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Auto merge of #3455 - RalfJung:extern-static, r=RalfJung

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make 'missing extern static' error consistent with missing shim

What's relevant is mostly the link name of the external symbol, not its Rust path.
This commit is contained in:
bors 2024-04-06 12:10:44 +00:00
commit f7feabc0e3
6 changed files with 11 additions and 15 deletions
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8
src/tools/miri/src/machine.rs
View file

@ -1066,7 +1066,7 @@ impl<'mir, 'tcx> Machine<'mir, 'tcx> for MiriMachine<'mir, 'tcx> {
let extern_decl_layout = ecx.tcx.layout_of(ty::ParamEnv::empty().and(def_ty)).unwrap();
if extern_decl_layout.size != shim_size || extern_decl_layout.align.abi != shim_align {
throw_unsup_format!(
"`extern` static `{name}` from crate `{krate}` has been declared \
"extern static `{link_name}` has been declared as `{krate}::{name}` \
with a size of {decl_size} bytes and alignment of {decl_align} bytes, \
but Miri emulates it via an extern static shim \
with a size of {shim_size} bytes and alignment of {shim_align} bytes",
@ -1080,11 +1080,7 @@ impl<'mir, 'tcx> Machine<'mir, 'tcx> for MiriMachine<'mir, 'tcx> {
}
Ok(ptr)
} else {
throw_unsup_format!(
"`extern` static `{name}` from crate `{krate}` is not supported by Miri",
name = ecx.tcx.def_path_str(def_id),
krate = ecx.tcx.crate_name(def_id.krate),
)
throw_unsup_format!("extern static `{link_name}` is not supported by Miri",)
}
}

4
src/tools/miri/tests/fail/extern_static.stderr
View file

@ -1,8 +1,8 @@
error: unsupported operation: `extern` static `FOO` from crate `extern_static` is not supported by Miri
error: unsupported operation: extern static `FOO` is not supported by Miri
--> $DIR/extern_static.rs:LL:CC
|
LL | let _val = unsafe { std::ptr::addr_of!(FOO) };
| ^^^ `extern` static `FOO` from crate `extern_static` is not supported by Miri
| ^^^ extern static `FOO` is not supported by Miri
|
= help: this is likely not a bug in the program; it indicates that the program performed an operation that the interpreter does not support
= note: BACKTRACE:

4
src/tools/miri/tests/fail/extern_static_in_const.stderr
View file

@ -1,8 +1,8 @@
error: unsupported operation: `extern` static `E` from crate `extern_static_in_const` is not supported by Miri
error: unsupported operation: extern static `E` is not supported by Miri
--> $DIR/extern_static_in_const.rs:LL:CC
|
LL | let _val = X;
| ^ `extern` static `E` from crate `extern_static_in_const` is not supported by Miri
| ^ extern static `E` is not supported by Miri
|
= help: this is likely not a bug in the program; it indicates that the program performed an operation that the interpreter does not support
= note: BACKTRACE:

2
src/tools/miri/tests/fail/extern_static_wrong_size.rs
View file

@ -6,5 +6,5 @@ extern "C" {
}
fn main() {
let _val = unsafe { environ }; //~ ERROR: /has been declared with a size of 1 bytes and alignment of 1 bytes, but Miri emulates it via an extern static shim with a size of [48] bytes and alignment of [48] bytes/
let _val = unsafe { environ }; //~ ERROR: /with a size of 1 bytes and alignment of 1 bytes, but Miri emulates it via an extern static shim with a size of [48] bytes and alignment of [48] bytes/
}

4
src/tools/miri/tests/fail/extern_static_wrong_size.stderr
View file

@ -1,8 +1,8 @@
error: unsupported operation: `extern` static `environ` from crate `extern_static_wrong_size` has been declared with a size of 1 bytes and alignment of 1 bytes, but Miri emulates it via an extern static shim with a size of N bytes and alignment of N bytes
error: unsupported operation: extern static `environ` has been declared as `extern_static_wrong_size::environ` with a size of 1 bytes and alignment of 1 bytes, but Miri emulates it via an extern static shim with a size of N bytes and alignment of N bytes
--> $DIR/extern_static_wrong_size.rs:LL:CC
|
LL | let _val = unsafe { environ };
| ^^^^^^^ `extern` static `environ` from crate `extern_static_wrong_size` has been declared with a size of 1 bytes and alignment of 1 bytes, but Miri emulates it via an extern static shim with a size of N bytes and alignment of N bytes
| ^^^^^^^ extern static `environ` has been declared as `extern_static_wrong_size::environ` with a size of 1 bytes and alignment of 1 bytes, but Miri emulates it via an extern static shim with a size of N bytes and alignment of N bytes
|
= help: this is likely not a bug in the program; it indicates that the program performed an operation that the interpreter does not support
= note: BACKTRACE:

4
src/tools/miri/tests/fail/issue-miri-3288-ice-symbolic-alignment-extern-static.stderr
View file

@ -1,8 +1,8 @@
error: unsupported operation: `extern` static `_dispatch_queue_attr_concurrent` from crate `issue_miri_3288_ice_symbolic_alignment_extern_static` is not supported by Miri
error: unsupported operation: extern static `_dispatch_queue_attr_concurrent` is not supported by Miri
--> $DIR/issue-miri-3288-ice-symbolic-alignment-extern-static.rs:LL:CC
|
LL | let _val = *DISPATCH_QUEUE_CONCURRENT;
| ^^^^^^^^^^^^^^^^^^^^^^^^^ `extern` static `_dispatch_queue_attr_concurrent` from crate `issue_miri_3288_ice_symbolic_alignment_extern_static` is not supported by Miri
| ^^^^^^^^^^^^^^^^^^^^^^^^^ extern static `_dispatch_queue_attr_concurrent` is not supported by Miri
|
= help: this is likely not a bug in the program; it indicates that the program performed an operation that the interpreter does not support
= note: BACKTRACE: