From ab6e9d3b86eb5c3793541f12705622c6c61ad4fb Mon Sep 17 00:00:00 2001 From: Lynix Date: Fri, 10 Feb 2017 15:20:43 +0100 Subject: [PATCH] Core/String: Fix FormatVA bug --- src/Nazara/Core/String.cpp | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/src/Nazara/Core/String.cpp b/src/Nazara/Core/String.cpp index a0bca5d64..7ea8c7df2 100644 --- a/src/Nazara/Core/String.cpp +++ b/src/Nazara/Core/String.cpp @@ -5102,10 +5102,14 @@ namespace Nz */ String String::FormatVA(const char* format, va_list args) { + // Copy va_list to use it twice + va_list args2; + va_copy(args2, args); + std::size_t length = std::vsnprintf(nullptr, 0, format, args); auto str = std::make_shared(length); - std::vsnprintf(str->string.get(), length + 1, format, args); + std::vsnprintf(str->string.get(), length + 1, format, args2); return String(std::move(str)); }