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avoid potential UB when using isprint() - st - simple terminal |
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git clone git://git.suckless.org/st |
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--- |
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commit af3bb68add1c40d19d0dee382009e21b0870a38f |
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parent 2aefa348baf4b702fdce98eb105bcba175d8283f |
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Author: NRK <[email protected]> |
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Date: Fri, 18 Mar 2022 16:20:54 +0600 |
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avoid potential UB when using isprint() |
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all the ctype.h functions' argument must be representable as an unsigned |
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char or as EOF, otherwise the behavior is undefined. |
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Diffstat: |
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M st.c | 2 +- |
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1 file changed, 1 insertion(+), 1 deletion(-) |
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--- |
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diff --git a/st.c b/st.c |
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@@ -367,7 +367,7 @@ static const char base64_digits[] = { |
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char |
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base64dec_getc(const char **src) |
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{ |
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- while (**src && !isprint(**src)) |
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+ while (**src && !isprint((unsigned char)**src)) |
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(*src)++; |
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return **src ? *((*src)++) : '='; /* emulate padding if string ends */ |
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} |
