gdb/testsuite/gdb.base/condbreak.exp

   1 # Copyright 1997-2019 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This test was written by Rich Title.
  17 # Purpose is to test conditional breakpoints.
  18 # Modeled after "break.exp".
  19
  20 #
  21 # test running programs
  22 #
  23
  24 standard_testfile break.c break1.c
  25
  26 if {[prepare_for_testing "failed to prepare" $testfile [list $srcfile $srcfile2] \
  27          {debug nowarnings}]} {
  28     return -1
  29 }
  30
  31 if [get_compiler_info] {
  32     return -1
  33 }
  34
  35 clean_restart ${binfile}
  36
  37
  38 set bp_location1  [gdb_get_line_number "set breakpoint 1 here"]
  39 set bp_location6  [gdb_get_line_number "set breakpoint 6 here"]
  40 set bp_location8  [gdb_get_line_number "set breakpoint 8 here" $srcfile2]
  41 set bp_location14 [gdb_get_line_number "set breakpoint 14 here" $srcfile2]
  42 set bp_location15 [gdb_get_line_number "set breakpoint 15 here" $srcfile2]
  43 set bp_location17 [gdb_get_line_number "set breakpoint 17 here" $srcfile2]
  44
  45 #
  46 # test break at function
  47 #
  48 gdb_test "break main" \
  49     "Breakpoint.*at.* file .*$srcfile, line.*" \
  50     "breakpoint function"
  51
  52 #
  53 # test conditional break at function
  54 #
  55 gdb_test "break marker1 if 1==1" \
  56     "Breakpoint.*at.* file .*$srcfile2, line.*"
  57
  58 gdb_test_no_output "delete 2"
  59
  60 #
  61 # test conditional break at line number
  62 #
  63 gdb_test "break $srcfile:$bp_location1 if 1==1" \
  64     "Breakpoint.*at.* file .*$srcfile, line $bp_location1\\."
  65
  66 gdb_test_no_output "delete 3"
  67
  68 #
  69 # test conditional break at function
  70 #
  71 gdb_test "break marker1 if (1==1)" \
  72     "Breakpoint.*at.* file .*$srcfile2, line.*"
  73
  74 #
  75 # test conditional break at line number
  76 #
  77 gdb_test "break $srcfile:$bp_location1 if (1==1)" \
  78     "Breakpoint.*at.* file .*$srcfile, line $bp_location1\\."
  79
  80 gdb_test "break marker2 if (a==43)" \
  81     "Breakpoint.*at.* file .*$srcfile2, line.*"
  82
  83 #
  84 # Check break involving inferior function call.
  85 # Ensure there is at least one additional breakpoint with higher VMA.
  86 #
  87 gdb_test "break marker3 if (multi_line_if_conditional(1,1,1)==0)" \
  88     "Breakpoint.*at.* file .*$srcfile2, line.*"
  89 gdb_test "break marker4" \
  90     "Breakpoint.*at.* file .*$srcfile2, line.*"
  91
  92 #
  93 # check to see what breakpoints are set
  94 #
  95 gdb_test "info break" \
  96     "Num     Type\[ \]+Disp Enb Address\[ \]+What.*
  97 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location6.*
  98 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker1 at .*$srcfile2:$bp_location15.*
  99 \[\t \]+stop only if \\(1==1\\).*
 100 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location1.*
 101 \[\t \]+stop only if \\(1==1\\).*
 102 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker2 at .*$srcfile2:$bp_location8.*
 103 \[\t \]+stop only if \\(a==43\\).*
 104 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker3 at .*$srcfile2:$bp_location17.*
 105 \[\t \]+stop only if \\(multi_line_if_conditional\\(1,1,1\\)==0\\).*
 106 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker4 at .*$srcfile2:$bp_location14.*" \
 107     "breakpoint info"
 108
 109
 110 #
 111 # run until the breakpoint at main is hit.
 112 #
 113
 114
 115 rerun_to_main
 116
 117 #
 118 # run until the breakpoint at a line number
 119 #
 120 gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location1.*$bp_location1\[\t \]+printf.*factorial.*" \
 121                         "run until breakpoint set at a line number"
 122
 123 #
 124 # run until the breakpoint at marker1
 125 #
 126 # If the inferior stops at the first instruction of a source line, GDB
 127 # won't print the actual PC value; the source line is enough to
 128 # exactly specify the PC.  But if the inferior is instead stopped in
 129 # the midst of a source line, GDB will include the PC in the
 130 # breakpoint hit message.  This way, GDB always provides the exact
 131 # stop location, but avoids clutter when possible.
 132 #
 133 # Suppose you have a function written completely on one source line, like:
 134 #    int foo (int x) { return 0; }
 135 # Setting a breakpoint at `foo' actually places the breakpoint after
 136 # foo's prologue.
 137 #
 138 # GCC's STABS writer always emits a line entry attributing the
 139 # prologue instructions to the line containing the function's open
 140 # brace, even if the first user instruction is also on that line.
 141 # This means that, in the case of a one-line function, you will get
 142 # two line entries in the debug info for the same line: one at the
 143 # function's entry point, and another at the first user instruction.
