Bug 2567: we had alliances with status 0 in the data.

src/kernel/ally.c

@@ -28,6 +28,7 @@ typedef struct allies {
 
 static void block_insert(allies *al, struct faction *f, int status) {
     int i = al->num++;
+    assert(status > 0);
     al->status[i] = status;
     al->factions[i] = f;
     /* TODO: heapify */
@@ -94,14 +95,18 @@ void ally_set(allies **p_al, struct faction *f, int status)
             return;
         }
         if (al->num < BLOCKSIZE) {
+            if (status > 0) {
                 block_insert(al, f, status);
+            }
             return;
         }
         p_al = &al->next;
     }
+    if (status > 0) {
         *p_al = calloc(1, sizeof(allies));
         block_insert(*p_al, f, status);
     }
+}
 
 void write_allies(gamedata * data, const allies *alist)
 {
@@ -112,6 +117,7 @@ void write_allies(gamedata * data, const allies *alist)
             const faction * f = al->factions[i];
             if (f && f->_alive) {
                 write_faction_reference(f, data->store);
+                assert(al->status[i] > 0);
                 WRITE_INT(data->store, al->status[i]);
             }
         }
@@ -132,9 +138,12 @@ void read_allies(gamedata * data, allies **p_al)
         f = findfaction(aid);
         if (!f) f = faction_create(aid);
         READ_INT(data->store, &status);
+        /* NB: some data files have allies with status=0 */
+        if (status > 0) {
             ally_set(p_al, f, status);
         }
     }
+}
 
 void allies_free(allies *al)
 {

src/kernel/ally.test.c

@@ -1,6 +1,7 @@
 #include <platform.h>
 #include "types.h"
 #include "ally.h"
+#include "faction.h"
 
 #include <CuTest.h>
 #include <tests.h>
@@ -41,11 +42,36 @@ static void test_allies(CuTest *tc) {
     test_teardown();
 }
 
+static void test_allies_set(CuTest *tc) {
+    struct faction *f1, *f2;
+    struct allies * al = NULL;
+
+    test_setup();
+    f1 = test_create_faction(NULL);
+    f2 = test_create_faction(NULL);
+
+    CuAssertPtrEquals(tc, NULL, al);
+    ally_set(&al, f1, HELP_ALL);
+    CuAssertPtrNotNull(tc, al);
+    ally_set(&al, f1, DONT_HELP);
+    CuAssertPtrEquals(tc, NULL, f1->allies);
+    ally_set(&al, f1, DONT_HELP);
+    CuAssertPtrEquals(tc, NULL, al);
+
+    ally_set(&al, f1, HELP_ALL);
+    ally_set(&al, f2, DONT_HELP);
+    ally_set(&al, f1, DONT_HELP);
+    CuAssertPtrEquals(tc, NULL, al);
+
+    test_teardown();
+}
+
 CuSuite *get_ally_suite(void)
 {
     CuSuite *suite = CuSuiteNew();
     SUITE_ADD_TEST(suite, test_allies);
     SUITE_ADD_TEST(suite, test_allies_clone);
+    SUITE_ADD_TEST(suite, test_allies_set);
     return suite;
 }
 

src/report.c

@@ -1509,7 +1509,7 @@ static int show_allies_cb(struct allies *all, faction *af, int status, void *uda
     if ((mode & HELP_ALL) == HELP_ALL) {
         sbs_strcat(sbp, LOC(f->locale, parameters[P_ANY]));
     }
-    else {
+    else if (mode > 0) {
         int h, hh = 0;
         for (h = 1; h <= HELP_TRAVEL; h *= 2) {
             int p = MAXPARAMS;
@@ -2177,8 +2177,8 @@ report_plaintext(const char *filename, report_context * ctx,
 
         if (wants_stats && r->seen.mode >= seen_travel) {
             if (r->land || r->seen.mode >= seen_unit) {
-                newline(out);
                 statistics(out, r, f);
+                newline(out);
             }
         }
 

src/util/base36.c

@@ -88,7 +88,7 @@ const char *itoab_r(int i, int base, char *s, size_t len)
             }
         }
         else {
-            log_error("static buffer exhauset, itoab(%d, %d)", i, base);
+            log_error("static buffer exhausted, itoab(%d, %d)", i, base);
             assert(i == 0 || !"itoab: static buffer exhausted");
         }
     }