std.fs.Dir.copyFile fails on linux #2

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opened 2025-12-05 23:01:37 +00:00 by remi · 3 comments

remi commented

2025-12-05 23:01:37 +00:00

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pdex.so!compiler_rt.memcpy.copyRange4() (/home/user/.zvm/0.15.2/lib/compiler_rt/memcpy.zig:191)
pdex.so!compiler_rt.memcpy.copyLessThan16() (/home/user/.zvm/0.15.2/lib/compiler_rt/memcpy.zig:80)
pdex.so!compiler_rt.memcpy.copySmallLength() (/home/user/.zvm/0.15.2/lib/compiler_rt/memcpy.zig:56)
pdex.so!compiler_rt.memcpy.memcpyFast(u8 * dest, u8 * src, usize len) (/home/user/.zvm/0.15.2/lib/compiler_rt/memcpy.zig:42)
pdex.so!Random.ChaCha.fill (Unknown Source:0)
pdex.so!crypto.tlcsprng.fillWithCsprng (Unknown Source:0)
pdex.so!crypto.tlcsprng.tlsCsprngFill (Unknown Source:0)
pdex.so!Random.bytes (Unknown Source:0)
pdex.so!Random.int__anon_24257 (Unknown Source:0)
pdex.so!fs.AtomicFile.init (Unknown Source:0)
pdex.so!fs.Dir.atomicFile (Unknown Source:0)
pdex.so!fs.Dir.copyFile (Unknown Source:0)
pdex.so!hot_reload.load_new_code (Unknown Source:0)
pdex.so!hot_reload.update (Unknown Source:0)
pdex.so!update_and_render (Unknown Source:0)
[Unknown/Just-In-Time compiled code] (Unknown Source:0)
libglib-2.0.so.0!g_main_loop_run (Unknown Source:0)
libgtk-3.so.0!gtk_main (Unknown Source:0)
[Unknown/Just-In-Time compiled code] (Unknown Source:0)
libc.so.6!__libc_start_main (Unknown Source:0)
[Unknown/Just-In-Time compiled code] (Unknown Source:0)

For some reason using std.fs.Dir.copyFile causes a memcpy call where destination is 0

```pdex.so!compiler_rt.memcpy.copyFixedLength() (/home/user/.zvm/0.15.2/lib/compiler_rt/memcpy.zig:170) pdex.so!compiler_rt.memcpy.copyRange4() (/home/user/.zvm/0.15.2/lib/compiler_rt/memcpy.zig:191) pdex.so!compiler_rt.memcpy.copyLessThan16() (/home/user/.zvm/0.15.2/lib/compiler_rt/memcpy.zig:80) pdex.so!compiler_rt.memcpy.copySmallLength() (/home/user/.zvm/0.15.2/lib/compiler_rt/memcpy.zig:56) pdex.so!compiler_rt.memcpy.memcpyFast(u8 * dest, u8 * src, usize len) (/home/user/.zvm/0.15.2/lib/compiler_rt/memcpy.zig:42) pdex.so!Random.ChaCha.fill (Unknown Source:0) pdex.so!crypto.tlcsprng.fillWithCsprng (Unknown Source:0) pdex.so!crypto.tlcsprng.tlsCsprngFill (Unknown Source:0) pdex.so!Random.bytes (Unknown Source:0) pdex.so!Random.int__anon_24257 (Unknown Source:0) pdex.so!fs.AtomicFile.init (Unknown Source:0) pdex.so!fs.Dir.atomicFile (Unknown Source:0) pdex.so!fs.Dir.copyFile (Unknown Source:0) pdex.so!hot_reload.load_new_code (Unknown Source:0) pdex.so!hot_reload.update (Unknown Source:0) pdex.so!update_and_render (Unknown Source:0) [Unknown/Just-In-Time compiled code] (Unknown Source:0) libglib-2.0.so.0!g_main_loop_run (Unknown Source:0) libgtk-3.so.0!gtk_main (Unknown Source:0) [Unknown/Just-In-Time compiled code] (Unknown Source:0) libc.so.6!__libc_start_main (Unknown Source:0) [Unknown/Just-In-Time compiled code] (Unknown Source:0) ``` For some reason using std.fs.Dir.copyFile causes a memcpy call where destination is 0

remi commented

2025-12-07 20:10:19 +00:00

Author

Owner

interestingly when writing my own copy function std.DynLib returns error.Unexpected for already open files? which is confusing?

remi commented

2025-12-09 08:56:25 +00:00

Author

Owner

okay its this function? std.crypto.random.int(u32)

remi commented

2025-12-09 09:10:45 +00:00

Author

Owner

Okay so basically:

std.crypto.random.int fails for some reason
also we have to link libc

This error message is probably related [3059:3059:20251209,083037.435385:ERROR elf_dynamic_array_reader.h:64] tag not found

Okay so basically: - std.crypto.random.int fails for some reason - also we have to link libc This error message is probably related [3059:3059:20251209,083037.435385:ERROR elf_dynamic_array_reader.h:64] tag not found

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remi/ultimate-playdate-zig#2

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