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fix undefined behaviour of use of isalpha, isdigit and tolower - ii - irc it, s… |
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git clone git://git.suckless.org/ii |
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--- |
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commit 1411224b169b5a2d134111b068e17f3020753ca9 |
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parent bf06f141882477d60a9d30390dd9e43a49fccc11 |
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Author: Hiltjo Posthuma <[email protected]> |
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Date: Mon, 16 Dec 2019 18:26:01 +0100 |
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fix undefined behaviour of use of isalpha, isdigit and tolower |
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"The argument c must be EOF or representable as an unsigned char; |
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otherwise, the result is undefined." |
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Diffstat: |
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M ii.c | 6 +++--- |
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1 file changed, 3 insertions(+), 3 deletions(-) |
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--- |
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diff --git a/ii.c b/ii.c |
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@@ -140,9 +140,9 @@ static void |
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channel_normalize_path(char *s) |
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{ |
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for (; *s; s++) { |
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- if (isalpha(*s)) |
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- *s = tolower(*s); |
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- else if (!isdigit(*s) && !strchr(".#&+!-", *s)) |
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+ if (isalpha((unsigned char)*s)) |
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+ *s = tolower((unsigned char)*s); |
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+ else if (!isdigit((unsigned char)*s) && !strchr(".#&+!-", *s)) |
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*s = '_'; |
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} |
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} |
