libstrat: Allow nullptr buffers if 0 size. (closes #255)

2018-11-04 21:52:26 -08:00
parent 78a47dba6d
commit 3ed239296a
2 changed files with 7 additions and 2 deletions
--- a/stratosphere/fs_mitm/source/fsmitm_layeredrom.cpp
+++ b/stratosphere/fs_mitm/source/fsmitm_layeredrom.cpp
@@ -46,6 +46,11 @@ LayeredRomFS::LayeredRomFS(std::shared_ptr<RomInterfaceStorage> s_r, std::shared


 Result LayeredRomFS::Read(void *buffer, size_t size, u64 offset)  {
+    /* Size zero reads should always succeed. */
+    if (size == 0) {
+        return 0;
+    }
+    
    /* Validate size. */
    u64 virt_size = (*this->p_source_infos)[this->p_source_infos->size() - 1].virtual_offset + (*this->p_source_infos)[this->p_source_infos->size() - 1].size;
    if (offset >= virt_size) {