introduce csize_t instead of fixing csize (#12497)

12 files changed, 56 insertions, 48 deletions

diff --git a/lib/posix/posix.nim b/lib/posix/posix.nim
index 044e0448f..27d6d08e9 100644
--- a/lib/posix/posix.nim
+++ b/lib/posix/posix.nim
@@ -870,9 +870,15 @@ proc CMSG_FIRSTHDR*(mhdr: ptr Tmsghdr): ptr Tcmsghdr {.
   importc, header: "<sys/socket.h>".}
 
 proc CMSG_SPACE*(len: csize): csize {.
+  importc, header: "<sys/socket.h>", deprecated: "argument `len` should be of type `csize_t`".}
+
+proc CMSG_SPACE*(len: csize_t): csize_t {.
   importc, header: "<sys/socket.h>".}
 
 proc CMSG_LEN*(len: csize): csize {.
+  importc, header: "<sys/socket.h>", deprecated: "argument `len` should be of type `csize_t`".}
+
+proc CMSG_LEN*(len: csize_t): csize_t {.
   importc, header: "<sys/socket.h>".}
 
 const
diff --git a/lib/posix/posix_linux_amd64.nim b/lib/posix/posix_linux_amd64.nim
index be7934f2f..bb82d9e5e 100644
--- a/lib/posix/posix_linux_amd64.nim
+++ b/lib/posix/posix_linux_amd64.nim
@@ -66,9 +66,9 @@ type
 
   Glob* {.importc: "glob_t", header: "<glob.h>",
            final, pure.} = object ## glob_t
-    gl_pathc*: csize          ## Count of paths matched by pattern.
-    gl_pathv*: cstringArray ## Pointer to a list of matched pathnames.
-    gl_offs*: csize           ## Slots to reserve at the beginning of gl_pathv.
+    gl_pathc*: csize_t            ## Count of paths matched by pattern.
+    gl_pathv*: cstringArray       ## Pointer to a list of matched pathnames.
+    gl_offs*: csize_t             ## Slots to reserve at the beginning of gl_pathv.
     gl_flags*: cint
     gl_closedir*: pointer
     gl_readdir*: pointer
@@ -382,7 +382,7 @@ type
     aio_lio_opcode*: cint     ## Operation to be performed.
     aio_reqprio*: cint        ## Request priority offset.
     aio_buf*: pointer         ## Location of buffer.
-    aio_nbytes*: csize        ## Length of transfer.
+    aio_nbytes*: csize_t        ## Length of transfer.
     aio_sigevent*: SigEvent   ## Signal number and value.
     next_prio: pointer
     abs_prio: cint
@@ -445,22 +445,22 @@ type
   IOVec* {.importc: "struct iovec", pure, final,
             header: "<sys/uio.h>".} = object ## struct iovec
     iov_base*: pointer ## Base address of a memory region for input or output.
-    iov_len*: csize    ## The size of the memory pointed to by iov_base.
+    iov_len*: csize_t    ## The size of the memory pointed to by iov_base.
 
   Tmsghdr* {.importc: "struct msghdr", pure, final,
              header: "<sys/socket.h>".} = object  ## struct msghdr
     msg_name*: pointer  ## Optional address.
     msg_namelen*: SockLen  ## Size of address.
     msg_iov*: ptr IOVec    ## Scatter/gather array.
-    msg_iovlen*: csize   ## Members in msg_iov.
+    msg_iovlen*: csize_t   ## Members in msg_iov.
     msg_control*: pointer  ## Ancillary data; see below.
-    msg_controllen*: csize ## Ancillary data buffer len.
+    msg_controllen*: csize_t ## Ancillary data buffer len.
     msg_flags*: cint ## Flags on received message.
 
 
   Tcmsghdr* {.importc: "struct cmsghdr", pure, final,
               header: "<sys/socket.h>".} = object ## struct cmsghdr
-    cmsg_len*: csize ## Data byte count, including the cmsghdr.
+    cmsg_len*: csize_t ## Data byte count, including the cmsghdr.
     cmsg_level*: cint   ## Originating protocol.
     cmsg_type*: cint    ## Protocol-specific type.
 