 144 # GDB preserves these duplicated line entries, and prefers the later
 145 # one; thus, when the program stops after the prologue, at the first
 146 # user instruction, GDB's search finds the second line entry, decides
 147 # that the PC is indeed at the beginning of a source line, and doesn't
 148 # print an address in the breakpoint hit message.
 149 #
 150 # GCC's Dwarf2 writer, on the other hand, squeezes out duplicate line
 151 # entries, so GDB considers the source line to begin at the start of
 152 # the function's prologue.  Thus, if the program stops at the
 153 # breakpoint, GDB will decide that the PC is not at the beginning of a
 154 # source line, and will print an address.
 155 #
 156 # I think the Dwarf2 writer's behavior is arguably correct, but not
 157 # helpful.  If the user sets a breakpoint at that source line, they
 158 # want that breakpoint to fall after the prologue.  Identifying the
 159 # prologue's code with the opening brace is nice, but it shouldn't
 160 # take precedence over real code.
 161 #
 162 # Until the Dwarf2 writer gets fixed, I'm going to XFAIL its behavior.
 163 gdb_test_multiple "continue" "run until breakpoint at marker1" {
 164     -re  "Continuing\\..*Breakpoint \[0-9\]+, marker1 \\(\\) at .*$srcfile2:$bp_location15.*$bp_location15\[\t \]+.*$gdb_prompt $" {
 165         pass "run until breakpoint at marker1"
 166     }
 167     -re  "Continuing\\..*Breakpoint \[0-9\]+, $hex in marker1 \\(\\) at .*$srcfile2:$bp_location15.*$bp_location15\[\t \]+.*$gdb_prompt $" {
 168         xfail "run until breakpoint at marker1"
 169     }
 170 }
 171
 172 # run until the breakpoint at marker2
 173 # Same issues here as above.
 174 setup_xfail hppa2.0w-*-* 11512CLLbs
 175 gdb_test_multiple "continue" "run until breakpoint at marker2" {
 176     -re "Continuing\\..*Breakpoint \[0-9\]+, marker2 \\(a=43\\) at .*$srcfile2:$bp_location8.*$bp_location8\[\t \]+.*$gdb_prompt $" {
 177         pass "run until breakpoint at marker2"
 178     }
 179     -re "Continuing\\..*Breakpoint \[0-9\]+, $hex in marker2 \\(a=43\\) at .*$srcfile2:$bp_location8.*$bp_location8\[\t \]+.*$gdb_prompt $" {
 180         xfail "run until breakpoint at marker2"
 181     }
 182 }
 183
 184 # Test combinations of conditional and thread-specific breakpoints.
 185 gdb_test "break main if (1==1) thread 999" \
 186     "Unknown thread 999\\."
 187 gdb_test "break main thread 999 if (1==1)" \
 188     "Unknown thread 999\\."
 189
 190 # Verify that both if and thread can be distinguished from a breakpoint
 191 # address expression.
 192 gdb_test "break *main if (1==1) thread 999" \
 193     "Unknown thread 999\\."
 194 gdb_test "break *main thread 999 if (1==1)" \
 195     "Unknown thread 999\\."
 196
 197 # Similarly for task.
 198 gdb_test "break *main if (1==1) task 999" \
 199     "Unknown task 999\\."
 200 gdb_test "break *main task 999 if (1==1)" \
 201     "Unknown task 999\\."
 202
 203 # GDB accepts abbreviations for "thread" and "task".
 204 gdb_test "break *main if (1==1) t 999" \
 205     "Unknown thread 999\\."
 206 gdb_test "break *main if (1==1) th 999" \
 207     "Unknown thread 999\\."
 208 gdb_test "break *main if (1==1) ta 999" \
 209     "Unknown task 999\\."
 210
 211 set test "run until breakpoint at marker3"
 212 gdb_test_multiple "continue" $test {
 213     -re "Continuing\\..*Breakpoint \[0-9\]+, marker3 \\(a=$hex \"stack\", b=$hex \"trace\"\\) at .*$srcfile2:$bp_location17.*$bp_location17\[\t \]+.*$gdb_prompt $" {
 214         pass $test
 215     }
 216     -re "Continuing\\..*Breakpoint \[0-9\]+, $hex in marker3 \\(a=$hex \"stack\", b=$hex \"trace\"\\) at .*$srcfile2:$bp_location17.*$bp_location17\[\t \]+.*$gdb_prompt $" {
 217         xfail $test
 218     }
 219 }
 220
 221 set test "run until breakpoint at marker4"
 222 gdb_test_multiple "continue" $test {
 223     -re "Continuing\\..*Breakpoint \[0-9\]+, marker4 \\(d=177601976\\) at .*$srcfile2:$bp_location14.*$bp_location14\[\t \]+.*$gdb_prompt $" {
 224         pass $test
 225     }
 226     -re "Continuing\\..*Breakpoint \[0-9\]+, $hex in marker4 \\(d=177601976\\) at .*$srcfile2:$bp_location14.*$bp_location14\[\t \]+.*$gdb_prompt $" {
 227         xfail $test
 228     }
 229 }
 230
 231 gdb_test "complete cond 1" "cond 1"
 232 gdb_test "set variable \$var = 1"
 233 gdb_test "complete cond \$v" "cond \\\$var"
 234 gdb_test "complete cond 1 values\[0\].a" "cond 1 values.0..a_field"