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| author | Christian Göttsche <cgzones@googlemail.com> | 2023-08-07 12:46:40 +0200 |
|---|---|---|
| committer | Dmitry V. Levin <ldv@strace.io> | 2023-08-07 10:46:40 +0000 |
| commit | 43abfff43537092e20bc129f8208d082e73aff1a (patch) | |
| tree | 0a474a6ecf44fd9b0090d75f0f528fb9b55e62ce /modules/pam_unix/support.c | |
| parent | 4020ca8c0fe3ac88eccc5c62aa8d8c63a4043578 (diff) | |
| download | pam-43abfff43537092e20bc129f8208d082e73aff1a.tar.gz pam-43abfff43537092e20bc129f8208d082e73aff1a.tar.bz2 pam-43abfff43537092e20bc129f8208d082e73aff1a.zip | |
modules: cast to unsigned char for character handling function
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
Diffstat (limited to 'modules/pam_unix/support.c')
| -rw-r--r-- | modules/pam_unix/support.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/modules/pam_unix/support.c b/modules/pam_unix/support.c index 7bed0a56..a84ced60 100644 --- a/modules/pam_unix/support.c +++ b/modules/pam_unix/support.c @@ -327,7 +327,7 @@ int _unix_getpwnam(pam_handle_t *pamh, const char *name, if ((buf[userlen] == ':') && (strncmp(name, buf, userlen) == 0)) { p = buf + strlen(buf) - 1; - while (isspace(*p) && (p >= buf)) { + while (isspace((unsigned char)*p) && (p >= buf)) { *p-- = '\0'; } matched = 1; |