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Fix sysdeps/mips/dl-machine-reject-phdr.h build with GCC 16 

Building for MIPS has been broken with GCC mainline since mid-July,
probably GCC commit 0eac9cfee8cb0b21de866a04d5d59685ab35208f "c, c++:
Extend -Wunused-but-set-* warnings [PR44677]", because the variable
perfect_match in elf_machine_reject_phdr_p is set unconditionally, but
only used if _MIPS_SIM == _ABIO32.  Mark it with __attribute__ ((unused)),
which seems cleaner in such a conditionally-used case than making all
other logic relating to this variable conditional.

Tested with build-many-glibcs.py (compilers build, which previously
failed) for mips64-linux-gnu.
This commit is contained in:
Joseph Myers 2025-09-03 16:04:49 +00:00
parent 8ced7815fb
commit b7f904012a
1 changed files with 1 additions and 1 deletions
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sysdeps/mips/dl-machine-reject-phdr.h
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@ -162,7 +162,7 @@ elf_machine_reject_phdr_p (const ElfW(Phdr) *phdr, unsigned int phnum,
int in_abi = -1;
struct abi_req in_req;
Elf_MIPS_ABIFlags_v0 mips_abiflags;
bool perfect_match = false;
bool perfect_match __attribute__ ((unused)) = false;
#if _MIPS_SIM == _ABIO32
unsigned int cur_mode = -1;
# if HAVE_PRCTL_FP_MODE