Canonicalize output section name for .ARM.exidx sections

    
The ARM Exception handling ABI requires that all ARM exception index
table sections have a prefix of .ARM.exidx and are combined into a
single contiguous block either in their own output section or as part
of another output section.
    
In general clang will output a single .ARM.exidx section per object,
but will use .ARM.exidx.<section name> when -ffunction-sections is used.
    
This change canonicalizes the names of sections with the .ARM.exidx
prefix to just .ARM.exidx, which ensures that there is only a single
output section.

Differential Revision: https://reviews.llvm.org/D23775

llvm-svn: 279617

1 files changed, 1 insertions, 1 deletions

diff --git a/lld/ELF/Writer.cpp b/lld/ELF/Writer.cpp
index a8c6f824198..d927ee3a376 100644
--- a/lld/ELF/Writer.cpp
+++ b/lld/ELF/Writer.cpp
@@ -90,7 +90,7 @@ StringRef elf::getOutputSectionName(InputSectionBase<ELFT> *S) {
   StringRef Name = S->getSectionName();
   for (StringRef V : {".text.", ".rodata.", ".data.rel.ro.", ".data.", ".bss.",
                       ".init_array.", ".fini_array.", ".ctors.", ".dtors.",
-                      ".tbss.", ".gcc_except_table.", ".tdata."})
+                      ".tbss.", ".gcc_except_table.", ".tdata.", ".ARM.exidx."})
     if (Name.startswith(V))
       return V.drop_back();
   return Name;