| @@ -30,7 +30,7 @@ use rustc_span::source_map::{FilePathMapping, SourceMap}; |
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use rustc_span::{FileNameDisplayPreference, RealFileName, Span, Symbol}; |
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use rustc_target::asm::InlineAsmArch; |
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use rustc_target::spec::{ |
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-CodeModel, DebuginfoKind, PanicStrategy, RelocModel, RelroLevel, SanitizerSet, |
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+CodeModel, DebuginfoKind, LinkerFeatures, PanicStrategy, RelocModel, RelroLevel, SanitizerSet, |
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SmallDataThresholdSupport, SplitDebuginfo, StackProtector, SymbolVisibility, Target, |
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TargetTriple, TlsModel, |
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}; |
| @@ -622,11 +622,20 @@ impl Session { |
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/// Returns the default symbol visibility. |
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pub fn default_visibility(&self) -> SymbolVisibility { |
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+// For now, we default to using protected only if the LLD linker features is enabled. This |
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+// is to avoid link errors that are likely if using protected visibility with GNU ld < 2.40. |
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+let fallback = |
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+if self.opts.unstable_opts.linker_features.enabled.contains(LinkerFeatures::LLD) { |
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+SymbolVisibility::Protected |
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+} else { |
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+SymbolVisibility::Interposable |
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+}; |
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+ |
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self.opts |
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.unstable_opts |
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.default_visibility |
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.or(self.target.options.default_visibility) |
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-.unwrap_or(SymbolVisibility::Interposable) |
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+.unwrap_or(fallback) |
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} |
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} |
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