5f3ff4f893
https://bugzilla.redhat.com/show_bug.cgi?id=1270564#c15 https://bugzilla.redhat.com/attachment.cgi?id=1081772 clang-3.5.0-9.fc22.x86_64 <3><22b2>: Abbrev Number: 69 (DW_TAG_variable) <22b3> DW_AT_location : 7 byte block: 92 ff ff ff ff f 0 (DW_OP_bregx: 4294967295 (r-1) 0) <22bb> DW_AT_name : (indirect string, offset: 0x2a36): texture_data <22c1> DW_AT_type : <0x1d3> (gdb) p variable warning: Unmapped DWARF Register #-1 encountered. regcache.c:177: internal-error: register_size: Assertion `regnum >= 0 && regnum < (gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch))' failed. [...] Quit this debugging session? (y or n) FAIL: gdb.dwarf2/dw2-regno-invalid.exp: p variable (GDB internal error) -> (x86_64) (gdb) p variable warning: Unmapped DWARF Register #-1 encountered. Invalid register #-1, expecting 0 <= # < 220 (gdb) PASS: gdb.dwarf2/dw2-regno-invalid.exp: p variable -> (i386) (gdb) p variable Invalid register #104, expecting 0 <= # < 104 (gdb) PASS: gdb.dwarf2/dw2-regno-invalid.exp: p variable GDB calls gdbarch_dwarf2_reg_to_regnum() first which returns -1 in the x86_64 case if (regnum == -1) warning (_("Unmapped DWARF Register #%d encountered."), reg); but in i386 case it does: /* This will hopefully provoke a warning. */ return gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch); and the default implementation is a nop, leaving whatever register number the DWARF specified. gdb/ChangeLog 2015-10-20 Jan Kratochvil <jan.kratochvil@redhat.com> * findvar.c (address_from_register): Check REGNUM validity. gdb/testsuite/ChangeLog 2015-10-20 Jan Kratochvil <jan.kratochvil@redhat.com> Pedro Alves <palves@redhat.com> * gdb.dwarf2/dw2-regno-invalid.exp: New file. * lib/dwarf.exp (Dwarf): Add DW_OP_bregx. |
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| .. | ||
| ada.exp | ||
| append_gdb_boards_dir.exp | ||
| build-piece.exp | ||
| cache.exp | ||
| cell.exp | ||
| cl_util.c | ||
| cl_util.h | ||
| compiler.c | ||
| compiler.cc | ||
| cp-support.exp | ||
| d-support.exp | ||
| dtrace.exp | ||
| dwarf.exp | ||
| fortran.exp | ||
| future.exp | ||
| gdb-guile.exp | ||
| gdb-python.exp | ||
| gdb-utils.exp | ||
| gdb.exp | ||
| gdbserver-support.exp | ||
| gen-perf-test.exp | ||
| go.exp | ||
| java.exp | ||
| mi-support.exp | ||
| objc.exp | ||
| opencl.exp | ||
| opencl_hostapp.c | ||
| opencl_kernel.cl | ||
| pascal.exp | ||
| pdtrace.in | ||
| perftest.exp | ||
| prelink-support.exp | ||
| prompt.exp | ||
| range-stepping-support.exp | ||
| read1.c | ||
| selftest-support.exp | ||
| set_unbuffered_mode.c | ||
| trace-support.exp | ||
| unbuffer_output.c | ||