[GCC-11,committed] libphobos: Backport library and bindings fixes from mainline

diff --git a/libphobos/libdruntime/core/stdc/fenv.d b/libphobos/libdruntime/core/stdc/fenv.d
index 3002c022613..665f383167d 100644
--- a/libphobos/libdruntime/core/stdc/fenv.d
+++ b/libphobos/libdruntime/core/stdc/fenv.d
@@ -481,7 +481,7 @@  else version (CRuntime_UClibc)
 
         alias fexcept_t = ushort;
     }
-    else version (MIPS32)
+    else version (MIPS_Any)
     {
         struct fenv_t
         {
diff --git a/libphobos/libdruntime/core/stdc/math.d b/libphobos/libdruntime/core/stdc/math.d
index 2de6e579575..2a965444f2c 100644
--- a/libphobos/libdruntime/core/stdc/math.d
+++ b/libphobos/libdruntime/core/stdc/math.d
@@ -113,7 +113,7 @@  else version (CRuntime_UClibc)
         ///
         enum int FP_ILOGBNAN      = int.min;
     }
-    else version (MIPS32)
+    else version (MIPS_Any)
     {
         ///
         enum int FP_ILOGB0        = -int.max;
diff --git a/libphobos/libdruntime/core/sys/posix/dlfcn.d b/libphobos/libdruntime/core/sys/posix/dlfcn.d
index f6476ec3106..ff24896cdb6 100644
--- a/libphobos/libdruntime/core/sys/posix/dlfcn.d
+++ b/libphobos/libdruntime/core/sys/posix/dlfcn.d
@@ -316,7 +316,7 @@  else version (CRuntime_UClibc)
         enum RTLD_LOCAL             = 0;
         enum RTLD_NODELETE          = 0x01000;
     }
-    else version (MIPS32)
+    else version (MIPS_Any)
     {
         enum RTLD_LAZY              = 0x0001;
         enum RTLD_NOW               = 0x0002;
diff --git a/libphobos/libdruntime/core/sys/posix/setjmp.d b/libphobos/libdruntime/core/sys/posix/setjmp.d
index b98d321a883..547e52e8edc 100644
--- a/libphobos/libdruntime/core/sys/posix/setjmp.d
+++ b/libphobos/libdruntime/core/sys/posix/setjmp.d
@@ -366,6 +366,22 @@  else version (CRuntime_UClibc)
                 double[6] __fpregs;
         }
     }
+    else version (MIPS64)
+    {
+        struct __jmp_buf
+        {
+            long __pc;
+            long __sp;
+            long[8] __regs;
+            long __fp;
+            long __gp;
+            int __fpc_csr;
+            version (MIPS_N64)
+                double[8] __fpregs;
+            else
+                double[6] __fpregs;
+        }
+    }
     else
         static assert(0, "unimplemented");
 
diff --git a/libphobos/libdruntime/core/sys/posix/sys/types.d b/libphobos/libdruntime/core/sys/posix/sys/types.d
index abcea99019f..529df1bae82 100644
--- a/libphobos/libdruntime/core/sys/posix/sys/types.d
+++ b/libphobos/libdruntime/core/sys/posix/sys/types.d
@@ -1277,6 +1277,18 @@  else version (CRuntime_UClibc)
         enum __SIZEOF_PTHREAD_BARRIER_T     = 20;
         enum __SIZEOF_PTHREAD_BARRIERATTR_T = 4;
      }
+     else version (MIPS64)
+     {
+        enum __SIZEOF_PTHREAD_ATTR_T        = 56;
+        enum __SIZEOF_PTHREAD_MUTEX_T       = 40;
+        enum __SIZEOF_PTHREAD_MUTEXATTR_T   = 4;
+        enum __SIZEOF_PTHREAD_COND_T        = 48;
+        enum __SIZEOF_PTHREAD_CONDATTR_T    = 4;
+        enum __SIZEOF_PTHREAD_RWLOCK_T      = 56;
+        enum __SIZEOF_PTHREAD_RWLOCKATTR_T  = 8;
+        enum __SIZEOF_PTHREAD_BARRIER_T     = 32;
+        enum __SIZEOF_PTHREAD_BARRIERATTR_T = 4;
+     }
      else version (ARM)
      {
         enum __SIZEOF_PTHREAD_ATTR_T = 36;
diff --git a/libphobos/src/std/path.d b/libphobos/src/std/path.d
index 4a435efba6c..d250953ee1c 100644
--- a/libphobos/src/std/path.d
+++ b/libphobos/src/std/path.d
@@ -3850,7 +3850,7 @@  string expandTilde(string inputPath) nothrow
     version (Posix)
     {
         import core.exception : onOutOfMemoryError;
-        import core.stdc.errno : errno, ERANGE;
+        import core.stdc.errno : errno, EBADF, ENOENT, EPERM, ERANGE, ESRCH;
         import core.stdc.stdlib : malloc, free, realloc;
 
         /*  Joins a path from a C string to the remainder of path.
@@ -3950,7 +3950,7 @@  string expandTilde(string inputPath) nothrow
                 scope(exit) free(extra_memory);
 
                 passwd result;
-                while (1)
+                loop: while (1)
                 {
                     extra_memory = cast(char*) realloc(extra_memory, extra_memory_size * char.sizeof);
                     if (extra_memory == null)
@@ -3969,10 +3969,23 @@  string expandTilde(string inputPath) nothrow
                         break;
                     }
 
-                    if (errno != ERANGE &&
+                    switch (errno)
+                    {
+                        case ERANGE:
                         // On BSD and OSX, errno can be left at 0 instead of set to ERANGE
-                        errno != 0)
-                        onOutOfMemoryError();
+                        case 0:
+                            break;
+
+                        case ENOENT:
+                        case ESRCH:
+                        case EBADF:
+                        case EPERM:
+                            // The given name or uid was not found.
+                            break loop;
+
+                        default:
+                            onOutOfMemoryError();
+                    }
 
                     // extra_memory isn't large enough
                     import core.checkedint : mulu;
diff --git a/libphobos/src/std/stdio.d b/libphobos/src/std/stdio.d
index bbf785773d4..1dc91bc2e35 100644
--- a/libphobos/src/std/stdio.d
+++ b/libphobos/src/std/stdio.d
@@ -52,8 +52,7 @@  else version (CRuntime_Musl)
 }
 else version (CRuntime_UClibc)
 {
-    // uClibc supports GCC IO
-    version = GCC_IO;
+    version = GENERIC_IO;
 }
 else version (OSX)
 {