The problem with the endless loop is in the function "smpAllocMsg". There gcc
makes out of the while loop ("freeList == 0") an endless loop.
The problem with the line which is optimized away is in the
smpSendMsgBroadcast, its the line "serviceMsg= msg". This problem can be
avoided if I call another function (I tested printf) before the while loop
(msg->refCount > 0).
These 2 problems only occur if I use the "-O2" switch with "-O1" it works.
What I do not understand is, why is gcc doing that, although I´m using the
volatile keyword!?
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Summary: gcc optimizes line away/optimizes to an endless loop
Product: gcc
Version: 4.4.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: codemasterhs at yahoo dot de
GCC host triplet: cygwin
GCC target triplet: i586-elf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42126
