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Common/StringUtil: Fix more incorrect usage of va_list

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This commit is contained in:
Connor McLaughlin 2020-02-03 13:53:08 +10:00
parent 899a8e0f03
commit 4eadc07629
2 changed files with 10 additions and 3 deletions
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5
src/common/string.cpp
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@ -328,7 +328,10 @@ void String::AppendFormattedStringVA(const char* FormatString, va_list ArgPtr)
for (;;) for (;;)
{ {
int ret = std::vsnprintf(pBuffer, currentBufferSize, FormatString, ArgPtr); va_list ArgPtrCopy;
va_copy(ArgPtrCopy, ArgPtr);
int ret = std::vsnprintf(pBuffer, currentBufferSize, FormatString, ArgPtrCopy);
va_end(ArgPtrCopy);
if (ret < 0 || ((u32)ret >= (currentBufferSize - 1))) if (ret < 0 || ((u32)ret >= (currentBufferSize - 1)))
{ {
currentBufferSize *= 2; currentBufferSize *= 2;

8
src/common/string_util.cpp
View file

@ -14,11 +14,15 @@ std::string StdStringFromFormat(const char* format, ...)
std::string StdStringFromFormatV(const char* format, std::va_list ap) std::string StdStringFromFormatV(const char* format, std::va_list ap)
{ {
std::va_list ap_copy;
va_copy(ap_copy, ap);
#ifdef WIN32 #ifdef WIN32
int len = _vscprintf(format, ap); int len = _vscprintf(format, ap_copy);
#else #else
int len = std::vsnprintf(nullptr, 0, format, ap); int len = std::vsnprintf(nullptr, 0, format, ap_copy);
#endif #endif
va_end(ap_copy);
std::string ret; std::string ret;
ret.resize(len); ret.resize(len);