tavoid potential UB when using isprint() - st - [fork] customized build of st, … | |
git clone git://src.adamsgaard.dk/st | |
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--- | |
commit af3bb68add1c40d19d0dee382009e21b0870a38f | |
parent 2aefa348baf4b702fdce98eb105bcba175d8283f | |
Author: NRK <[email protected]> | |
Date: Fri, 18 Mar 2022 16:20:54 +0600 | |
avoid potential UB when using isprint() | |
all the ctype.h functions' argument must be representable as an unsigned | |
char or as EOF, otherwise the behavior is undefined. | |
Diffstat: | |
M st.c | 2 +- | |
1 file changed, 1 insertion(+), 1 deletion(-) | |
--- | |
diff --git a/st.c b/st.c | |
t@@ -367,7 +367,7 @@ static const char base64_digits[] = { | |
char | |
base64dec_getc(const char **src) | |
{ | |
- while (**src && !isprint(**src)) | |
+ while (**src && !isprint((unsigned char)**src)) | |
(*src)++; | |
return **src ? *((*src)++) : '='; /* emulate padding if string ends */ | |
} |