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conf: cast to unsigned char for character handling function

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Character handling functions, like isspace(3), expect a value
representable as unsigned char or equal to EOF.  Otherwise the behavior
is undefined.

See https://wiki.sei.cmu.edu/confluence/display/c/STR37-C.+Arguments+to+character-handling+functions+must+be+representable+as+an+unsigned+char
This commit is contained in:
Christian Göttsche 2023-08-07 12:46:15 +02:00 committed by Dmitry V. Levin
parent dc9427961a
commit 2770046cd8
1 changed files with 1 additions and 1 deletions
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conf/pam_conv1/pam_conv_y.y
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@ -72,7 +72,7 @@ line
/* make sure we have lower case */ /* make sure we have lower case */
for (i=0; $1[i]; ++i) { for (i=0; $1[i]; ++i) {
$1[i] = tolower($1[i]); $1[i] = tolower((unsigned char)$1[i]);
} }
/* $1 = service-name */ /* $1 = service-name */