I'm trying to build a release on amd64 using
HAVE_MESA_VER=21
HAVE_GCC=12
and get the following build error which I am puzzled by:
inlined from 'r300_merge_textures_and_samplers' at
/usr/xsrc/external/mit/MesaLib/dist/src/gallium/drivers/r300/r300_state_derived.c:823:17,
inlined from 'r300_update_derived_state' at
/usr/xsrc/external/mit/MesaLib/dist/src/gallium/drivers/r300/r300_state_derived.c:1064:9:
/usr/xsrc/external/mit/MesaLib/dist/src/gallium/drivers/r300/r300_state_derived.c:676:5:
error: 'util_format_unswizzle_4f' reading 4 bytes from a region of size 0
[-Werror=stringop-overread]
676 | util_format_unswizzle_4f(border_swizzled, border, desc->swizzle);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/xsrc/external/mit/MesaLib/dist/src/gallium/drivers/r300/r300_state_derived.c:676:5:
note: referencing argument 3 of type 'const unsigned char[4]'
In file included from
/usr/xsrc/external/mit/MesaLib/dist/src/gallium/auxiliary/util/u_pack_color.h:40,
from
/usr/xsrc/external/mit/MesaLib/dist/src/gallium/drivers/r300/r300_state_derived.c:28:
/usr/xsrc/external/mit/MesaLib/dist/src/util/format/u_format.h: In function
'r300_update_derived_state':
/usr/xsrc/external/mit/MesaLib/dist/src/util/format/u_format.h:1671:6: note: in
a call to function 'util_format_unswizzle_4f'
1671 | void util_format_unswizzle_4f(float *dst, const float *src,
| ^~~~~~~~~~~~~~~~~~~~~~~~
desc is a const struct util_format_description *
util/format/u_format.h:226 defines the swizzle member of
util_format_description as:
unsigned char swizzle[4];
and the truncated quote of util/format/u_format.h:1671 is
void util_format_unswizzle_4f(float *dst, const float *src,
const unsigned char swz[4]);
so all is consistent.
error: 'util_format_unswizzle_4f' reading 4 bytes from a region of size 0
[-Werror=stringop-overread]
Assuming "a region" is the 3rd argument, then how can the size of an
unsigned char[4] be zero?
Puzzled...
Cheers,
Patrick
