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-rw-r--r--src/nsimage.m3
1 files changed, 1 insertions, 2 deletions
diff --git a/src/nsimage.m b/src/nsimage.m
index 1479294948..8a8a3ddaae 100644
--- a/src/nsimage.m
+++ b/src/nsimage.m
@@ -302,7 +302,7 @@ static EmacsImage *ImageList = nil;
[bmRep release];
return nil;
}
-#define hexchar(x) (isdigit (x) ? x - '0' : x - 'a' + 10)
+#define hexchar(x) ('0' <= (x) && (x) <= '9' ? (x) - '0' : (x) - 'a' + 10)
s1 = *s++;
s2 = *s++;
c = hexchar (s1) * 0x10 + hexchar (s2);
@@ -501,4 +501,3 @@ static EmacsImage *ImageList = nil;
}
@end
-