commit 399a6f09ff051988e2e840185ad1f7f5b8a2adce
author Pau Espin Pedrol <pespin@sysmocom.de> Sun Jun 18 14:07:37 2017 +0200
committer Pau Espin Pedrol <pespin@sysmocom.de> Fri Jun 23 10:21:54 2017 +0200
tree 52e2ef27a1576b71c74c358bcfc5c0554df21ea0
parent 4573502a1c0c84949d7195a9ea3ee8996bb29c0f

Fix warnings: tolower() and similar require uchar

utils.c: In function 'osmo_str2lower':
utils.c:277:3: warning: array subscript has type 'char' [-Wchar-subscripts]
       out[i] = tolower(in[i]);

And according to man:
If c is neither an unsigned char value nor EOF, the behavior of these func‐
tions is undefined.

Change-Id: I3fed2ab6a4efba9f8a21fcf84a5b3a91e8df084f

src/utils.c

diff --git a/src/utils.c b/src/utils.c
index a1881f0..1c176f8 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -274,7 +274,7 @@
 	unsigned int i;
 
 	for (i = 0; i < strlen(in); i++)
-		out[i] = tolower(in[i]);
+		out[i] = tolower((const unsigned char)in[i]);
 	out[strlen(in)] = '\0';
 }
 
@@ -287,7 +287,7 @@
 	unsigned int i;
 
 	for (i = 0; i < strlen(in); i++)
-		out[i] = toupper(in[i]);
+		out[i] = toupper((const unsigned char)in[i]);
 	out[strlen(in)] = '\0';
 }
 #endif /* HAVE_CTYPE_H */