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save errno in sys_error()

the print functions prior to perror() might otherwise clobber it.
1.4
Oswald Buddenhagen 4 years ago
parent
commit
e295f483d9
  1. 3
      src/util.c

3
src/util.c

@ -27,6 +27,7 @@
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <ctype.h>
#include <pwd.h>
@ -154,9 +155,11 @@ vsys_error( const char *msg, va_list va )
{
char buf[1024];
int errno_bak = errno;
flushn();
if ((uint)vsnprintf( buf, sizeof(buf), msg, va ) >= sizeof(buf))
oob();
errno = errno_bak;
perror( buf );
}

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