From 79d53096041c05db5f54a0fdf0b0dae4fe48ccec Mon Sep 17 00:00:00 2001 From: Nikita Popov Date: Fri, 17 Dec 2021 11:26:39 +0100 Subject: Explicitly set no ELF flags for .rustc section For a data section, the object crate will set the SHF_ALLOC by default, which is exactly what we don't want. Explicitly set sh_flags to zero to avoid this. --- compiler/rustc_codegen_ssa/src/back/metadata.rs | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/compiler/rustc_codegen_ssa/src/back/metadata.rs b/compiler/rustc_codegen_ssa/src/back/metadata.rs index 1df5540e3b8..7c97143e807 100644 --- a/compiler/rustc_codegen_ssa/src/back/metadata.rs +++ b/compiler/rustc_codegen_ssa/src/back/metadata.rs @@ -259,8 +259,15 @@ pub fn create_compressed_metadata_file( let section = file.add_section( file.segment_name(StandardSegment::Data).to_vec(), b".rustc".to_vec(), - SectionKind::Data, + SectionKind::ReadOnlyData, ); + match file.format() { + BinaryFormat::Elf => { + // Explicitly set no flags to avoid SHF_ALLOC default for data section. + file.section_mut(section).flags = SectionFlags::Elf { sh_flags: 0 }; + } + _ => {} + }; let offset = file.append_section_data(section, &compressed, 1); // For MachO and probably PE this is necessary to prevent the linker from throwing away the -- cgit v1.2.1