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* libpam/include/pam_cc_compat.h (DIAG_PUSH_IGNORE_FORMAT_NONLITERAL,
DIAG_POP_IGNORE_FORMAT_NONLITERAL): New macros.
* libpam/pam_handlers.c (_pam_open_config_file): Use them to exempt
usage of format string literals from a constant array.
* m4/warn_lang_flags.m4 (gl_WARN_ADD): Add -Wformat=2.
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Introduce a new internal header file for definitions of handly inline
functions and macros providing some convenient functionality to libpam
and its modules.
* libpam/include/pam_cc_compat.h (PAM_SAME_TYPE): New macro.
* libpam/include/pam_inline.h: New file.
* libpam/Makefile.am (noinst_HEADERS): Add include/pam_inline.h.
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Introduce DIAG_PUSH_IGNORE_CAST_ALIGN and DIAG_POP_IGNORE_CAST_ALIGN
macros, use them to silence remaining clang -Wcast-align compilation
warnings.
* libpam/include/pam_cc_compat.h (DIAG_PUSH_IGNORE_CAST_ALIGN,
DIAG_POP_IGNORE_CAST_ALIGN): New macros.
* modules/pam_access/pam_access.c: Include "pam_cc_compat.h".
(from_match, network_netmask_match): Wrap inet_ntop invocations
in DIAG_PUSH_IGNORE_CAST_ALIGN and DIAG_POP_IGNORE_CAST_ALIGN.
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Unlike gcc, clang is not smart enough to infer the alignment
of structure fields, so add some alignment hints to the code.
* libpam/include/pam_cc_compat.h (PAM_ATTRIBUTE_ALIGNED): New macro.
* modules/pam_namespace/md5.h: Include "pam_cc_compat.h".
(struct MD5Context): Add PAM_ATTRIBUTE_ALIGNED to "in" field.
* modules/pam_namespace/md5.c [!(__i386__ || __x86_64__)]
(uint8_aligned): New type.
[!(__i386__ || __x86_64__)] (byteReverse): Use it instead of
unsigned char.
* modules/pam_timestamp/sha1.h: Include "pam_cc_compat.h".
(struct sha1_context): Add PAM_ATTRIBUTE_ALIGNED to pending field.
* modules/pam_unix/md5.h: Include "pam_cc_compat.h".
(struct MD5Context): Add PAM_ATTRIBUTE_ALIGNED to "in" field.
* modules/pam_unix/md5.c [!HIGHFIRST] (uint8_aligned): New type.
[!HIGHFIRST] (byteReverse): Use it instead of unsigned char.
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Introduce a new internal header file with definitions of
DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL macros,
use them to temporary silence -Wcast-qual compilation warnings
in various modules.
* libpam/include/pam_cc_compat.h: New file.
* libpam/Makefile.am (noinst_HEADERS): Add include/pam_cc_compat.h.
* modules/pam_mkhomedir/pam_mkhomedir.c: Include "pam_cc_compat.h".
(create_homedir): Wrap execve invocation in DIAG_PUSH_IGNORE_CAST_QUAL
and DIAG_POP_IGNORE_CAST_QUAL.
* modules/pam_namespace/pam_namespace.c: Include "pam_cc_compat.h".
(pam_sm_close_session): Wrap the cast that discards ‘const’ qualifier
in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL.
* modules/pam_tty_audit/pam_tty_audit.c: Include "pam_cc_compat.h".
(nl_send): Wrap the cast that discards ‘const’ qualifier in
DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL.
* modules/pam_unix/pam_unix_acct.c: Include "pam_cc_compat.h".
(_unix_run_verify_binary): Wrap execve invocation in
DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL.
* modules/pam_unix/pam_unix_passwd.c: Include "pam_cc_compat.h".
(_unix_run_update_binary): Wrap execve invocation in
DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL.
* modules/pam_unix/passverify.c: Include "pam_cc_compat.h".
(unix_update_shadow): Wrap the cast that discards ‘const’ qualifier
in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL.
* modules/pam_unix/support.c: Include "pam_cc_compat.h".
(_unix_run_helper_binary): Wrap execve invocation in
DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL.
* modules/pam_xauth/pam_xauth.c: Include "pam_cc_compat.h".
(run_coprocess): Wrap execv invocation in DIAG_PUSH_IGNORE_CAST_QUAL
and DIAG_POP_IGNORE_CAST_QUAL.
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