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Use Default visibility for rustc-generated C symbol declarations#131519

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davidlattimore:intrinsics-default-vis
Oct 11, 2024
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Use Default visibility for rustc-generated C symbol declarations#131519
bors merged 1 commit intorust-lang:masterfrom
davidlattimore:intrinsics-default-vis

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@davidlattimore davidlattimore commented Oct 10, 2024

Non-default visibilities should only be used for definitions, not declarations, otherwise linking can fail.

This is based on #123994.

Issue #123427

When I changed default-hidden-visibility to default-visibility in #130005, I updated all places in the code that used default-hidden-visibility, replicating the hidden-visibility bug to also happen for protected visibility.

Without this change, trying to build rustc with -Z default-visibility=protected fails with a link error.

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r? @Nadrieril

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@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Oct 10, 2024
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@davidlattimore @chbaker0
Use Default visibility for rustc-generated C symbol declarations
42c0494 
Non-default visibilities should only be used for definitions, not
declarations, otherwise linking can fail.

Co-authored-by: Collin Baker <collinbaker@chromium.org>
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Nadrieril commented Oct 11, 2024

r? compiler

@rustbot rustbot assigned estebank and unassigned Nadrieril Oct 11, 2024
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I'm no expert but this makes sense to me.

It's also what clang is doing, godbolt.

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Urgau commented Oct 11, 2024

r? @Urgau
@bors r+

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bors commented Oct 11, 2024

📌 Commit 42c0494 has been approved by Urgau

It is now in the queue for this repository.

@rustbot rustbot assigned Urgau and unassigned estebank Oct 11, 2024
@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Oct 11, 2024
@matthiaskrgr matthiaskrgr mentioned this pull request Oct 11, 2024
Merged
bors added a commit to rust-lang-ci/rust that referenced this pull request Oct 11, 2024
@bors
Auto merge of rust-lang#131547 - matthiaskrgr:rollup-ui4p744, r=matth…
01e2fff 
…iaskrgr

Rollup of 6 pull requests

Successful merges:

 - rust-lang#129079 (Create `_imp__` symbols also when doing ThinLTO)
 - rust-lang#131208 (ABI: Pass aggregates by value on AIX)
 - rust-lang#131394 (fix(rustdoc): add space between struct fields and their descriptions)
 - rust-lang#131519 (Use Default visibility for rustc-generated C symbol declarations)
 - rust-lang#131541 (compiletest: Extract auxiliary-crate properties to their own module/struct)
 - rust-lang#131542 (next-solver: remove outdated FIXMEs)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 33b1264 into rust-lang:master Oct 11, 2024
@rustbot rustbot added this to the 1.83.0 milestone Oct 11, 2024
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Oct 11, 2024
@rust-timer
Unrolled build for rust-lang#131519
032ef50 
Rollup merge of rust-lang#131519 - davidlattimore:intrinsics-default-vis, r=Urgau

Use Default visibility for rustc-generated C symbol declarations

Non-default visibilities should only be used for definitions, not declarations, otherwise linking can fail.

This is based on rust-lang#123994.

Issue rust-lang#123427

When I changed `default-hidden-visibility` to `default-visibility` in rust-lang#130005, I updated all places in the code that used `default-hidden-visibility`, replicating the hidden-visibility bug to also happen for protected visibility.

Without this change, trying to build rustc with `-Z default-visibility=protected` fails with a link error.
This was referenced Oct 25, 2024
Closed
Open
github-actions bot pushed a commit to kaidokert/chrome_base_mirror that referenced this pull request Oct 30, 2024
@danakj @copybara-github
Set Rust symbol visibility to hidden when C++ symbols are
87da2f7 
This depended on rust-lang/rust#131519
rolling into the Rust compiler to fix builtins/intrinisics,
which was merged in 33b1264540b.

Remove ASAN ODR exceptions for Rust globals as they are no longer
walked twice incorrectly when they are hidden.

Disable the rust logging test in component builds for all platforms
not just for Windows, now that symbol visibility is the same for
all platforms. See https://crbug.com/374023535#comment13

Bug: 41484256, 40274892, 374023535
Fixed: 40278279
Cq-Include-Trybots: luci.chromium.try:linux-official,mac-official,win-official,win32-official
Cq-Include-Trybots: luci.chromium.try:linux-asan-rel,mac-asan-rel,win-asan-rel
Cq-Include-Trybots: luci.chromium.try:linux_chromium_dbg_ng
Change-Id: I976ef679961e9db5a91bcc74f559ebbcc0bf058b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5966273
Commit-Queue: danakj <danakj@chromium.org>
Reviewed-by: Arthur Eubanks <aeubanks@google.com>
Cr-Commit-Position: refs/heads/main@{#1375460}
NOKEYCHECK=True
GitOrigin-RevId: ee3900fd57b3c580aefff15c64052904d81b7760
@anforowicz anforowicz mentioned this pull request Oct 31, 2024
Open
jrguzman-ms pushed a commit to msft-mirror-aosp/platform.external.libchrome that referenced this pull request Nov 20, 2024
@danakj
Set Rust symbol visibility to hidden when C++ symbols are
9f379b2 
This depended on rust-lang/rust#131519
rolling into the Rust compiler to fix builtins/intrinisics,
which was merged in 33b1264540b.

