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Workaround an MSan false positive. 

llvm-svn: 175156
This commit is contained in:
Evgeniy Stepanov 2013-02-14 12:18:32 +00:00
parent 6ad3589964
commit a5b58f9b3b
1 changed files with 2 additions and 0 deletions
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llvm/lib/Support/Unix/Process.inc
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@ -224,6 +224,8 @@ static unsigned getColumns(int FileID) {
#if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_TERMIOS_H) #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_TERMIOS_H)
// Try to determine the width of the terminal. // Try to determine the width of the terminal.
struct winsize ws; struct winsize ws;
// Zero-fill ws to avoid a false positive from MemorySanitizer.
memset(&ws, 0, sizeof(ws));
if (ioctl(FileID, TIOCGWINSZ, &ws) == 0) if (ioctl(FileID, TIOCGWINSZ, &ws) == 0)
Columns = ws.ws_col; Columns = ws.ws_col;
#endif #endif