runtime stack traces no longer working in release mode

[nektro]

Zig Version

0.11.0-dev.2928+440b3df70

Steps to Reproduce and Observed Behavior

pub fn main() !void {
 try foo();
}

fn foo() !void {
 try bar();
}

fn bar() !void {
 try bzq();
}

fn bzq() !void {
 @panic("goo");
}

[meghan@nixos]$ zig2 run test.zig -O ReleaseSafe
thread 586207 panic: goo
Aborted (core dumped)

[meghan@nixos]$ zig2 run test.zig -O ReleaseSafe -fno-strip
thread 586281 panic: goo
Aborted (core dumped)

Expected Behavior

[meghan@nixos]$ zig2 run test.zig -O Debug
thread 586445 panic: goo
/run/media/meghan/dev/test.zig:14:5: 0x20b1c5 in bzq (test)
 @panic("goo");
 ^
/run/media/meghan/dev/test.zig:10:12: 0x20b1d8 in bar (test)
 try bzq();
 ^
/run/media/meghan/dev/test.zig:6:12: 0x20b1e8 in foo (test)
 try bar();
 ^
/run/media/meghan/dev/test.zig:2:12: 0x20b1f8 in main (test)
 try foo();
 ^
/home/meghan/src/zig/lib/std/start.zig:609:37: 0x20acc4 in posixCallMainAndExit (test)
 const result = root.main() catch |err| {
 ^
/home/meghan/src/zig/lib/std/start.zig:368:5: 0x20a751 in _start (test)
 @call(.never_inline, posixCallMainAndExit, .{});
 ^
Aborted (core dumped)

[ifreund]

Looks like this will be fixed for ELF at least by #15823

In the meantime, passing -fno-omit-frame-pointer can give the std.debug stacktrace printing code a hand in release builds.

[nektro]

this specific example was likely fixed by #15823 output is now good on 0.11.0

thread 2960263 panic: goo
/run/media/meghan/bcfe99da-edd3-45c5-8abf-14c763507a7f/dev/waffle/test.zig:26:5: 0x20be01 in main (test)
 @panic("goo");
 ^
/home/meghan/.local/share/zig/lib/std/start.zig:574:37: 0x20bdd4 in posixCallMainAndExit (test)
 const result = root.main() catch |err| {
 ^
/home/meghan/.local/share/zig/lib/std/start.zig:243:5: 0x20bcb1 in _start (test)
 asm volatile (switch (native_arch) {
 ^
???:?:?: 0x0 in ??? (???)
Aborted (core dumped)

edit: realized its missing all the inner try frames

[nektro]

result when inspecting a trace in waffle

[meghan@nixos:~]$ sudo cat /run/media/meghan/waffledata/git2/data/log-mOJphH
panic: reached unreachable code
Unwind error at address `exe:0x41850a` (error.InvalidDebugInfo), trace may be incomplete

???:?:?: 0x3cef17 in ??? (exe)
???:?:?: 0x411113 in ??? (exe)
???:?:?: 0x411e52 in ??? (exe)
???:?:?: 0x4112ba in ??? (exe)
???:?:?: 0x82fb5a in ??? (exe)

[linusg]

I get a similar InvalidDebugInfo error in kiesel when building with -Denable-intl=true, i.e. linking ICU4X's libicu_capi_staticlib.a - works fine with false. May be related to #10354 and #12046.