Author: compnerd
Date: Fri Jan 6 23:13:32 2017
New Revision: 291336
URL: http://llvm.org/viewvc/llvm-project?rev=291336&view=rev
Log:
system_error: correct ELAST emulation on Windows
ELAST should point to the last valid error string value. However,
`_sys_nerr` provides the number of elements in the errlist array. Since
the index is 0-based, this is off-by-one. Adjust it accordingly.
Thanks to David Majnemer for catching this!
Modified:
libcxx/trunk/src/include/config_elast.h
Modified: libcxx/trunk/src/include/config_elast.h
URL:
http://llvm.org/viewvc/llvm-project/libcxx/trunk/src/include/config_elast.h?rev=291336&r1=291335&r2=291336&view=diff
==============================================================================
--- libcxx/trunk/src/include/config_elast.h (original)
+++ libcxx/trunk/src/include/config_elast.h Fri Jan 6 23:13:32 2017
@@ -31,7 +31,7 @@
#elif defined(__sun__)
#define _LIBCPP_ELAST ESTALE
#elif defined(_LIBCPP_MSVCRT)
-#define _LIBCPP_ELAST _sys_nerr
+#define _LIBCPP_ELAST (_sys_nerr - 1)
#else
// Warn here so that the person doing the libcxx port has an easier time:
#warning ELAST for this platform not yet implemented
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