https://sourceware.org/bugzilla/show_bug.cgi?id=34557
--- Comment #1 from Sourceware Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Georg-Johann Lay <[email protected]>: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=24c9540565df85b1b51f25505d5f99bbbbd18132 commit 24c9540565df85b1b51f25505d5f99bbbbd18132 Author: Georg-Johann Lay <[email protected]> Date: Fri Aug 21 15:20:04 2026 +0200 AVR: ld/34557 - Support .gnu_attribute to encode the size of [long] double. AVR GCC allows to chose the size of double and long double at compile time by means of -m[long-]double={32|64}. As these options select a different ABI, Binutils should complain when an attempt is being made to link incompatible object files. This patch adds .gnu_attribute 8 (Tag_GNU_AVR_BITS_DOUBLE) .gnu_attribute 12 (Tag_GNU_AVR_BITS_LONG_DOUBLE) and some simple test cases. A tag value of 0 is compatible with all other tag values. Two non-zero tag values are compatible iff they are the same. PR ld/34557 include/ * elf/avr.h (Tag_GNU_AVR_BITS_DOUBLE = 8) (Tag_GNU_AVR_BITS_LONG_DOUBLE = 12): Define new enum values. bfd/ * elf32-avr.c (avr_elf_merge_obj_attributes): Support Tag_GNU_AVR_BITS_DOUBLE, Tag_GNU_AVR_BITS_LONG_DOUBLE. binutils/ * readelf.c (display_avr_gnu_attribute): Support Tag_GNU_AVR_BITS_DOUBLE, Tag_GNU_AVR_BITS_LONG_DOUBLE. gas/ * doc/as.texi (AVR Attributes): Document Tag_GNU_AVR_BITS_DOUBLE, Tag_GNU_AVR_BITS_LONG_DOUBLE. ld/ * NEWS: Mention the new avr .gnu_attribute's 8 and 12. * testsuite/ld-avr/attr-gnu-8-0.s: New file. * testsuite/ld-avr/attr-gnu-8-32.s: New file. * testsuite/ld-avr/attr-gnu-8-64.s: New file. * testsuite/ld-avr/attr-gnu-8-32.d: New test. * testsuite/ld-avr/attr-gnu-8-32_0.d: New test. * testsuite/ld-avr/attr-gnu-8-32_64.d: New test. * testsuite/ld-avr/attr-gnu-8_12.d: New test. * testsuite/ld-avr/attr-gnu-12-0.s: New file. * testsuite/ld-avr/attr-gnu-12-64.s: New file. * testsuite/ld-avr/attr-gnu-12-32.s: New file. * testsuite/ld-avr/attr-gnu-12-32.d: New test. * testsuite/ld-avr/attr-gnu-12-32_0.d: New test. * testsuite/ld-avr/attr-gnu-12-32_64.d: New test. -- You are receiving this mail because: You are on the CC list for the bug.
