Opened 12 years ago
Closed 12 years ago
#38008 closed defect (wontfix)
avr-gcc application
| Reported by: | wcontello | Owned by: | g5pw (Aljaž Srebrnič) |
|---|---|---|---|
| Priority: | Normal | Milestone: | |
| Component: | ports | Version: | 2.1.3 |
| Keywords: | Cc: | ||
| Port: | avr-gcc |
Description (last modified by ryandesign (Ryan Carsten Schmidt))
I cannot see how to file a report with the application maintainer: it appears a 16 bit compare tries to use a register that the compiler expected to be 0 but is not. When I compile a set of source using version 4.5.1 I get code that works but when I use 4.7.2 the code does not work. I am attaching a zip file which contains:
- a MakeFile for building the avr hex and elf files along with the commands I use to get the resulting files
- a pdf where I have tried to highlight the offending lines
- a main.c file you can compile using the make file to build the avr target or build for your native platform (I'm on a Mac OS X machine so I have a
__APPLE__preprocessor which you may need to change) - a Problem.txt file that details what I was trying to do (The LED does in one direction and never turns around)
Attachments (1)
Change History (6)
Changed 12 years ago by wcontello
| Attachment: | CompilerBugDemo.zip added |
|---|
comment:2 Changed 12 years ago by ryandesign (Ryan Carsten Schmidt)
| Cc: | wcontello@… removed |
|---|---|
| Description: | modified (diff) |
| Keywords: | avr-gcc 4.7.2 removed |
| Owner: | changed from macports-tickets@… to g5pw@… |
comment:3 follow-up: 4 Changed 12 years ago by g5pw (Aljaž Srebrnič)
I'll try to look into it, but this is probably a bug in the compiler, so I'll forward your test case to the compiler authors.
comment:4 Changed 12 years ago by wcontello
Replying to g5pw@…:
I'll try to look into it, but this is probably a bug in the compiler, so I'll forward your test case to the compiler authors.
In the mean time can you back the mac ports compiler back to a previous version? This way mac port users will have a working compiler and not have to point their make files to a different compiler. Is there any way I can start helping you? I would like to learn.
comment:5 Changed 12 years ago by g5pw (Aljaž Srebrnič)
| Resolution: | → wontfix |
|---|---|
| Status: | new → closed |
So, problem was reported upstream in the mailing list, see http://gcc.gnu.org/ml/gcc/2013-02/msg00276.html. I can't back track avr-gcc to a previous version, but chances are, that you still have the older version installed, try running a
port installed avr-gcc
and see if you have the older (4.5.1) version still installed. you can then run
port activate avr-gcc @4.5.1_0
or something like that, and you'll have the older compiler activated.
In the mean time, we'll wait for the upstream fix.
supporting files to demonstrate problem