30 lines
1.3 KiB
Diff
30 lines
1.3 KiB
Diff
r12545 | sewardj | 2012-04-29 13:35:37 +0200 (Sun, 29 Apr 2012) | 3 lines
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Correctly parse DW_FORM_ref_addr -- its format is different in Dwarf2
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vs Dwarf3 and later. Fixes #298864. (Tom Tromey, tromey@redhat.com)
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Index: coregrind/m_debuginfo/readdwarf3.c
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===================================================================
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--- valgrind-3.7.0/coregrind/m_debuginfo/readdwarf3.c (revision 12544)
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+++ valgrind-3.7.0/coregrind/m_debuginfo/readdwarf3.c (revision 12545)
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@@ -1152,9 +1152,17 @@
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So for the moment we merely range-check, to see that they
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actually do specify a plausible offset within this
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object's .debug_info, and return the value unchanged.
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+
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+ In DWARF 2, DW_FORM_ref_addr is address-sized, but in
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+ DWARF 3 and later, it is offset-sized.
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*/
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- *cts = (ULong)(UWord)get_UWord(c);
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- *ctsSzB = sizeof(UWord);
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+ if (cc->version == 2) {
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+ *cts = (ULong)(UWord)get_UWord(c);
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+ *ctsSzB = sizeof(UWord);
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+ } else {
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+ *cts = get_Dwarfish_UWord(c, cc->is_dw64);
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+ *ctsSzB = cc->is_dw64 ? sizeof(ULong) : sizeof(UInt);
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+ }
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TRACE_D3("0x%lx", (UWord)*cts);
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if (0) VG_(printf)("DW_FORM_ref_addr 0x%lx\n", (UWord)*cts);
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if (/* the following 2 are surely impossible, but ... */
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