4 files changed, 8 insertions, 8 deletions
diff --git a/library/std/src/sys/pal/solid/abi/fs.rs b/library/std/src/sys/pal/solid/abi/fs.rs
index 6864a3e7745..7f2b1f83e85 100644
--- a/library/std/src/sys/pal/solid/abi/fs.rs
+++ b/library/std/src/sys/pal/solid/abi/fs.rs
@@ -31,7 +31,7 @@ pub const DT_WHT: c_uchar = 14;
 
 pub type S_DIR = c_int;
 
-extern "C" {
+unsafe extern "C" {
     pub fn SOLID_FS_Open(fd: *mut c_int, path: *const c_char, mode: c_int) -> c_int;
     pub fn SOLID_FS_Close(fd: c_int) -> c_int;
     pub fn SOLID_FS_Read(fd: c_int, buf: *mut u8, size: usize, result: *mut usize) -> c_int;
diff --git a/library/std/src/sys/pal/solid/abi/mod.rs b/library/std/src/sys/pal/solid/abi/mod.rs
index 4d097057217..819f93f4074 100644
--- a/library/std/src/sys/pal/solid/abi/mod.rs
+++ b/library/std/src/sys/pal/solid/abi/mod.rs
@@ -33,27 +33,27 @@ pub struct SOLID_RTC_TIME {
     pub tm_wday: c_int,
 }
 
-extern "C" {
+unsafe extern "C" {
     pub fn SOLID_RTC_ReadTime(time: *mut SOLID_RTC_TIME) -> c_int;
 }
 
 // `solid_log.h`
-extern "C" {
+unsafe extern "C" {
     pub fn SOLID_LOG_write(s: *const u8, l: usize);
 }
 
 // `solid_mem.h`
-extern "C" {
+unsafe extern "C" {
     pub fn SOLID_TLS_AddDestructor(id: i32, dtor: unsafe extern "C" fn(*mut u8));
 }
 
 // `solid_rng.h`
-extern "C" {
+unsafe extern "C" {
     pub fn SOLID_RNG_SampleRandomBytes(buffer: *mut u8, length: usize) -> c_int;
 }
 
 // `rwlock.h`
-extern "C" {
+unsafe extern "C" {
     pub fn rwl_loc_rdl(id: ID) -> ER;
     pub fn rwl_loc_wrl(id: ID) -> ER;
     pub fn rwl_ploc_rdl(id: ID) -> ER;
diff --git a/library/std/src/sys/pal/solid/abi/sockets.rs b/library/std/src/sys/pal/solid/abi/sockets.rs
index 3c9e3f9ffb9..80802dd42e2 100644
--- a/library/std/src/sys/pal/solid/abi/sockets.rs
+++ b/library/std/src/sys/pal/solid/abi/sockets.rs
@@ -158,7 +158,7 @@ pub struct fd_set {
     pub fds: [c_int; SOLID_NET_FD_SETSIZE],
 }
 
-extern "C" {
+unsafe extern "C" {
     #[link_name = "SOLID_NET_StrError"]
     pub fn strerror(errnum: c_int) -> *const c_char;
 
diff --git a/library/std/src/sys/pal/solid/os.rs b/library/std/src/sys/pal/solid/os.rs
index 57c28aed3b2..e3b2e0aa50f 100644
--- a/library/std/src/sys/pal/solid/os.rs
+++ b/library/std/src/sys/pal/solid/os.rs
@@ -129,7 +129,7 @@ impl Iterator for Env {
 /// Returns a vector of (variable, value) byte-vector pairs for all the
 /// environment variables of the current process.
 pub fn env() -> Env {
-    extern "C" {
+    unsafe extern "C" {
         static mut environ: *const *const c_char;
     }