[Bug rust/124233] [16 Regression] MinGW-w64 gcc/rust build issues due to missing open_memstream() since r16-2986

brechtsanders at users dot sourceforge.net gcc-bugzilla@gcc.gnu.org
Tue Mar 10 23:14:32 GMT 2026


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124233

--- Comment #5 from Brecht Sanders <brechtsanders at users dot sourceforge.net> ---
Tried again with the latest GCC 16 snapshot and now the result is:
```
crab1.exe: error: failed to locate crate 'core'
crab1.exe: error: unknown crate 'core'
crab1.exe: error: unknown crate 'core'
-:2:1: error: could not resolve macro invocation 'println' [E0433]
crab1.exe: error: unknown crate 'core'
```

How do I build the core Rust library with/for gccrs ?

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