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| author | Frank Ch. Eigler <fche@elastic.org> | 2009-09-22 17:35:31 -0400 |
|---|---|---|
| committer | Frank Ch. Eigler <fche@elastic.org> | 2009-09-22 17:37:01 -0400 |
| commit | 4ad42007734cc4c12b9addd67542f4f76230434e (patch) | |
| tree | decc394b55fb52f4e2d3fbd92a6419f8c58030e9 /dwflpp.cxx | |
| parent | 28c799966162a8a9b74a7b0e4aed092e0e10931a (diff) | |
| download | systemtap-steved-4ad42007734cc4c12b9addd67542f4f76230434e.tar.gz systemtap-steved-4ad42007734cc4c12b9addd67542f4f76230434e.tar.xz systemtap-steved-4ad42007734cc4c12b9addd67542f4f76230434e.zip | |
PR10574: remove comdat/duplicate functions with entrypc=0
* dwflpp.c (die_entrypc): Reject entrypc=0 functions.
Diffstat (limited to 'dwflpp.cxx')
| -rw-r--r-- | dwflpp.cxx | 13 |
1 files changed, 12 insertions, 1 deletions
@@ -1467,10 +1467,21 @@ dwflpp::die_entrypc (Dwarf_Die * die, Dwarf_Addr * addr) } } + // PR10574: reject subprograms where the entrypc address turns out + // to be 0, since they tend to correspond to duplicate-eliminated + // COMDAT copies of C++ functions. + if (rc == 0 && *addr == 0) + { + lookup_method += " (skip comdat)"; + rc = 1; + } + if (sess.verbose > 2) - clog << "entry-pc lookup (" << lookup_method << ") = 0x" << hex << *addr << dec + clog << "entry-pc lookup (" << lookup_method << " dieoffset: " << lex_cast_hex(dwarf_dieoffset (die)) + << ") = 0x" << hex << *addr << dec << " (rc " << rc << ")" << endl; + return (rc == 0); } |