From 6e7d4efab4e3b35a68dfd5cfbeda6373b86520ff Mon Sep 17 00:00:00 2001
From: Syndamia <kamen@syndamia.com>
Date: Tue, 21 Apr 2026 21:34:21 +0300
Subject: fix(String): Handle out of memory condition

---
 String.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/String.c b/String.c
index 31b5139..602d854 100644
--- a/String.c
+++ b/String.c
@@ -26,6 +26,8 @@ S_new(BumpArena b, const char* str) {
     };
 
     void* start = B_alloc(b, sizeof(sm) + sm.length + 1);
+    if (NULL == start)
+        return NULL;
 
     memcpy(start, &sm, sizeof(sm));
     start += sizeof(sm);
@@ -45,6 +47,8 @@ S_newlen(BumpArena b, usize length) {
     };
 
     void* start = B_alloc(b, sizeof(sm) + sm.length + 1);
+    if (NULL == start)
+        return NULL;
 
     memcpy(start, &sm, sizeof(sm));
     start += sizeof(sm);
@@ -66,6 +70,9 @@ S_dup(BumpArena b, String s) {
     usize allocated = S_allocated(s);
 
     void* start = B_alloc(b, allocated);
+    if (NULL == start)
+        return NULL;
+
     memcpy(start, s - sizeof(struct StringMeta), allocated);
 
     return NULL;
@@ -80,7 +87,7 @@ S_length(String s) {
 
 Result
 S_append(String s, const char* str) {
-    if (NULL == s)
+    if (NULL == s || NULL == str)
         return R_Uninitialized;
 
     struct StringMeta* sm = S_metadata(s);
@@ -142,6 +149,9 @@ S_vconcat(BumpArena b, va_list args) {
 
     String result = S_newlen(b, length);
 
+    if (NULL == result)
+        return result;
+
     if (0 < length) {
         for (const char* str = va_arg(args, const char*); str != NULL; str = va_arg(args, const char*))
             strncat(result, str, length);
@@ -169,8 +179,10 @@ S_vprintf(BumpArena b, const char* fmt, va_list args) {
     va_end(temp);
 
     String result = S_newlen(b, length);
-    vsnprintf(result, length + 1, fmt, args);
+    if (NULL == result)
+        return NULL;
 
+    vsnprintf(result, length + 1, fmt, args);
     return result;
 }
 
-- 
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