Make fbstring libgcc-safe

[folly.git] / folly / Portability.h

diff --git a/folly/Portability.h b/folly/Portability.h
index a29862c35a770044c71a522a3c41f4c6dfd52da2..68d7d969e9d8e4eb19274e3adb84258a241dff07 100644 (file)
--- a/folly/Portability.h
+++ b/folly/Portability.h
@@ -45,6 +45,21 @@ struct MaxAlign { char c; } __attribute__((aligned));
 // compiler specific attribute translation
 // msvc should come first, so if clang is in msvc mode it gets the right defines
 
+// NOTE: this will only do checking in msvc with versions that support /analyze
+#if _MSC_VER
+# ifdef _USE_ATTRIBUTES_FOR_SAL
+#    undef _USE_ATTRIBUTES_FOR_SAL
+# endif
+# define _USE_ATTRIBUTES_FOR_SAL 1
+# include <sal.h>
+# define FOLLY_PRINTF_FORMAT _Printf_format_string_
+# define FOLLY_PRINTF_FORMAT_ATTR(format_param, dots_param) /**/
+#else
+# define FOLLY_PRINTF_FORMAT /**/
+# define FOLLY_PRINTF_FORMAT_ATTR(format_param, dots_param) \
+  __attribute__((format(printf, format_param, dots_param)))
+#endif
+
 // noreturn
 #if defined(_MSC_VER)
 # define FOLLY_NORETURN __declspec(noreturn)
@@ -188,4 +203,24 @@ struct MaxAlign { char c; } __attribute__((aligned));
 #endif
 #endif // __cplusplus
 
+// MSVC specific defines
+// mainly for posix compat
+#ifdef _MSC_VER
+
+// this definition is in a really silly place with a silly name
+// and ifdefing it every time we want it is painful
+#include <basetsd.h>
+typedef SSIZE_T ssize_t;
+
+// sprintf semantics are not exactly identical
+// but current usage is not a problem
+# define snprintf _snprintf
+
+// semantics here are identical
+# define strerror_r(errno,buf,len) strerror_s(buf,len,errno)
+
+// compiler specific to compiler specific
+# define __PRETTY_FUNCTION__ __FUNCSIG__
+#endif
+
 #endif // FOLLY_PORTABILITY_H_