<URL: http://bugs.freeciv.org/Ticket/Display.html?id=40610 >
2009/2/14 Chris Snook:
>
> I'm using freeciv-2.1.8-1.fc10.i386 from Fedora 10, and it disconnects
> from the server (because the server is crashing) as soon as I make a
> city, and sometimes when exploring a village (presumably when that
> village ends up being a friendly city).
This definitely looks like gcc -bug. Attached workaround patch fixed
it for me on virtual Fedora 10 server.
I have not managed to reproduce this problem on Debian or Ubuntu systems.
- ML
diff -Nurd -X.diff_ignore freeciv/common/aicore/cm.c freeciv/common/aicore/cm.c
--- freeciv/common/aicore/cm.c 2009-01-22 13:16:18.000000000 +0200
+++ freeciv/common/aicore/cm.c 2009-02-23 20:53:32.000000000 +0200
@@ -1047,6 +1047,11 @@
swoop at the end, in order to avoid memory errors. */
tile_type_vector_init(&tofree);
+ /* This freelog() is workaround for waht seems like gcc optimization
+ * bug. If lattice->size is not accessed before for -loop, its value
+ * is considered <= 0 in loop ending condition.
+ * This applies to -O2 optimization on some distributions. */
+ freelog(LOG_DEBUG, "Lattice: %d", lattice->size);
for (i = 0, j = 0; i < lattice->size; i++) {
struct cm_tile_type *ptype = lattice->p[i];
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