diff --git a/lib/pure/strutils.nim b/lib/pure/strutils.nim
index e5445fe7e..b7d9c7874 100644
--- a/lib/pure/strutils.nim
+++ b/lib/pure/strutils.nim
@@ -1846,7 +1846,7 @@ proc find*(a: SkipTable, s, sub: string, start: Natural = 0, last = 0): int
   return -1
 
 when not (defined(js) or defined(nimdoc) or defined(nimscript)):
-  proc c_memchr(cstr: pointer, c: char, n: csize): pointer {.
+  proc c_memchr(cstr: pointer, c: char, n: csize_t): pointer {.
                 importc: "memchr", header: "<string.h>".}
   const hasCStringBuiltin = true
 else:
@@ -1872,7 +1872,7 @@ proc find*(s: string, sub: char, start: Natural = 0, last = 0): int {.noSideEffe
     when hasCStringBuiltin:
       let L = last-start+1
       if L > 0:
-        let found = c_memchr(s[start].unsafeAddr, sub, L)
+        let found = c_memchr(s[start].unsafeAddr, sub, cast[csize_t](L))
         if not found.isNil:
           return cast[ByteAddress](found) -% cast[ByteAddress](s.cstring)
     else:
diff --git a/lib/system.nim b/lib/system.nim
index 1485e4f6a..d8c70179a 100644
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -2271,7 +2271,9 @@ type # these work for most platforms:
     ## This is the same as the type ``short`` in *C*.
   cint* {.importc: "int", nodecl.} = int32
     ## This is the same as the type ``int`` in *C*.
-  csize* {.importc: "size_t", nodecl.} = int
+  csize* {.importc: "size_t", nodecl, deprecated: "use `csize_t` instead".} = int
+    ## This isn't the same as ``size_t`` in *C*. Don't use it.
+  csize_t* {.importc: "size_t", nodecl.} = uint
     ## This is the same as the type ``size_t`` in *C*.
   clonglong* {.importc: "long long", nodecl.} = int64
     ## This is the same as the type ``long long`` in *C*.
@@ -3638,7 +3640,7 @@ when not defined(JS): #and not defined(nimscript):
       when declared(memTrackerOp):
         memTrackerOp("copyMem", dest, size)
     proc moveMem(dest, source: pointer, size: Natural) =
-      c_memmove(dest, source, size)
+      c_memmove(dest, source, csize_t(size))
       when declared(memTrackerOp):
         memTrackerOp("moveMem", dest, size)
     proc equalMem(a, b: pointer, size: Natural): bool =
@@ -3656,7 +3658,7 @@ when not defined(JS): #and not defined(nimscript):
         else: result = 0
       else:
         let minlen = min(x.len, y.len)
-        result = int(nimCmpMem(x.cstring, y.cstring, minlen.csize))
+        result = int(nimCmpMem(x.cstring, y.cstring, cast[csize_t](minlen)))
         if result == 0:
           result = x.len - y.len
 
diff --git a/lib/system/ansi_c.nim b/lib/system/ansi_c.nim
index 16e7a14d6..79311a2f6 100644
--- a/lib/system/ansi_c.nim
+++ b/lib/system/ansi_c.nim
@@ -15,19 +15,19 @@
 when not defined(nimHasHotCodeReloading):
   {.pragma: nonReloadable.}
 
-proc c_memchr*(s: pointer, c: cint, n: csize): pointer {.
+proc c_memchr*(s: pointer, c: cint, n: csize_t): pointer {.
   importc: "memchr", header: "<string.h>".}
-proc c_memcmp*(a, b: pointer, size: csize): cint {.
+proc c_memcmp*(a, b: pointer, size: csize_t): cint {.
   importc: "memcmp", header: "<string.h>", noSideEffect.}
-proc c_memcpy*(a, b: pointer, size: csize): pointer {.
+proc c_memcpy*(a, b: pointer, size: csize_t): pointer {.
   importc: "memcpy", header: "<string.h>", discardable.}
-proc c_memmove*(a, b: pointer, size: csize): pointer {.
+proc c_memmove*(a, b: pointer, size: csize_t): pointer {.
   importc: "memmove", header: "<string.h>",discardable.}
-proc c_memset*(p: pointer, value: cint, size: csize): pointer {.
+proc c_memset*(p: pointer, value: cint, size: csize_t): pointer {.
   importc: "memset", header: "<string.h>", discardable.}
 proc c_strcmp*(a, b: cstring): cint {.
   importc: "strcmp", header: "<string.h>", noSideEffect.}
-proc c_strlen*(a: cstring): csize {.
+proc c_strlen*(a: cstring): csize_t {.
   importc: "strlen", header: "<string.h>", noSideEffect.}
 proc c_abort*() {.
   importc: "abort", header: "<stdlib.h>", noSideEffect, noreturn.}
@@ -132,18 +132,18 @@ proc c_sprintf*(buf, frmt: cstring): cint {.
   importc: "sprintf", header: "<stdio.h>", varargs, noSideEffect.}
   # we use it only in a way that cannot lead to security issues
 
