Merge lp:~widelands-dev/widelands/valgrind into lp:widelands

[GunChleoc]

Update Valgrind suppressions and fix uninitialized variables reported by Valgrind Memcheck
- Uninitialized variable in default AI
- Uninitialized variables in Building Statistics
- Exclude more errors from zip filesystem, Eris and graphics drivers

I used Valgrind to have a look at memory errors caused by Widelands code. Found a few uninitialized variables. Our code seems to be pretty clean already thanks to ASan :)

[Klaus Halfmann (klaus-halfmann)]

Code looks fine, will not do any further tests.

review: Approve (code review)

[GunChleoc (gunchleoc)]

I think I have tested this sufficiently. Thanks for the review

@bunnybot merge

[bunnybot (widelandsofficial)]

Continuous integration builds have changed state:

Travis build 4576. State: passed. Details: https://travis-ci.org/widelands/widelands/builds/504273300.
Appveyor build 4363. State: failed. Details: https://ci.appveyor.com/project/widelands-dev/widelands/build/_widelands_dev_widelands_valgrind-4363.

=== modified file 'src/ai/defaultai.cc'
--- src/ai/defaultai.cc	2019-02-23 11:00:49 +0000
+++ src/ai/defaultai.cc	2019-03-10 11:45:59 +0000
@@ -113,6 +113,7 @@
      ts_in_const_count_(0),
      ts_without_trainers_(0),
      enemysites_check_delay_(30),
+	 spots_(0),
      resource_necessity_water_needed_(false),
      highest_nonmil_prio_(0),
      expedition_ship_(kNoShip) {

=== modified file 'src/wui/building_statistics_menu.cc'
--- src/wui/building_statistics_menu.cc	2019-02-23 11:00:49 +0000
+++ src/wui/building_statistics_menu.cc	2019-03-10 11:45:59 +0000
@@ -111,6 +111,11 @@
                             kButtonHeight,
                             "",
                             UI::Align::kRight),
+	 current_building_type_(INVALID_INDEX),
+	 last_building_index_(0),
+	 last_building_type_(INVALID_INDEX),
+	 lastupdate_(0),
+	 was_minimized_(false),
      low_production_(33),
      has_selection_(false),
      nr_building_types_(parent.egbase().tribes().nrbuildings()) {

=== modified file 'valgrind.supp'
--- valgrind.supp	2019-03-10 09:07:24 +0000
+++ valgrind.supp	2019-03-10 11:45:59 +0000
@@ -48,6 +48,13 @@
    ...
 }
 {
+   driver1
+   Memcheck:Addr1
+   ...
+   obj:*965_dri.so
+   ...
+}
+{
    driver2
    Memcheck:Addr2
    ...
@@ -69,6 +76,13 @@
    ...
 }
 {
+   driver16
+   Memcheck:Addr16
+   ...
+   obj:*i965_dri.so
+   ...
+}
+{
    SDL2Leak
    Memcheck:Leak
    ...
@@ -95,3 +109,39 @@
    obj:*linux-gnu/lib*
    ...
 }
+{
+   ZipWriteValue8
+   Memcheck:Value8
+   ...
+   fun:zipWriteInFileInZip
+   ...
+}
+{
+   ZipWriteCond
+   Memcheck:Cond
+   ...
+   fun:zipWriteInFileInZip
+   ...
+}
+{
+   ZipCloseCond
+   Memcheck:Cond
+   ...
+   fun:zipCloseFileInZip
+   ...
+}
+{
+   ZipCloseParam
+   Memcheck:Param
+   write(buf)
+   ...
+   fun:zipCloseFileInZip
+   ...
+}
+{
+   ErisLeak
+   Memcheck:Leak
+   ...
+   fun:l_alloc
+   ...
+}