On Thursday 08 March 2007 09:41, Shaun Jackman wrote: > On 3/7/07, Eric Weddington <[EMAIL PROTECTED]> wrote: > > Hi Shaun, > > > > Thanks a lot for doing the leg work on this! > > > > But I have a favor to ask: Can you find out approximately *when* this got > > fixed? i.e., can you test 4.1.2, and the current 4.2.x branch to see if > > it's fixed at either of those two points?
Hi. Avr-gcc 4.1.2 is correct. Possible, this is the GCC bug #28386: "Wrong code with if condition in loop", opened at Jul 2006. It was fixed at Sep 2006. See: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28386 I have try the file of this bug from GCC testsuite: 20060905-1.c Avr-gcc 4.1.1 (pure release) gives incorrect result. More, this result is depended of RAM start address, i.e. it may be different for different chips. Avr-gcc 4.1.2 gives correct code (although not the smallest). Dmitry. _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
