fix compiler warning: conversion may lose significant bits

1 files changed, 8 insertions, 11 deletions

diff --git a/lib/ssh.c b/lib/ssh.c
index 52cf5ad98..d432b4ec4 100644
--- a/lib/ssh.c
+++ b/lib/ssh.c
@@ -101,6 +101,7 @@
 #include "strtoofft.h"
 #include "multiif.h"
 #include "select.h"
+#include "warnless.h"
 
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
@@ -1541,21 +1542,17 @@ static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
           /* seekerr == CURL_SEEKFUNC_CANTSEEK (can't seek to offset) */
           else {
             curl_off_t passed=0;
-            curl_off_t readthisamountnow;
-            curl_off_t actuallyread;
             do {
-              readthisamountnow = (data->state.resume_from - passed);
+              size_t readthisamountnow =
+                (data->state.resume_from - passed > CURL_OFF_T_C(BUFSIZE)) ?
+                BUFSIZE : curlx_sotouz(data->state.resume_from - passed);
 
-              if(readthisamountnow > BUFSIZE)
-                readthisamountnow = BUFSIZE;
-
-              actuallyread =
-                (curl_off_t) conn->fread_func(data->state.buffer, 1,
-                                              (size_t)readthisamountnow,
-                                              conn->fread_in);
+              size_t actuallyread =
+                conn->fread_func(data->state.buffer, 1, readthisamountnow,
+                                 conn->fread_in);
 
               passed += actuallyread;
-              if((actuallyread <= 0) || (actuallyread > readthisamountnow)) {
+              if((actuallyread == 0) || (actuallyread > readthisamountnow)) {
                 /* this checks for greater-than only to make sure that the
                    CURL_READFUNC_ABORT return code still aborts */
                 failf(data, "Failed to read data");