Auto merge of rust-lang#109803 - matthiaskrgr:rollup-mojot7k, r=matthiaskrgr

Rollup of 4 pull requests

Successful merges:

 - rust-lang#109598 (Improve documentation for str::replace() and str::replacen())
 - rust-lang#109779 (Update gccjit and remove libc 0.1 dependency)
 - rust-lang#109784 (Refactor glibc time64 support, riscv32 always has 64-bit `time_t`)
 - rust-lang#109793 (add comment to `impl !Error for &str`)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

compiler/rustc_codegen_gcc/Cargo.lock

@@ -35,17 +35,17 @@ dependencies = [
 [[package]]
 name = "gccjit"
 version = "1.0.0"
-source = "git+https://github.com/antoyo/gccjit.rs#eefb8c662d61477f34b7c32d26bcda5f1ef08432"
+source = "git+https://github.com/antoyo/gccjit.rs#fe242b7eb26980e6c78859d51c8d4cc1e43381a3"
 dependencies = [
  "gccjit_sys",
 ]
 
 [[package]]
 name = "gccjit_sys"
 version = "0.0.1"
-source = "git+https://github.com/antoyo/gccjit.rs#eefb8c662d61477f34b7c32d26bcda5f1ef08432"
+source = "git+https://github.com/antoyo/gccjit.rs#fe242b7eb26980e6c78859d51c8d4cc1e43381a3"
 dependencies = [
- "libc 0.1.12",
+ "libc",
 ]
 
 [[package]]
@@ -64,7 +64,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7fcd999463524c52659517fe2cea98493cfe485d10565e7b0fb07dbba7ad2753"
 dependencies = [
  "cfg-if",
- "libc 0.2.112",
+ "libc",
  "wasi",
 ]
 
@@ -74,7 +74,7 @@ version = "0.1.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
 dependencies = [
- "libc 0.2.112",
+ "libc",
 ]
 
 [[package]]
@@ -85,20 +85,14 @@ checksum = "96bd995a092cac79868250589869b5a5d656b02a02bd74c8ebdc566dc7203090"
 dependencies = [
  "fm",
  "getopts",
- "libc 0.2.112",
+ "libc",
  "num_cpus",
  "termcolor",
  "threadpool",
  "wait-timeout",
  "walkdir",
 ]
 
-[[package]]
-name = "libc"
-version = "0.1.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e32a70cf75e5846d53a673923498228bbec6a8624708a9ea5645f075d6276122"
-
 [[package]]
 name = "libc"
 version = "0.2.112"
@@ -118,7 +112,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "05499f3756671c15885fee9034446956fff3f243d6077b91e5767df161f766b3"
 dependencies = [
  "hermit-abi",
- "libc 0.2.112",
+ "libc",
 ]
 
 [[package]]
@@ -133,7 +127,7 @@ version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
 dependencies = [
- "libc 0.2.112",
+ "libc",
  "rand_chacha",
  "rand_core",
  "rand_hc",
@@ -234,7 +228,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dac1c663cfc93810f88aed9b8941d48cabf856a1b111c29a40439018d870eb22"
 dependencies = [
  "cfg-if",
- "libc 0.2.112",
+ "libc",
  "rand",
  "redox_syscall",
  "remove_dir_all",
@@ -271,7 +265,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f200f5b12eb75f8c1ed65abd4b2db8a6e1b138a20de009dacee265a2498f3f6"
 dependencies = [
- "libc 0.2.112",
+ "libc",
 ]
 
 [[package]]

library/alloc/src/str.rs

@@ -256,7 +256,7 @@ impl str {
     /// assert_eq!("than an old", s.replace("is", "an"));
     /// ```
     ///
-    /// When the pattern doesn't match:
+    /// When the pattern doesn't match, it returns this string slice as [`String`]:
     ///
     /// ```
     /// let s = "this is old";
@@ -297,7 +297,7 @@ impl str {
     /// assert_eq!("foo foo new23 foo", s.replacen(char::is_numeric, "new", 1));
     /// ```
     ///
-    /// When the pattern doesn't match:
+    /// When the pattern doesn't match, it returns this string slice as [`String`]:
     ///
     /// ```
     /// let s = "this is old";

library/core/src/str/mod.rs

@@ -2655,5 +2655,6 @@ impl_fn_for_zst! {
     };
 }
 
+// This is required to make `impl From<&str> for Box<dyn Error>` and `impl<E> From<E> for Box<dyn Error>` not overlap.
 #[stable(feature = "rust1", since = "1.0.0")]
 impl !crate::error::Error for &str {}

library/std/src/sys/unix/time.rs

@@ -174,6 +174,34 @@ impl From<libc::timespec> for Timespec {
     }
 }
 
+#[cfg(all(
+    target_os = "linux",
+    target_env = "gnu",
+    target_pointer_width = "32",
+    not(target_arch = "riscv32")
+))]
+#[repr(C)]
+pub(in crate::sys::unix) struct __timespec64 {
+    pub(in crate::sys::unix) tv_sec: i64,
+    #[cfg(target_endian = "big")]
+    _padding: i32,
+    pub(in crate::sys::unix) tv_nsec: i32,
+    #[cfg(target_endian = "little")]
+    _padding: i32,
+}
+
+#[cfg(all(
+    target_os = "linux",
+    target_env = "gnu",
+    target_pointer_width = "32",
+    not(target_arch = "riscv32")
+))]
+impl From<__timespec64> for Timespec {
+    fn from(t: __timespec64) -> Timespec {
+        Timespec::new(t.tv_sec, t.tv_nsec.into())
+    }
+}
+
 #[cfg(any(
     all(target_os = "macos", any(not(target_arch = "aarch64"))),
     target_os = "ios",
@@ -352,29 +380,23 @@ mod inner {
     impl Timespec {
         pub fn now(clock: libc::clockid_t) -> Timespec {
             // Try to use 64-bit time in preparation for Y2038.
-            #[cfg(all(target_os = "linux", target_env = "gnu", target_pointer_width = "32"))]
+            #[cfg(all(
+                target_os = "linux",
+                target_env = "gnu",
+                target_pointer_width = "32",
+                not(target_arch = "riscv32")
+            ))]
             {
                 use crate::sys::weak::weak;
 
                 // __clock_gettime64 was added to 32-bit arches in glibc 2.34,
                 // and it handles both vDSO calls and ENOSYS fallbacks itself.
-                weak!(fn __clock_gettime64(libc::clockid_t, *mut __timespec64) -> libc::c_int);
-
-                #[repr(C)]
-                struct __timespec64 {
-                    tv_sec: i64,
-                    #[cfg(target_endian = "big")]
-                    _padding: i32,
-                    tv_nsec: i32,
-                    #[cfg(target_endian = "little")]
-                    _padding: i32,
-                }
+                weak!(fn __clock_gettime64(libc::clockid_t, *mut super::__timespec64) -> libc::c_int);
 
                 if let Some(clock_gettime64) = __clock_gettime64.get() {
                     let mut t = MaybeUninit::uninit();
                     cvt(unsafe { clock_gettime64(clock, t.as_mut_ptr()) }).unwrap();
-                    let t = unsafe { t.assume_init() };
-                    return Timespec::new(t.tv_sec, t.tv_nsec as i64);
+                    return Timespec::from(unsafe { t.assume_init() });
                 }
             }