diff --git a/src/pxl8_io.h b/src/pxl8_io.h
index a0e3635..3d1d1c4 100644
--- a/src/pxl8_io.h
+++ b/src/pxl8_io.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <stdio.h>
+#include <string.h>
 #include <sys/stat.h>
 
 #include "pxl8_types.h"
@@ -60,7 +61,9 @@ static inline i32 pxl8_read_i32(pxl8_stream* stream) {
 
 static inline f32 pxl8_read_f32(pxl8_stream* stream) {
     u32 val = pxl8_read_u32(stream);
-    return *(f32*)&val;
+    f32 result;
+    memcpy(&result, &val, sizeof(f32));
+    return result;
 }
 
 static inline void pxl8_read_bytes(pxl8_stream* stream, void* dest, u32 count) {
diff --git a/src/pxl8_procgen.c b/src/pxl8_procgen.c
index 2397a03..b91f9cf 100644
--- a/src/pxl8_procgen.c
+++ b/src/pxl8_procgen.c
@@ -467,12 +467,12 @@ void pxl8_procgen_tex(u8* buffer, const pxl8_procgen_tex_params* params) {
             i32 ix = (i32)((f32)x * params->scale);
             i32 iy = (i32)((f32)y * params->scale);
 
-            u32 block_hash = (ix * 374761393 + iy * 668265263) ^ params->seed;
+            u32 block_hash = ((u32)ix * 374761393u + (u32)iy * 668265263u) ^ params->seed;
             block_hash ^= block_hash >> 13;
             block_hash ^= block_hash << 17;
             block_hash ^= block_hash >> 5;
 
-            u32 pixel_hash = (x * 1597334677 + y * 3812015801) ^ params->seed;
+            u32 pixel_hash = ((u32)x * 1597334677u + (u32)y * 3812015801u) ^ params->seed;
             pixel_hash ^= pixel_hash >> 13;
             pixel_hash ^= pixel_hash << 17;
             pixel_hash ^= pixel_hash >> 5;
diff --git a/src/pxl8_script.c b/src/pxl8_script.c
index 3192ea8..df3de4a 100644
--- a/src/pxl8_script.c
+++ b/src/pxl8_script.c
@@ -18,7 +18,7 @@ struct pxl8_script {
     pxl8_gfx* gfx;
     pxl8_input_state* input;
     pxl8_ui* ui;
-    char last_error[1024];
+    char last_error[2048];
     char main_path[256];
     char watch_dir[256];
     time_t latest_mod_time;
@@ -56,7 +56,7 @@ static void pxl8_script_repl_promote_locals(const char* input, char* output, siz
 
         if (!in_string && input[i] == '(' &&
             strncmp(&input[i], "(local ", 7) == 0) {
-            strncpy(&output[j], "(global ", 8);
+            memcpy(&output[j], "(global ", 8);
             j += 8;
             i += 7;
             continue;
@@ -847,8 +847,10 @@ static void* pxl8_script_repl_stdin_thread(void* user_data) {
 
             u32 next_tail = (repl->tail + 1) % PXL8_REPL_RING_BUFFER_SIZE;
             if (next_tail != repl->head) {
-                strncpy(repl->ring_buffer[repl->tail].buffer, repl->accumulator, PXL8_MAX_REPL_COMMAND_SIZE - 1);
-                repl->ring_buffer[repl->tail].buffer[PXL8_MAX_REPL_COMMAND_SIZE - 1] = '\0';
+                size_t len = strlen(repl->accumulator);
+                size_t copy_len = len < PXL8_MAX_REPL_COMMAND_SIZE - 1 ? len : PXL8_MAX_REPL_COMMAND_SIZE - 1;
+                memcpy(repl->ring_buffer[repl->tail].buffer, repl->accumulator, copy_len);
+                repl->ring_buffer[repl->tail].buffer[copy_len] = '\0';
                 repl->tail = next_tail;
                 repl->waiting_for_eval = true;