Add check in fgetcsv in case sizeof(unit) != sizeof(size_t)

diff --git a/ext/standard/file.c b/ext/standard/file.c
index 440276ab6e9284d0fd2b2eff2b2f7e487bbc06bc..067f9614eb8c5fdc011e8b5abbec946997368a8f 100644 (file)
--- a/ext/standard/file.c
+++ b/ext/standard/file.c
@@ -2301,6 +2301,10 @@ PHPAPI void php_fgetcsv(php_stream *stream, char delimiter, char enclosure, char
 
                /* 3. Now pass our field back to php */
                *comp_end = '\0';
+               if (UNEXPECTED((comp_end - temp) > INT_MAX)) {
+                       zend_error_noreturn(E_WARNING, "String overflow, max size is %d", INT_MAX);
+                       break;
+               }
                add_next_index_stringl(return_value, temp, comp_end - temp, 1);
        } while (inc_len > 0);