-proc c_malloc*(size: csize): pointer {.
+proc c_malloc*(size: csize_t): pointer {.
   importc: "malloc", header: "<stdlib.h>".}
 proc c_free*(p: pointer) {.
   importc: "free", header: "<stdlib.h>".}
-proc c_realloc*(p: pointer, newsize: csize): pointer {.
+proc c_realloc*(p: pointer, newsize: csize_t): pointer {.
   importc: "realloc", header: "<stdlib.h>".}
 
-proc c_fwrite*(buf: pointer, size, n: csize, f: CFilePtr): cint {.
+proc c_fwrite*(buf: pointer, size, n: csize_t, f: CFilePtr): cint {.
   importc: "fwrite", header: "<stdio.h>".}
 
 proc rawWrite*(f: CFilePtr, s: cstring) {.compilerproc, nonReloadable, inline.} =
   # we cannot throw an exception here!
-  discard c_fwrite(s, 1, s.len, f)
+  discard c_fwrite(s, 1, cast[csize_t](s.len), f)
 
 {.pop.}
diff --git a/lib/system/io.nim b/lib/system/io.nim
index 76bf41b11..fcdfa79c0 100644
--- a/lib/system/io.nim
+++ b/lib/system/io.nim
@@ -83,11 +83,11 @@ proc c_feof(f: File): cint {.
   importc: "feof", header: "<stdio.h>".}
 
 when not declared(c_fwrite):
-  proc c_fwrite(buf: pointer, size, n: csize, f: File): cint {.
+  proc c_fwrite(buf: pointer, size, n: csize_t, f: File): cint {.
     importc: "fwrite", header: "<stdio.h>".}
 
 # C routine that is used here:
-proc c_fread(buf: pointer, size, n: csize, f: File): csize {.
+proc c_fread(buf: pointer, size, n: csize_t, f: File): csize_t {.
   importc: "fread", header: "<stdio.h>", tags: [ReadIOEffect].}
 when defined(windows):
   when not defined(amd64):
@@ -107,7 +107,7 @@ else:
     importc: "ftello", header: "<stdio.h>", tags: [].}
 proc c_ferror(f: File): cint {.
   importc: "ferror", header: "<stdio.h>", tags: [].}
-proc c_setvbuf(f: File, buf: pointer, mode: cint, size: csize): cint {.
+proc c_setvbuf(f: File, buf: pointer, mode: cint, size: csize_t): cint {.
   importc: "setvbuf", header: "<stdio.h>", tags: [].}
 
 proc c_fprintf(f: File, frmt: cstring): cint {.
@@ -153,7 +153,7 @@ proc readBuffer*(f: File, buffer: pointer, len: Natural): int {.
   ## reads `len` bytes into the buffer pointed to by `buffer`. Returns
   ## the actual number of bytes that have been read which may be less than
   ## `len` (if not as many bytes are remaining), but not greater.
-  result = c_fread(buffer, 1, len, f)
+  result = cast[int](c_fread(buffer, 1, cast[csize_t](len), f))
   if result != len: checkErr(f)
 
 proc readBytes*(f: File, a: var openArray[int8|uint8], start, len: Natural): int {.
@@ -185,7 +185,7 @@ proc writeBuffer*(f: File, buffer: pointer, len: Natural): int {.
   ## writes the bytes of buffer pointed to by the parameter `buffer` to the
   ## file `f`. Returns the number of actual written bytes, which may be less
   ## than `len` in case of an error.
-  result = c_fwrite(buffer, 1, len, f)
+  result = cast[int](c_fwrite(buffer, 1, cast[csize_t](len), f))
   checkErr(f)
 
 proc writeBytes*(f: File, a: openArray[int8|uint8], start, len: Natural): int {.
@@ -296,7 +296,7 @@ proc readLine*(f: File, line: var TaintedString): bool {.tags: [ReadIOEffect],
   ## character(s) are not part of the returned string. Returns ``false``
   ## if the end of the file has been reached, ``true`` otherwise. If
   ## ``false`` is returned `line` contains no new data.
-  proc c_memchr(s: pointer, c: cint, n: csize): pointer {.
+  proc c_memchr(s: pointer, c: cint, n: csize_t): pointer {.
     importc: "memchr", header: "<string.h>".}
 
   var pos = 0
@@ -312,7 +312,7 @@ proc readLine*(f: File, line: var TaintedString): bool {.tags: [ReadIOEffect],
 
     var fgetsSuccess = c_fgets(addr line.string[pos], sp.cint, f) != nil
     if not fgetsSuccess: checkErr(f)
-    let m = c_memchr(addr line.string[pos], '\L'.ord, sp)
+    let m = c_memchr(addr line.string[pos], '\L'.ord, cast[csize_t](sp))
     if m != nil:
       # \l found: Could be our own or the one by fgets, in any case, we're done
       var last = cast[ByteAddress](m) - cast[ByteAddress](addr line.string[0])
@@ -536,7 +536,7 @@ proc open*(f: var File, filename: string,
     result = true
     f = cast[File](p)
     if bufSize > 0 and bufSize <= high(cint).int:
-      discard c_setvbuf(f, nil, IOFBF, bufSize.cint)
+      discard c_setvbuf(f, nil, IOFBF, cast[csize_t](bufSize))
     elif bufSize == 0:
       discard c_setvbuf(f, nil, IONBF, 0)
 
