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-rw-r--r--lib/url.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/url.c b/lib/url.c
index 078b74c47..87d1685f2 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -2326,7 +2326,7 @@ static CURLcode CreateConnection(struct SessionHandle *data,
/* Now, build <protocol>_proxy and check for such a one to use */
while(*protop)
- *envp++ = tolower(*protop++);
+ *envp++ = tolower((int)*protop++);
/* append _proxy */
strcpy(envp, "_proxy");
@@ -2349,7 +2349,7 @@ static CURLcode CreateConnection(struct SessionHandle *data,
if(!prox && !strequal("http_proxy", proxy_env)) {
/* There was no lowercase variable, try the uppercase version: */
for(envp = proxy_env; *envp; envp++)
- *envp = toupper(*envp);
+ *envp = toupper((int)*envp);
prox=curl_getenv(proxy_env);
}
@@ -2578,7 +2578,7 @@ static CURLcode CreateConnection(struct SessionHandle *data,
if(type) {
char command;
*type=0; /* it was in the middle of the hostname */
- command = toupper(type[6]);
+ command = toupper((int)type[6]);
switch(command) {
case 'A': /* ASCII mode */
data->set.ftp_ascii = 1;