From d794018606dfdb62f87adf065c5ba48a4607d92b Mon Sep 17 00:00:00 2001 From: Tom Sepez Date: Fri, 10 Apr 2015 14:43:15 -0700 Subject: Better fix for snprintf non-termination on windows. Replaces https://codereview.chromium.org/1062983002/ BUG=469244 R=brucedawson@chromium.org Review URL: https://codereview.chromium.org/1077903002 --- core/include/fxcrt/fx_system.h | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) (limited to 'core/include/fxcrt') diff --git a/core/include/fxcrt/fx_system.h b/core/include/fxcrt/fx_system.h index a875da5f9c..d030bf70d6 100644 --- a/core/include/fxcrt/fx_system.h +++ b/core/include/fxcrt/fx_system.h @@ -34,8 +34,9 @@ #endif #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ #define _CRT_SECURE_NO_WARNINGS +#include #include -#endif +#endif // _FXM_PLATFORM_WINDOWS_ #define _FX_W32_ 1 #define _FX_W64_ 2 #ifndef _FX_WORDSIZE_ @@ -137,13 +138,18 @@ typedef FX_UINT64 FX_QWORD; #define FX_MAX(a, b) (((a) > (b)) ? (a) : (b)) #define FX_MIN(a, b) (((a) < (b)) ? (a) : (b)) #define FX_PI 3.1415926535897932384626433832795f -#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ -#define FXSYS_snprintf _snprintf -#define FXSYS_vsnprintf _vsnprintf + +// NOTE: prevent use of the return value from snprintf() since some platforms +// have different return values (e.g. windows _vsnprintf()), and provide +// versions that always NUL-terminate. +#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ && _MSC_VER < 1900 +void FXSYS_snprintf(char *str, size_t size, _Printf_format_string_ const char* fmt, ...); +void FXSYS_vsnprintf(char *str, size_t size, const char* fmt, va_list ap); #else -#define FXSYS_snprintf snprintf -#define FXSYS_vsnprintf vsnprintf +#define FXSYS_snprintf (void) snprintf +#define FXSYS_vsnprintf (void) vsnprintf #endif + #define FXSYS_sprintf DO_NOT_USE_SPRINTF_DIE_DIE_DIE #define FXSYS_vsprintf DO_NOT_USE_VSPRINTF_DIE_DIE_DIE #define FXSYS_strchr strchr -- cgit v1.2.3