rtsSysErrorMsgFn() for Windows GUI app calls vsnprintf() erroneously
Hi, this is a bug I noticed when reading through the code. I haven't actually experienced the bug, and don't have steps to reproduce.
In the function rtsSysErrorMsgFn()
in the file rts/RtsMessages.c
, there is the line:
r = vsnprintf(buf+r, BUFSIZE-r, ": %s", syserr);
(In the ghc-8.10.2 tarball, this is line 251 of rts/RtsMessages.c
.)
I'm pretty sure that line should instead be:
r = snprintf(buf+r, BUFSIZE-r, ": %s", syserr);
because syserr
is a string, not a va_list
.