Fixes #5769 (#5775)

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

1 files changed, 19 insertions, 1 deletions

diff --git a/src/resolver/resolve_path.zig b/src/resolver/resolve_path.zig
index f74211709..381abc648 100644
--- a/src/resolver/resolve_path.zig
+++ b/src/resolver/resolve_path.zig
@@ -829,7 +829,25 @@ pub fn joinStringBuf(buf: []u8, _parts: anytype, comptime _platform: Platform) [
 
     var written: usize = 0;
     const platform = comptime _platform.resolve();
-    var temp_buf: [4096]u8 = undefined;
+    var temp_buf_: [4096]u8 = undefined;
+    var temp_buf: []u8 = &temp_buf_;
+    var free_temp_buf = false;
+    defer {
+        if (free_temp_buf) {
+            bun.default_allocator.free(temp_buf);
+        }
+    }
+
+    var count: usize = 0;
+    for (_parts) |part| {
+        count += if (part.len > 0) part.len + 1 else 0;
+    }
+
+    if (count * 2 > temp_buf.len) {
+        temp_buf = bun.default_allocator.alloc(u8, count * 2) catch @panic("Out of memory");
+        free_temp_buf = true;
+    }
+
     temp_buf[0] = 0;
 
     for (_parts) |part| {