonandy at gcc dot gnu dot org @ 2008-06-18 23:01 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from hutchinsonandy at gcc dot gnu dot org 2008-06-18 23:00 -------
Subject: Bug 36571
Author: hutchinsonandy
Date: Wed Jun 18 22:59:41 2008
New Revision: 136926
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=136926
Log:
PR c/36571
* gcc.dg/builtin-return-1.c: Mark as xfail on AVR.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/builtin-return-1.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36571
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2008-06-18 22:54 [Bug c/36571] New: Default untyped return for AVR is byte register hutchinsonandy at gcc dot gnu dot org
2008-06-18 23:01 ` [Bug middle-end/36571] " hutchinsonandy at gcc dot gnu dot org
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