some 32-bit dynamic libc targets have started failing since the std.debug refactor #25520
Description
Since #25227, I'm seeing failure like this:
error: while executing test 'heap.test.StackFallbackAllocator', the following command terminated with signal 6 (expected exited with code 0):
qemu-mips -L /usr/local/lib/libc/mips-linux-gnu-soft ./.zig-cache/o/c8a2ce8e4173b29fd379a971471fe9c9/test --cache-dir=./.zig-cache --seed=0xbae0614b --listen=-
test-std
└─ run test std-mipsel-linux-musleabihf-mips32r2-Debug-libc-dynamic failure
Segmentation fault at address 0x2d8b0037
/home/alexrp/Source/ziglang/zig/lib/compiler_rt/memcpy.zig:170:17: 0x257032c in copyFixedLength (compiler_rt)
d[i] = s[i];
^
/home/alexrp/Source/ziglang/zig/lib/std/posix/test.zig:353:31: 0x1d0eb0f in iter_fn (test)
const phdr = info.phdr[i];
^
/home/alexrp/Source/ziglang/zig/lib/std/posix.zig:5809:25: 0x1d0e86b in callbackC (test)
callback(info, size, context_ptr.*) catch |err| return @intFromError(err);
^
../ldso/dynlink.c:2413:9: 0x2d987fcf in dl_iterate_phdr (../ldso/dynlink.c)
/home/alexrp/Source/ziglang/zig/lib/std/posix.zig:5806:39: 0x1d0e56b in dl_iterate_phdr__anon_1300884 (test)
switch (system.dl_iterate_phdr(struct {
^
/home/alexrp/Source/ziglang/zig/lib/std/posix/test.zig:376:30: 0x1d0e397 in test.dl_iterate_phdr (test)
try posix.dl_iterate_phdr(&counter, IterFnError, iter_fn);
^
/home/alexrp/Source/ziglang/zig/lib/compiler/test_runner.zig:138:29: 0x566c9b in mainServer (test)
test_fn.func() catch |err| switch (err) {
^
/home/alexrp/Source/ziglang/zig/lib/compiler/test_runner.zig:67:26: 0x56236f in main (test)
return mainServer() catch @panic("internal test runner failure");
^
/home/alexrp/Source/ziglang/zig/lib/std/start.zig:618:22: 0x56173b in callMain (test)
root.main();
^
Also hangs:
├─ [512/2931] run test std-mips-linux-musleabi-mips32r
│ └─ heap.test.StackFallbackAllocator
├─ [512/2933] run test std-x86-linux-musl-pentium4-Deb
│ └─ heap.test.StackFallbackAllocator
└─ [512/2933] run test std-mipsel-linux-musleabi-mips3
└─ heap.test.StackFallbackAllocator
To reproduce:
- Build glibc and/or musl libcs: https://codeberg.org/ziglang/infra/src/branch/master/building-libcs.md
zig build -fqemu --libc-runtimes $HOME/.local/libc test-std -Dtest-extra-targets -Dtest-target-filter=mips -Dtest-target-filter=x86-