diff --git a/Action.c b/Action.c
index 50ab0bb9b9fc7fa8c2e1899344bdf52eedb1b7ee..1cb59aa038c8ee7649ef027e2c75500249795d9f 100644
--- a/Action.c
+++ b/Action.c
@@ -115,7 +115,7 @@ static void Action_runSetup(Settings* settings, const Header* header, ProcessLis
 
 static bool changePriority(MainPanel* panel, int delta) {
    bool anyTagged;
-   bool ok = MainPanel_foreachProcess(panel, (MainPanel_ForeachProcessFn) Process_changePriorityBy, delta, &anyTagged);
+   bool ok = MainPanel_foreachProcess(panel, (MainPanel_ForeachProcessFn) Process_changePriorityBy, (Arg){ .i = delta }, &anyTagged);
    if (!ok)
       beep();
    return anyTagged;
@@ -285,7 +285,7 @@ static Htop_Reaction actionSetAffinity(State* st) {
    void* set = Action_pickFromVector(st, affinityPanel, 15);
    if (set) {
       Affinity* affinity = AffinityPanel_getAffinity(affinityPanel, st->pl);
-      bool ok = MainPanel_foreachProcess((MainPanel*)panel, (MainPanel_ForeachProcessFn) Affinity_set, (size_t) affinity, NULL);
+      bool ok = MainPanel_foreachProcess((MainPanel*)panel, (MainPanel_ForeachProcessFn) Affinity_set, (Arg){ .v = affinity }, NULL);
       if (!ok) beep();
       Affinity_delete(affinity);
    }
@@ -302,7 +302,7 @@ static Htop_Reaction actionKill(State* st) {
          Panel_setHeader(st->panel, "Sending...");
          Panel_draw(st->panel, true);
          refresh();
-         MainPanel_foreachProcess((MainPanel*)st->panel, (MainPanel_ForeachProcessFn) Process_sendSignal, (size_t) sgn->key, NULL);
+         MainPanel_foreachProcess((MainPanel*)st->panel, (MainPanel_ForeachProcessFn) Process_sendSignal, (Arg){ .i = sgn->key }, NULL);
          napms(500);
       }
    }
diff --git a/InfoScreen.c b/InfoScreen.c
index dd5095c7f61a8814b2ee791170ce58d0b0d88e3e..fab8daeaf092a5f7eb0294c55329953c05f0b718 100644
--- a/InfoScreen.c
+++ b/InfoScreen.c
@@ -115,8 +115,9 @@ void InfoScreen_run(InfoScreen* this) {
 
       Panel_draw(panel, true);
 
-      if (this->inc->active)
-         move(LINES-1, CRT_cursorX);
+      if (this->inc->active) {
+         (void) move(LINES-1, CRT_cursorX);
+      }
       set_escdelay(25);
       int ch = getch();
       
diff --git a/MainPanel.c b/MainPanel.c
index b5a7e30578ec089e6f7a79bd084be86e86e43fec..25023367f7e80cb59be538430afea31cbb1e33e2 100644
--- a/MainPanel.c
+++ b/MainPanel.c
@@ -25,7 +25,12 @@ typedef struct MainPanel_ {
    pid_t pidSearch;
 } MainPanel;
 
-typedef bool(*MainPanel_ForeachProcessFn)(Process*, size_t);
+typedef union {
+   int i;
+   void* v;
+} Arg;
+
+typedef bool(*MainPanel_ForeachProcessFn)(Process*, Arg);
 
 #define MainPanel_getFunctionBar(this_) (((Panel*)(this_))->defaultBar)
 
@@ -148,7 +153,7 @@ const char* MainPanel_getValue(MainPanel* this, int i) {
    return "";
 }
 
-bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, size_t arg, bool* wasAnyTagged) {
+bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, Arg arg, bool* wasAnyTagged) {
    Panel* super = (Panel*) this;
    bool ok = true;
    bool anyTagged = false;
diff --git a/MainPanel.h b/MainPanel.h
index f4671f330ad85570dedbac1a12e2ac36f7b9949b..884965977ad4b818e729f0adc1f2c872b960cab0 100644
--- a/MainPanel.h
+++ b/MainPanel.h
@@ -21,7 +21,12 @@ typedef struct MainPanel_ {
    pid_t pidSearch;
 } MainPanel;
 
-typedef bool(*MainPanel_ForeachProcessFn)(Process*, size_t);
+typedef union {
+   int i;
+   void* v;
+} Arg;
+
+typedef bool(*MainPanel_ForeachProcessFn)(Process*, Arg);
 
 #define MainPanel_getFunctionBar(this_) (((Panel*)(this_))->defaultBar)
 
