When spawning a process, stdio file descriptors can be configured to be ignored,
which basically means that they'll be closed. Currently this is done by
literally closing the file descriptors in the child, but this can have adverse
side effects if the child process then opens a new file descriptor, assigning it
to a stdio number.
To work around the problems of the child, this commit alters the process
spawning code to map stdio fds to /dev/null on unix (and a similar equivalent on
windows) when they are specified as being ignored. This should allow spawned
programs to have more expected behavior when opening new files.
Closes#14456
This is an attempt of fixing #12925.
This PR moves almost all trait implementations for primitive types ((), bool, char, i*, u*, f*) near trait definitions. Only Float trait implementations weren't moved because they heavily rely on constants defined in f32.rs and f64.rs.
Some trait implementations had cfg(not(test)) attribute. I suspect it's because of issue 2912.
Still, someone who knows the problem better should probably check this code.
Closes#12925
This was required to get ./configure to work on my armv7 test machine.
I haven't found anything sane to feature gate `hf` on that's pokable from the context of the configure script.
It also seems that gcc doesn't work on armv7 by default (rust wants to pass it `-m32` which isn't supported), would it be preferential to make the default `--enable-clang` on arm, or remove the `-m32` flag on that platform?
Previously this was adding one-too-many `..`s to the path for the
`gotosrc=...` links for local crates. Also, the `root_path` already ends
in `/`s so a trailing / shouldn't be added after the root (some servers
treat `...//...` different to `.../...` including the one running
doc.rust-lang.org).
Previously this was adding one-too-many `..`s to the path for the
`gotosrc=...` links for local crates. Also, the `root_path` already ends
in `/`s so a trailing / shouldn't be added after the root (some servers
treat `...//...` different to `.../...` including the one running
doc.rust-lang.org).
Because IPv4 address conversion doesn't consider big-endian target, I add functions to handle that.
These function names may need to be changed, but I can't come up with a good one.
This commit moves reflection (as well as the {:?} format modifier) to a new
libdebug crate, all of which is marked experimental.
This is a breaking change because it now requires the debug crate to be
explicitly linked if the :? format qualifier is used. This means that any code
using this feature will have to add `extern crate debug;` to the top of the
crate. Any code relying on reflection will also need to do this.
Closes#12019
[breaking-change]
This commit moves reflection (as well as the {:?} format modifier) to a new
libdebug crate, all of which is marked experimental.
This is a breaking change because it now requires the debug crate to be
explicitly linked if the :? format qualifier is used. This means that any code
using this feature will have to add `extern crate debug;` to the top of the
crate. Any code relying on reflection will also need to do this.
Closes#12019
[breaking-change]
My main goals were:
- be clear when we talk about "references" and "pointers"
- remove Managed boxes completely and the concept of GC.
https://github.com/mozilla/rust/issues/13987
When spawning a process, stdio file descriptors can be configured to be ignored,
which basically means that they'll be closed. Currently this is done by
literally closing the file descriptors in the child, but this can have adverse
side effects if the child process then opens a new file descriptor, assigning it
to a stdio number.
To work around the problems of the child, this commit alters the process
spawning code to map stdio fds to /dev/null on unix (and a similar equivalent on
windows) when they are specified as being ignored. This should allow spawned
programs to have more expected behavior when opening new files.
Closes#14456
Change `for` desugaring & make refutable pattern errors more precise
This changes for to desugar to the `let`-based pattern match as described in #14390, and adjusts the compiler to use this information for error messages that even mention that it's in a `for` loop.
Also, it makes the compiler record the exact positions of refutable parts of a pattern, to point to exactly them in error messages.
This ensures that a public typedef to a private item is ensured to be public in
terms of linkage. This affects both the visibility of the library's symbols as
well as other lints based on privacy (dead_code for example).
Closes#14421Closes#14422
This ensures that a public typedef to a private item is ensured to be public in
terms of linkage. This affects both the visibility of the library's symbols as
well as other lints based on privacy (dead_code for example).
Closes#14421Closes#14422
