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authorPedro Alves <palves@redhat.com>2014-03-18 17:50:28 +0000
committerPedro Alves <palves@redhat.com>2014-03-18 17:50:28 +0000
commit0c7e1a4602a41a1caf637823f67948be31d27732 (patch)
treedecd909f1ca080aec0ad5dbc0d77a717cfb50aba /gdb/testsuite
parenta52e6fd34add3dbf267ac78e4d7912a0a3f65ece (diff)
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PR gdb/13860: make "-exec-foo"'s MI output equal to "foo"'s MI output.
Part of PR gdb/13860 is about the mi-solib.exp test's output being different in sync vs async modes. sync: >./gdb -nx -q ./testsuite/gdb.mi/solib-main -ex "set stop-on-solib-events 1" -ex "set target-async off" -i=mi =thread-group-added,id="i1" ~"Reading symbols from /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main..." ~"done.\n" (gdb) &"start\n" ~"Temporary breakpoint 1 at 0x400608: file ../../../src/gdb/testsuite/gdb.mi/solib-main.c, line 21.\n" =breakpoint-created,bkpt={number="1",type="breakpoint",disp="del",enabled="y",addr="0x0000000000400608",func="main",file="../../../src/gdb/testsuite/gdb.mi/solib-main.c",fullname="/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.mi/solib-main.c",line="21",times="0",original-location="main"} ~"Starting program: /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main \n" =thread-group-started,id="i1",pid="17724" =thread-created,id="1",group-id="i1" ^running *running,thread-id="all" (gdb) =library-loaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",symbols-loaded="0",thread-group="i1" ~"Stopped due to shared library event (no libraries added or removed)\n" *stopped,reason="solib-event",frame={addr="0x000000379180f990",func="_dl_debug_state",args=[],from="/lib64/ld-linux-x86-64.so.2"},thread-id="1",stopped-threads="all",core="3" (gdb) async: >./gdb -nx -q ./testsuite/gdb.mi/solib-main -ex "set stop-on-solib-events 1" -ex "set target-async on" -i=mi =thread-group-added,id="i1" ~"Reading symbols from /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main..." ~"done.\n" (gdb) start &"start\n" ~"Temporary breakpoint 1 at 0x400608: file ../../../src/gdb/testsuite/gdb.mi/solib-main.c, line 21.\n" =breakpoint-created,bkpt={number="1",type="breakpoint",disp="del",enabled="y",addr="0x0000000000400608",func="main",file="../../../src/gdb/testsuite/gdb.mi/solib-main.c",fullname="/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.mi/solib-main.c",line="21",times="0",original-location="main"} ~"Starting program: /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main \n" =thread-group-started,id="i1",pid="17729" =thread-created,id="1",group-id="i1" ^running *running,thread-id="all" =library-loaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",symbols-loaded="0",thread-group="i1" (gdb) *stopped,reason="solib-event",thread-id="1",stopped-threads="all",core="1" For now, let's focus only on the *stopped event. We see that the async output is missing frame info. And this causes a test failure in async mode, as "mi_expect_stop solib-event" wants to see the frame info. However, if we compare the event output when a real MI execution command is used, compared to a CLI command (e.g., run vs -exec-run, next vs -exec-next, etc.), we see: >./gdb -nx -q ./testsuite/gdb.mi/solib-main -ex "set stop-on-solib-events 1" -ex "set target-async off" -i=mi =thread-group-added,id="i1" ~"Reading symbols from /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main..." ~"done.\n" (gdb) r &"r\n" ~"Starting program: /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/solib-main \n" =thread-group-started,id="i1",pid="17751" =thread-created,id="1",group-id="i1" ^running *running,thread-id="all" (gdb) =library-loaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",symbols-loaded="0",thread-group="i1" ~"Stopped due to shared library event (no libraries added or removed)\n" *stopped,reason="solib-event",frame={addr="0x000000379180f990",func="_dl_debug_state",args=[],from="/lib64/ld-linux-x86-64.so.2"},thread-id="1",stopped-threads="all",core="3" (gdb) -exec-run =thread-exited,id="1",group-id="i1" =thread-group-exited,id="i1" =library-unloaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",thread-group="i1" =thread-group-started,id="i1",pid="17754" =thread-created,id="1",group-id="i1" ^running *running,thread-id="all" (gdb) =library-loaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",symbols-loaded="0",thread-group="i1" *stopped,reason="solib-event",thread-id="1",stopped-threads="all",core="1" =thread-selected,id="1" (gdb) As seen above, with MI commands, the *stopped event _doesn't_ have frame info. This is because normal_stop, as commanded by the result of bpstat_print, skips printing frame info in this case (it's an "event", not a "breakpoint"), and when the interpreter is MI, mi_on_normal_stop skips calling print_stack_frame, as the normal_stop call was already done with the MI uiout. This explains why the async output is different even with a CLI command. Its because in async mode, the mi_on_normal_stop path is always taken; it is always reached with the MI uiout, because the stop is handled from the event loop, instead of from within `proceed -> wait_for_inferior -> normal_stop' with the interpreter overridden, as in sync mode. This patch fixes the issue by making all cases output the same *stopped event, by factoring out the print code from normal_stop, and using it from mi_on_normal_stop as well. I chose the *stopped output without a frame, mainly because that is what you already get if you use MI execution commands, the commands frontends are supposed to use (except when implementing a console). This patch makes it simpler to tweak the MI output differently if desired, as we only have to change the centralized print_stop_event (taking into account whether the uiout is MI-like), and all different modes will change accordingly. Tested on x86_64 Fedora 17, no regressions. The mi-solib.exp test no longer fails in async mode with this patch, so the patch removes the kfail. 2014-03-18 Pedro Alves <palves@redhat.com> PR gdb/13860 * inferior.h (print_stop_event): Declare. * infrun.c (print_stop_event): New, factored out from ... (normal_stop): ... this. * mi/mi-interp.c (mi_on_normal_stop): Use print_stop_event instead of bpstat_print/print_stack_frame. 2014-03-18 Pedro Alves <palves@redhat.com> PR gdb/13860 * gdb.mi/mi-solib.exp: Remove gdb/13860 kfail. * lib/mi-support.exp (mi_expect_stop): Add special handling for solib-event.