@@ -34,7 +39,7 @@ int MainPanel_selectedPid(MainPanel* this);
 
 const char* MainPanel_getValue(MainPanel* this, int i);
 
-bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, size_t arg, bool* wasAnyTagged);
+bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, Arg arg, bool* wasAnyTagged);
 
 extern PanelClass MainPanel_class;
 
diff --git a/OpenFilesScreen.c b/OpenFilesScreen.c
index a772bbac4f3710eb39405794e7cf695aa235161b..f18511bb95e01e94c39dee5fe2baed4baa64e09e 100644
--- a/OpenFilesScreen.c
+++ b/OpenFilesScreen.c
@@ -130,7 +130,7 @@ void OpenFilesScreen_scan(InfoScreen* this) {
          char** data = fdata->data.data;
          int lenN = data['n'] ? strlen(data['n']) : 0;
          int sizeEntry = 5 + 7 + 10 + 10 + 10 + lenN + 5 /*spaces*/ + 1 /*null*/;
-         char* entry = xMalloc(sizeEntry);
+         char entry[sizeEntry];
          xSnprintf(entry, sizeEntry, "%5.5s %7.7s %10.10s %10.10s %10.10s %s",
             data['f'] ? data['f'] : "",
             data['t'] ? data['t'] : "",
diff --git a/Process.c b/Process.c
index 1836080257f27edaf2ce3f105f4735d4bd728766..2ff778dff1e5c530478ac68ac5e1061805f051ad 100644
--- a/Process.c
+++ b/Process.c
@@ -536,11 +536,11 @@ bool Process_setPriority(Process* this, int priority) {
    return (err == 0);
 }
 
-bool Process_changePriorityBy(Process* this, size_t delta) {
+bool Process_changePriorityBy(Process* this, int delta) {
    return Process_setPriority(this, this->nice + delta);
 }
 
-void Process_sendSignal(Process* this, size_t sgn) {
+void Process_sendSignal(Process* this, int sgn) {
    CRT_dropPrivileges();
    kill(this->pid, (int) sgn);
    CRT_restorePrivileges();
diff --git a/Process.h b/Process.h
index 5179bb6f51787d3bd44cab971718509cced85ed5..6c41edc2fdd8cf5400ce6a78980776ca0a6204cb 100644
--- a/Process.h
+++ b/Process.h
@@ -190,9 +190,9 @@ void Process_toggleTag(Process* this);
 
 bool Process_setPriority(Process* this, int priority);
 
-bool Process_changePriorityBy(Process* this, size_t delta);
+bool Process_changePriorityBy(Process* this, int delta);
 
-void Process_sendSignal(Process* this, size_t sgn);
+void Process_sendSignal(Process* this, int sgn);
 
 long Process_pidCompare(const void* v1, const void* v2);
 
diff --git a/TraceScreen.c b/TraceScreen.c
index abef7120f7ac1eba941a0b7b629eb933509731b0..845ceaab992c16c3d0088b07c6f7d200eb880bf3 100644
--- a/TraceScreen.c
+++ b/TraceScreen.c
@@ -108,7 +108,8 @@ bool TraceScreen_forkTracer(TraceScreen* this) {
       (void) written;
       exit(1);
    }
-   fcntl(this->fdpair[0], F_SETFL, O_NONBLOCK);
+   int ok = fcntl(this->fdpair[0], F_SETFL, O_NONBLOCK);
+   if (ok == -1) return false;
    this->strace = fdopen(this->fdpair[0], "r");
    this->fd_strace = fileno(this->strace);
    return true;
diff --git a/linux/Platform.c b/linux/Platform.c
index 025abff69b0cbf6d121e07827bffe5721345d2fc..ab90ca74bd209730b8baa5edf82c2f8a04bcc8fc 100644
--- a/linux/Platform.c
+++ b/linux/Platform.c
@@ -96,7 +96,7 @@ static Htop_Reaction Platform_actionSetIOPriority(State* st) {
    void* set = Action_pickFromVector(st, ioprioPanel, 21);
    if (set) {
       IOPriority ioprio = IOPriorityPanel_getIOPriority(ioprioPanel);
-      bool ok = MainPanel_foreachProcess((MainPanel*)panel, (MainPanel_ForeachProcessFn) LinuxProcess_setIOPriority, (size_t) ioprio, NULL);
+      bool ok = MainPanel_foreachProcess((MainPanel*)panel, (MainPanel_ForeachProcessFn) LinuxProcess_setIOPriority, (Arg){ .i = ioprio }, NULL);
       if (!ok)
          beep();
    }