[Bug target/43876] [avr] Improper updating of struct members when written out of order from struct definition
--- Comment #4 from eric dot weddington at atmel dot com 2010-09-20 17:14 --- AFAIK, fixed in the latest xmega patch, which is still not upstream. -- eric dot weddington at atmel dot com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43876
[Bug target/43876] [avr] Improper updating of struct members when written out of order from struct definition
--- Comment #3 from eric dot weddington at atmel dot com 2010-06-09 02:13 --- Confirmed. Testing fix... -- eric dot weddington at atmel dot com changed: What|Removed |Added AssignedTo|unassigned at gcc dot gnu |eric dot weddington at atmel |dot org |dot com Status|UNCONFIRMED |ASSIGNED Ever Confirmed|0 |1 Last reconfirmed|-00-00 00:00:00 |2010-06-09 02:13:23 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43876
[Bug target/43876] [avr] Improper updating of struct members when written out of order from struct definition
--- Comment #2 from justin at mattair dot net 2010-04-29 02:38 --- Created an attachment (id=20511) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20511&action=view) patch for patch-xmega It looks like possibly a copy-paste error was made in the patch-xmega file. The following starting on line 573 of patch-xmega (from the build-avr-gcc-4.3.4-binutils-2.20-libc-1.6.8-insight6.8-dude-5.10-insight-patch script available on AVRFreaks.net): +return *l = 4, (AS2 (sbiw,%r0,1)CR_TAB +AS2 (st,%p0+,%A1) CR_TAB +AS2 (st,%p0,%B1)CR_TAB +AS2 (sbiw,%r0,2)); I think should be: +return *l = 4, (AS2 (sbiw,%r0,2)CR_TAB +AS2 (st,%p0+,%A1) CR_TAB +AS2 (st,%p0,%B1)CR_TAB +AS2 (sbiw,%r0,1)); This may have been caused by copying code from one of the post-increment sections utilizing adiw, then converting it to pre-decrement utilizing sbiw, then forgetting to swap the 2 and 1. I assume that the second sbiw instruction is needed to put the pointer back at the location it was at after the first sbiw. Someone more knowledgeable about GCC's innards should check this. Attached is a patch for the patch-xmega, um, patch. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43876
[Bug target/43876] [avr] Improper updating of struct members when written out of order from struct definition
--- Comment #1 from justin at mattair dot net 2010-04-27 19:52 --- I have upgraded this to critical because it causes data corruption and because I am not certain how to classify this. Lower if needed. -- justin at mattair dot net changed: What|Removed |Added CC||justin at mattair dot net Severity|normal |critical http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43876
