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Re: many unused function warnings in gdb 7.9 on darwin
- From: Pedro Alves <palves at redhat dot com>
- To: Jack Howarth <howarth dot mailing dot lists at gmail dot com>, gdb at sourceware dot org
- Date: Thu, 26 Feb 2015 10:17:56 +0000
- Subject: Re: many unused function warnings in gdb 7.9 on darwin
- Authentication-results: sourceware.org; auth=none
- References: <CADtEn-0a2XqyNySrYL-OrC=yYvBs_uuVFNnJE5KdHt_-7FHsaA at mail dot gmail dot com>
On 02/24/2015 04:33 PM, Jack Howarth wrote:
> Building the gdb 7.9 release on x86_64-apple-darwin14 produces many
> warnings of the form...
> remote.c:2567:1: warning: unused function
> 'VEC_thread_item_t_embedded_size' [-Wunused-function]
> ./common/vec.h:435:20: note: expanded from macro 'DEF_VEC_O'
> VEC_T(T); \
> ./common/vec.h:863:22: note: expanded from macro '\
> static inline size_t VEC_OP (T,embedded_size) \
> ./common/vec.h:399:22: note: expanded from macro 'VEC_OP'
> #define VEC_OP(T,OP) VEC_##T##_##OP
> <scratch space>:55:1: note: expanded from here
> Shouldn't those VEC declarations use a wrapper to avoid them on
> targets not supporting that code?
AFAIK, -Wunused-function is supposed to be suppressed for
"static inline" functions:
Warn whenever a static function is declared but not defined
or a non-inline static function is unused. This warning is
enabled by -Wall.
Looks like a clang bug here?
(I suspect marking the function with attribute used would
work around this.)