Remove ASAN ODR exceptions for Rust globals as they are no longer
walked twice incorrectly when they are hidden.

Disable the rust logging test in component builds for all platforms
not just for Windows, now that symbol visibility is the same for
all platforms. See https://crbug.com/374023535#comment13

Bug: 41484256, 40274892, 374023535
Fixed: 40278279
Cq-Include-Trybots: luci.chromium.try:linux-official,mac-official,win-official,win32-official
Cq-Include-Trybots: luci.chromium.try:linux-asan-rel,mac-asan-rel,win-asan-rel
Cq-Include-Trybots: luci.chromium.try:linux_chromium_dbg_ng
Change-Id: I976ef679961e9db5a91bcc74f559ebbcc0bf058b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5966273
Commit-Queue: danakj <danakj@chromium.org>
Reviewed-by: Arthur Eubanks <aeubanks@google.com>
Cr-Commit-Position: refs/heads/main@{#1375460}


CrOS-Libchrome-Original-Commit: ee3900fd57b3c580aefff15c64052904d81b7760
@MaxIhlenfeldt MaxIhlenfeldt mentioned this pull request Feb 6, 2025
Merged
adalessandro added a commit to adalessandro/meta-browser that referenced this pull request Feb 7, 2025
@adalessandro
chromium: [PATCH] Revert "Set Rust symbol visibility to hidden when ..."
6a0c61a 
This reverts chromium commit ee3900fd57b3c580aefff15c64052904d81b7760.
* Change-Id: https://crrev.com/c/5966273

Fixes the following compilation error:

```
| FAILED: obj/third_party/rust/ryu/v1/lib/libryu_lib.rlib
[...]
| error: unknown unstable option: `default-visibility`
```

This patch will be dropped once Rust >= 1.83 is available, which
includes:
* rust-lang/rust#130005 [0]
* rust-lang/rust#131519 [1]

Note that currently meta-lts-mixins [2] provides the following versions:
* kirkstone: `1.80.1`
* scarthgap: `1.81.0`

[0] rust-lang/rust#130005
[1] rust-lang/rust#131519
[2] https://git.yoctoproject.org/meta-lts-mixins

Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
adalessandro added a commit to adalessandro/meta-browser that referenced this pull request Feb 10, 2025
@adalessandro
chromium: [PATCH] Revert "Set Rust symbol visibility to hidden when ..."
7204798 
This reverts chromium commit ee3900fd57b3c580aefff15c64052904d81b7760.
* Change-Id: https://crrev.com/c/5966273

Fixes the following compilation error:

```
| FAILED: obj/third_party/rust/ryu/v1/lib/libryu_lib.rlib
[...]
| error: unknown unstable option: `default-visibility`
```

This patch will be dropped once Rust >= 1.83 is available, which
includes:
* rust-lang/rust#130005 [0]
* rust-lang/rust#131519 [1]

Note that currently meta-lts-mixins [2] provides the following versions:
* kirkstone: `1.80.1`
* scarthgap: `1.81.0`

[0] rust-lang/rust#130005
[1] rust-lang/rust#131519
[2] https://git.yoctoproject.org/meta-lts-mixins

Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
adalessandro added a commit to adalessandro/meta-browser that referenced this pull request Feb 11, 2025
@adalessandro
chromium: [PATCH] Revert "Set Rust symbol visibility to hidden when ..."
301eb30 
This reverts chromium commit ee3900fd57b3c580aefff15c64052904d81b7760.
* Change-Id: https://crrev.com/c/5966273

Fixes the following compilation error:

```
| FAILED: obj/third_party/rust/ryu/v1/lib/libryu_lib.rlib
[...]
| error: unknown unstable option: `default-visibility`
```

This patch will be dropped once Rust >= 1.83 is available, which
includes:
* rust-lang/rust#130005 [0]
* rust-lang/rust#131519 [1]

Note that currently meta-lts-mixins [2] provides the following versions:
* kirkstone: `1.80.1`
* scarthgap: `1.81.0`

[0] rust-lang/rust#130005
[1] rust-lang/rust#131519
[2] https://git.yoctoproject.org/meta-lts-mixins

Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
@bjorn3 bjorn3 mentioned this pull request Aug 28, 2025
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