diff options
| -rw-r--r-- | lld/ELF/Symbols.cpp | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/lld/ELF/Symbols.cpp b/lld/ELF/Symbols.cpp index 59e43d3854a..37435841c3b 100644 --- a/lld/ELF/Symbols.cpp +++ b/lld/ELF/Symbols.cpp @@ -74,12 +74,14 @@ static typename ELFT::uint getSymVA(const SymbolBody &Body, int64_t &Addend) { // An object in an SHF_MERGE section might be referenced via a // section symbol (as a hack for reducing the number of local // symbols). - // We must incorporate the addend into the section offset (and - // zero out the addend for later processing) so that we find the - // right object in the section. - // Note that for an ordinary symbol we do not perform this - // adjustment and thus effectively assume that the addend cannot - // cross the boundaries of mergeable objects. + // Depending on the addend, the reference via a section symbol + // refers to a different object in the merge section. + // Since the objects in the merge section are not necessarily + // contiguous in the output, the addend can thus affect the final + // VA in a non-linear way. + // To make this work, we incorporate the addend into the section + // offset (and zero out the addend for later processing) so that + // we find the right object in the section. if (D.isSection()) { Offset += Addend; Addend = 0; |
