This bug is seen using the avr-gcc that is built using the script that comes
with FemtoOS 0.88.
Compile the attached program like this:
avr-gcc -O -mmcu=atmega128 small.c -S
It can be seen that func_45() unconditionally loads from volatile g_54. That
is wrong, since in the C code the load is protected by a test.
--
Summary: volatile bug on AVR
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: regehr at cs dot utah dot edu
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: avr
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39223