Diffstat (limited to 'gdb/testsuite')
-rw-r--r--gdb/testsuite/ChangeLog7
-rw-r--r--gdb/testsuite/gdb.mi/mi-solib.exp4
-rw-r--r--gdb/testsuite/lib/mi-support.exp18
3 files changed, 23 insertions, 6 deletions
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 4e6e248..458e795 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2014-03-18 Pedro Alves <palves@redhat.com>
+
+ PR gdb/13860
+ * gdb.mi/mi-solib.exp: Remove gdb/13860 kfail.
+ * lib/mi-support.exp (mi_expect_stop): Add special handling for
+ solib-event.
+
2014-03-17 Joel Brobecker <brobecker@adacore.com>
* gdb.ada/pckd_arr_ren: New testcase.
diff --git a/gdb/testsuite/gdb.mi/mi-solib.exp b/gdb/testsuite/gdb.mi/mi-solib.exp
index 06fa26b..608d2b7 100644
--- a/gdb/testsuite/gdb.mi/mi-solib.exp
+++ b/gdb/testsuite/gdb.mi/mi-solib.exp
@@ -60,8 +60,4 @@ mi_gdb_test "777-gdb-set stop-on-solib-events 1" "777\\^done" \
# commands still cause the correct MI output to be generated.
mi_run_with_cli
-global async
-if { $async } {
- setup_kfail gdb/13860 *-*-*
-}
mi_expect_stop solib-event .* .* .* .* .* "check for solib event"
diff --git a/gdb/testsuite/lib/mi-support.exp b/gdb/testsuite/lib/mi-support.exp
index 1e8fee6..213073a 100644
--- a/gdb/testsuite/lib/mi-support.exp
+++ b/gdb/testsuite/lib/mi-support.exp
@@ -1028,6 +1028,8 @@ proc mi_expect_stop { reason func args file line extra test } {
global thread_selected_re
global breakpoint_re
+ set any "\[^\n\]*"
+
set after_stopped ""
set after_reason ""
if { [llength $extra] == 2 } {
@@ -1070,6 +1072,20 @@ proc mi_expect_stop { reason func args file line extra test } {
return
}
+ if { $reason == "solib-event" } {
+ set pattern "\\*stopped,reason=\"solib-event\",thread-id=\"$decimal\",stopped-threads=$any\r\n($thread_selected_re|$breakpoint_re)*$prompt_re"
+ verbose -log "mi_expect_stop: expecting: $pattern"
+ gdb_expect {
+ -re "$pattern" {
+ pass "$test"
+ }
+ timeout {
+ fail "$test (unknown output after running)"
+ }
+ }
+ return
+ }
+
set args "\\\[$args\\\]"
set bn ""
@@ -1087,8 +1103,6 @@ proc mi_expect_stop { reason func args file line extra test } {
set a $after_reason
- set any "\[^\n\]*"
-
verbose -log "mi_expect_stop: expecting: \\*stopped,${r}${a}${bn}frame=\{addr=\"$hex\",func=\"$func\",args=$args,(?:file=\"$any$file\",fullname=\"${fullname_syntax}$file\",line=\"$line\"|from=\"$file\")\}$after_stopped,thread-id=\"$decimal\",stopped-threads=$any\r\n($thread_selected_re|$breakpoint_re)*$prompt_re"
gdb_expect {
-re "\\*stopped,${r}${a}${bn}frame=\{addr=\"$hex\",func=\"$func\",args=$args,(?:file=\"$any$file\",fullname=\"${fullname_syntax}$file\",line=\"($line)\"|from=\"$file\")\}$after_stopped,thread-id=\"$decimal\",stopped-threads=$any\r\n($thread_selected_re|$breakpoint_re)*$prompt_re" {