a05a36a5fc
See the description here: https://sourceware.org/ml/gdb-patches/2014-08/msg00283.html This patch keeps track of whether the current line has seen a non-zero discriminator, and if so coalesces consecutive entries for the same line (by ignoring all entries after the first). gdb/ChangeLog: PR 17276 * dwarf2read.c (dwarf_record_line_p): New function. (dwarf_decode_lines_1): Ignore subsequent line number entries for the same line if any entry had a non-zero discriminator. gdb/testsuite/ChangeLog: * gdb.dwarf2/dw2-single-line-discriminators.S: New file. * gdb.dwarf2/dw2-single-line-discriminators.c: New file. * gdb.dwarf2/dw2-single-line-discriminators.exp: New file.
49 lines
1.5 KiB
Text
49 lines
1.5 KiB
Text
# Copyright 2012-2014 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test gdb's coalescing of multiple line number entries for the same line
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# but with different discriminators. PR 17276.
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load_lib dwarf.exp
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# This test can only be run on targets which support DWARF-2 and use gas.
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if ![dwarf2_support] {
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return 0
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}
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# This test can only be run on x86-64 targets.
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if {![istarget x86_64-*] || ![is_lp64_target]} {
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return 0
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}
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standard_testfile .S
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set csrcfile ${testfile}.c
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if { [prepare_for_testing "${testfile}.exp" "${testfile}" $srcfile {nodebug}] } {
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return -1
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}
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if ![runto_main] then {
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fail "Cannot run to main."
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continue
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}
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set srcline [gdb_get_line_number "stepi line" $csrcfile]
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gdb_breakpoint $srcline
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gdb_continue_to_breakpoint "stepi line"
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# A stepi will land us in the middle of the line, and thus
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# gdb should print the pc value.
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gdb_test "stepi" "$hex\[ \t\]+$srcline\[ \t\]+\[^\r\n\]+"
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