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-rw-r--r--mdk-stage1/dietlibc/liblatin1/latin1-islower.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mdk-stage1/dietlibc/liblatin1/latin1-islower.c b/mdk-stage1/dietlibc/liblatin1/latin1-islower.c
index cab1a5171..c5ad18d1e 100644
--- a/mdk-stage1/dietlibc/liblatin1/latin1-islower.c
+++ b/mdk-stage1/dietlibc/liblatin1/latin1-islower.c
@@ -1,5 +1,6 @@
#include <ctype.h>
int islower(int c) {
- return (c>='a' && c<='z') || (c>=223 && c<=255 && c!=247);
+ unsigned char x=c&0xff;
+ return (x>='a' && x<='z') || (x>=223 && x<=255 && x!=247);
}