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authorndesaulniers@google.com <ndesaulniers@google.com>2018-10-22 16:43:57 -0700
committerJames Morris <james.morris@microsoft.com>2019-04-08 15:58:54 -0700
commitbe24b37e22c20cbaa891971616784dd0f35211e8 (patch)
tree5871e442afe23bab7f4969fc154c1f75efb27e60 /tools
parenttpm: Fix the type of the return value in calc_tpm2_event_size() (diff)
downloadlinux-dev-be24b37e22c20cbaa891971616784dd0f35211e8.tar.xz
linux-dev-be24b37e22c20cbaa891971616784dd0f35211e8.zip
KEYS: trusted: fix -Wvarags warning
Fixes the warning reported by Clang: security/keys/trusted.c:146:17: warning: passing an object that undergoes default argument promotion to 'va_start' has undefined behavior [-Wvarargs] va_start(argp, h3); ^ security/keys/trusted.c:126:37: note: parameter of type 'unsigned char' is declared here unsigned char *h2, unsigned char h3, ...) ^ Specifically, it seems that both the C90 (4.8.1.1) and C11 (7.16.1.4) standards explicitly call this out as undefined behavior: The parameter parmN is the identifier of the rightmost parameter in the variable parameter list in the function definition (the one just before the ...). If the parameter parmN is declared with ... or with a type that is not compatible with the type that results after application of the default argument promotions, the behavior is undefined. Link: https://github.com/ClangBuiltLinux/linux/issues/41 Link: https://www.eskimo.com/~scs/cclass/int/sx11c.html Suggested-by: David Laight <David.Laight@aculab.com> Suggested-by: Denis Kenzior <denkenz@gmail.com> Suggested-by: James Bottomley <jejb@linux.vnet.ibm.com> Suggested-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Tested-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: James Morris <james.morris@microsoft.com>
Diffstat (limited to 'tools')
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