This patch was tested to build binutils-gdb on GNU/Linux and macOS. It can be applied to the gcc repo too, after fixing some trivial merge conflicts (someone else will need to do it, as I don't have push access to gcc). Although I think it is relatively low-risk, building gcc on macOS was not tested with this patch, so if somebody that has already a macOS build can do it, it would be appreciated.
Two fixes were committed recently to the gettext repo in order to make gdb build warning-free on macOS. This patch backports them both: - Make the format_arg attribute effective also in the case _INTL_REDIRECT_INLINE. 113893dce80358a4ae0d9463ce73c5670c81cf0c http://git.savannah.gnu.org/cgit/gettext.git/commit/?id=113893dce80358a4ae0d9463ce73c5670c81cf0c - Enable the format_arg attribute also on clang on Mac OS X. bd6a52241c7c83c90e043ace2082a2508d273f55 http://git.savannah.gnu.org/cgit/gettext.git/commit/?id=bd6a52241c7c83c90e043ace2082a2508d273f55 intl/ChangeLog: * libgnuintl.h (_INTL_MAY_RETURN_STRING_ARG, gettext, dgettext, dcgettext, ngettext, dngettext, dcngettext): Backport changes from upstream gettext. --- intl/libgnuintl.h | 35 +++++++++++++++++++++++------------ 1 file changed, 23 insertions(+), 12 deletions(-) diff --git a/intl/libgnuintl.h b/intl/libgnuintl.h index acc9093..7616d6f 100644 --- a/intl/libgnuintl.h +++ b/intl/libgnuintl.h @@ -115,7 +115,7 @@ extern "C" { /* _INTL_MAY_RETURN_STRING_ARG(n) declares that the given function may return its n-th argument literally. This enables GCC to warn for example about printf (gettext ("foo %y")). */ -#if __GNUC__ >= 3 && !(__APPLE_CC__ > 1 && defined __cplusplus) +#if defined __GNUC__ && __GNUC__ >= 3 && !(defined __APPLE_CC__ && __APPLE_CC__ > 1 && !(defined __clang__ && __clang__ && __clang_major__ >= 3) && defined __cplusplus) # define _INTL_MAY_RETURN_STRING_ARG(n) __attribute__ ((__format_arg__ (n))) #else # define _INTL_MAY_RETURN_STRING_ARG(n) @@ -127,7 +127,9 @@ extern "C" { #ifdef _INTL_REDIRECT_INLINE extern char *libintl_gettext (const char *__msgid) _INTL_MAY_RETURN_STRING_ARG (1); -static inline char *gettext (const char *__msgid) +static inline +_INTL_MAY_RETURN_STRING_ARG (1) +char *gettext (const char *__msgid) { return libintl_gettext (__msgid); } @@ -145,7 +147,9 @@ extern char *gettext _INTL_PARAMS ((const char *__msgid)) #ifdef _INTL_REDIRECT_INLINE extern char *libintl_dgettext (const char *__domainname, const char *__msgid) _INTL_MAY_RETURN_STRING_ARG (2); -static inline char *dgettext (const char *__domainname, const char *__msgid) +static inline +_INTL_MAY_RETURN_STRING_ARG (2) +char *dgettext (const char *__domainname, const char *__msgid) { return libintl_dgettext (__domainname, __msgid); } @@ -165,8 +169,9 @@ extern char *dgettext _INTL_PARAMS ((const char *__domainname, extern char *libintl_dcgettext (const char *__domainname, const char *__msgid, int __category) _INTL_MAY_RETURN_STRING_ARG (2); -static inline char *dcgettext (const char *__domainname, const char *__msgid, - int __category) +static inline +_INTL_MAY_RETURN_STRING_ARG (2) +char *dcgettext (const char *__domainname, const char *__msgid, int __category) { return libintl_dcgettext (__domainname, __msgid, __category); } @@ -188,8 +193,10 @@ extern char *dcgettext _INTL_PARAMS ((const char *__domainname, extern char *libintl_ngettext (const char *__msgid1, const char *__msgid2, unsigned long int __n) _INTL_MAY_RETURN_STRING_ARG (1) _INTL_MAY_RETURN_STRING_ARG (2); -static inline char *ngettext (const char *__msgid1, const char *__msgid2, - unsigned long int __n) +static inline +_INTL_MAY_RETURN_STRING_ARG (1) _INTL_MAY_RETURN_STRING_ARG (2) +char *ngettext (const char *__msgid1, const char *__msgid2, + unsigned long int __n) { return libintl_ngettext (__msgid1, __msgid2, __n); } @@ -210,8 +217,10 @@ extern char *ngettext _INTL_PARAMS ((const char *__msgid1, extern char *libintl_dngettext (const char *__domainname, const char *__msgid1, const char *__msgid2, unsigned long int __n) _INTL_MAY_RETURN_STRING_ARG (2) _INTL_MAY_RETURN_STRING_ARG (3); -static inline char *dngettext (const char *__domainname, const char *__msgid1, - const char *__msgid2, unsigned long int __n) +static inline +_INTL_MAY_RETURN_STRING_ARG (2) _INTL_MAY_RETURN_STRING_ARG (3) +char *dngettext (const char *__domainname, const char *__msgid1, + const char *__msgid2, unsigned long int __n) { return libintl_dngettext (__domainname, __msgid1, __msgid2, __n); } @@ -234,9 +243,11 @@ extern char *libintl_dcngettext (const char *__domainname, const char *__msgid1, const char *__msgid2, unsigned long int __n, int __category) _INTL_MAY_RETURN_STRING_ARG (2) _INTL_MAY_RETURN_STRING_ARG (3); -static inline char *dcngettext (const char *__domainname, - const char *__msgid1, const char *__msgid2, - unsigned long int __n, int __category) +static inline +_INTL_MAY_RETURN_STRING_ARG (2) _INTL_MAY_RETURN_STRING_ARG (3) +char *dcngettext (const char *__domainname, + const char *__msgid1, const char *__msgid2, + unsigned long int __n, int __category) { return libintl_dcngettext (__domainname, __msgid1, __msgid2, __n, __category); } -- 2.7.4