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* [Bug backtrace/30929] New: 'frame function' fails when call is the last instruction @ 2023-10-01 15:51 amonakov at gmail dot com 2023-10-01 16:40 ` [Bug backtrace/30929] " tromey at sourceware dot org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: amonakov at gmail dot com @ 2023-10-01 15:51 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=30929 Bug ID: 30929 Summary: 'frame function' fails when call is the last instruction Product: gdb Version: unknown Status: UNCONFIRMED Severity: normal Priority: P2 Component: backtrace Assignee: unassigned at sourceware dot org Reporter: amonakov at gmail dot com Target Milestone: --- int main() { __builtin_abort(); } gcc -g test.c gdb ./a.out (gdb) start Temporary breakpoint 1 at 0x40113a: file t.c, line 3. Temporary breakpoint 1, main () at t.c:3 3 __builtin_abort(); (gdb) f f main #0 main () at t.c:3 3 __builtin_abort(); (gdb) c Continuing. Program received signal SIGABRT, Aborted. 0x00007ffff7e4d47c in __pthread_kill_implementation () from /lib64/libc.so.6 (gdb) bt #0 0x00007ffff7e4d47c in __pthread_kill_implementation () from /lib64/libc.so.6 #1 0x00007ffff7dfae16 in raise () from /lib64/libc.so.6 #2 0x00007ffff7de389c in abort () from /lib64/libc.so.6 #3 0x000000000040113f in main () at t.c:3 (gdb) f f main No frame for function "main". Compiling to an intermediate assembly file and adding a nop after 'call abort' is sufficient to make it work. Apparently 'frame function' doesn't work in the corner case when return address is exactly past the end of a function (the last instruction was a call). In practice this breaks the following snippet: catch signal SIGABRT commands f f __assert_fail up end which is supposed to automatically select the frame of the failing assert. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug backtrace/30929] 'frame function' fails when call is the last instruction 2023-10-01 15:51 [Bug backtrace/30929] New: 'frame function' fails when call is the last instruction amonakov at gmail dot com @ 2023-10-01 16:40 ` tromey at sourceware dot org 2023-10-01 17:13 ` amonakov at gmail dot com ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: tromey at sourceware dot org @ 2023-10-01 16:40 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=30929 Tom Tromey <tromey at sourceware dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Last reconfirmed| |2023-10-01 CC| |tromey at sourceware dot org Status|UNCONFIRMED |WAITING --- Comment #1 from Tom Tromey <tromey at sourceware dot org> --- Can you try git master gdb? I suspect this is a dup of bug#29074. If not, then it is probably another instance of bug#8416 - same idea, just need to track down the spot with the incorrect call. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug backtrace/30929] 'frame function' fails when call is the last instruction 2023-10-01 15:51 [Bug backtrace/30929] New: 'frame function' fails when call is the last instruction amonakov at gmail dot com 2023-10-01 16:40 ` [Bug backtrace/30929] " tromey at sourceware dot org @ 2023-10-01 17:13 ` amonakov at gmail dot com 2023-10-06 12:33 ` tromey at sourceware dot org 2024-01-10 20:10 ` tromey at sourceware dot org 3 siblings, 0 replies; 5+ messages in thread From: amonakov at gmail dot com @ 2023-10-01 17:13 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=30929 --- Comment #2 from Alexander Monakov <amonakov at gmail dot com> --- No, I don't have a git build of GDB. The instructions should be straightforward to follow for any active GDB developer (who presumably has a git build at hand). -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug backtrace/30929] 'frame function' fails when call is the last instruction 2023-10-01 15:51 [Bug backtrace/30929] New: 'frame function' fails when call is the last instruction amonakov at gmail dot com 2023-10-01 16:40 ` [Bug backtrace/30929] " tromey at sourceware dot org 2023-10-01 17:13 ` amonakov at gmail dot com @ 2023-10-06 12:33 ` tromey at sourceware dot org 2024-01-10 20:10 ` tromey at sourceware dot org 3 siblings, 0 replies; 5+ messages in thread From: tromey at sourceware dot org @ 2023-10-06 12:33 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=30929 Tom Tromey <tromey at sourceware dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |NEW --- Comment #3 from Tom Tromey <tromey at sourceware dot org> --- Confirmed. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug backtrace/30929] 'frame function' fails when call is the last instruction 2023-10-01 15:51 [Bug backtrace/30929] New: 'frame function' fails when call is the last instruction amonakov at gmail dot com ` (2 preceding siblings ...) 2023-10-06 12:33 ` tromey at sourceware dot org @ 2024-01-10 20:10 ` tromey at sourceware dot org 3 siblings, 0 replies; 5+ messages in thread From: tromey at sourceware dot org @ 2024-01-10 20:10 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=30929 Tom Tromey <tromey at sourceware dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- Blocks| |8416 Referenced Bugs: https://sourceware.org/bugzilla/show_bug.cgi?id=8416 [Bug 8416] Audit get_frame_pc vs get_frame_address_in_block -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2024-01-10 20:10 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-10-01 15:51 [Bug backtrace/30929] New: 'frame function' fails when call is the last instruction amonakov at gmail dot com 2023-10-01 16:40 ` [Bug backtrace/30929] " tromey at sourceware dot org 2023-10-01 17:13 ` amonakov at gmail dot com 2023-10-06 12:33 ` tromey at sourceware dot org 2024-01-10 20:10 ` tromey at sourceware dot org
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