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| author | Alan Modra <amodra@gmail.com> | 2017-02-03 19:18:37 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2017-02-03 20:06:53 +1030 |
| commit | e666304ec603bb3249f80bac97200f2b4520ab0f (patch) | |
| tree | df1e7832c00fe5f7518d52a6994e76611cc3dc98 | |
| parent | 1b7e3d2fb7036ce6f9d74e32dc052518f5cd45b6 (diff) | |
| download | gdb-e666304ec603bb3249f80bac97200f2b4520ab0f.zip gdb-e666304ec603bb3249f80bac97200f2b4520ab0f.tar.gz gdb-e666304ec603bb3249f80bac97200f2b4520ab0f.tar.bz2 | |
[GOLD] PowerPC64 TOC indirect to TOC relative segfault
* powerpc.cc (Powerpc_relobj::make_toc_relative): Don't crash
when no .toc section exists.
| -rw-r--r-- | gold/ChangeLog | 5 | ||||
| -rw-r--r-- | gold/powerpc.cc | 6 |
2 files changed, 11 insertions, 0 deletions
diff --git a/gold/ChangeLog b/gold/ChangeLog index c50e1f8..56fe966 100644 --- a/gold/ChangeLog +++ b/gold/ChangeLog @@ -1,3 +1,8 @@ +2017-02-03 Alan Modra <amodra@gmail.com> + + * powerpc.cc (Powerpc_relobj::make_toc_relative): Don't crash + when no .toc section exists. + 2017-01-31 Cary Coutant <ccoutant@gmail.com> PR gold/21090 diff --git a/gold/powerpc.cc b/gold/powerpc.cc index a67c336..4abfcec 100644 --- a/gold/powerpc.cc +++ b/gold/powerpc.cc @@ -1986,6 +1986,12 @@ Powerpc_relobj<size, big_endian>::make_toc_relative( if (size != 64) return false; + // With -mcmodel=medium code it is quite possible to have + // toc-relative relocs referring to objects outside the TOC. + // Don't try to look at a non-existent TOC. + if (this->toc_shndx() == 0) + return false; + // Convert VALUE back to an address by adding got_base (see below), // then to an offset in the TOC by subtracting the TOC output // section address and the TOC output offset. Since this TOC output |