@@ -622,7 +622,7 @@ when declared(stdout):
         when defined(windows):
           writeWindows(stdout, s)
         else:
-          discard c_fwrite(s.cstring, s.len, 1, stdout)
+          discard c_fwrite(s.cstring, cast[csize_t](s.len), 1, stdout)
       const linefeed = "\n"
       discard c_fwrite(linefeed.cstring, linefeed.len, 1, stdout)
       discard c_fflush(stdout)
diff --git a/lib/system/memory.nim b/lib/system/memory.nim
index 13bddf211..8d190e5f9 100644
--- a/lib/system/memory.nim
+++ b/lib/system/memory.nim
@@ -10,7 +10,7 @@ when useLibC:
 
 proc nimCopyMem*(dest, source: pointer, size: Natural) {.nonReloadable, compilerproc, inline.} =
   when useLibC:
-    c_memcpy(dest, source, size)
+    c_memcpy(dest, source, cast[csize_t](size))
   else:
     let d = cast[ptr UncheckedArray[byte]](dest)
     let s = cast[ptr UncheckedArray[byte]](source)
@@ -21,7 +21,7 @@ proc nimCopyMem*(dest, source: pointer, size: Natural) {.nonReloadable, compiler
 
 proc nimSetMem*(a: pointer, v: cint, size: Natural) {.nonReloadable, inline.} =
   when useLibC:
-    c_memset(a, v, size)
+    c_memset(a, v, cast[csize_t](size))
   else:
     let a = cast[ptr UncheckedArray[byte]](a)
     var i = 0
@@ -35,7 +35,7 @@ proc nimZeroMem*(p: pointer, size: Natural) {.compilerproc, nonReloadable, inlin
 
 proc nimCmpMem*(a, b: pointer, size: Natural): cint {.compilerproc, nonReloadable, inline.} =
   when useLibC:
-    c_memcmp(a, b, size)
+    c_memcmp(a, b, cast[csize_t](size))
   else:
     let a = cast[ptr UncheckedArray[byte]](a)
     let b = cast[ptr UncheckedArray[byte]](b)
@@ -45,7 +45,7 @@ proc nimCmpMem*(a, b: pointer, size: Natural): cint {.compilerproc, nonReloadabl
       if d != 0: return d
       inc i
 
-proc nimCStrLen*(a: cstring): csize {.compilerproc, nonReloadable, inline.} =
+proc nimCStrLen*(a: cstring): csize_t {.compilerproc, nonReloadable, inline.} =
   when useLibC:
     c_strlen(a)
   else:
diff --git a/lib/system/osalloc.nim b/lib/system/osalloc.nim
index 06e89f130..b7e3e7183 100644
--- a/lib/system/osalloc.nim
+++ b/lib/system/osalloc.nim
@@ -215,24 +215,24 @@ elif defined(posix):
       MAP_ANONYMOUS {.importc: "MAP_ANONYMOUS", header: "<sys/mman.h>".}: cint
       MAP_PRIVATE {.importc: "MAP_PRIVATE", header: "<sys/mman.h>".}: cint
 
-  proc mmap(adr: pointer, len: csize, prot, flags, fildes: cint,
+  proc mmap(adr: pointer, len: csize_t, prot, flags, fildes: cint,
             off: int): pointer {.header: "<sys/mman.h>".}
 
-  proc munmap(adr: pointer, len: csize): cint {.header: "<sys/mman.h>".}
+  proc munmap(adr: pointer, len: csize_t): cint {.header: "<sys/mman.h>".}
 
   proc osAllocPages(size: int): pointer {.inline.} =
-    result = mmap(nil, size, PROT_READ or PROT_WRITE,
+    result = mmap(nil, cast[csize_t](size), PROT_READ or PROT_WRITE,
                              MAP_PRIVATE or MAP_ANONYMOUS, -1, 0)
     if result == nil or result == cast[pointer](-1):
       raiseOutOfMem()
 
   proc osTryAllocPages(size: int): pointer {.inline.} =
-    result = mmap(nil, size, PROT_READ or PROT_WRITE,
+    result = mmap(nil, cast[csize_t](size), PROT_READ or PROT_WRITE,
                              MAP_PRIVATE or MAP_ANONYMOUS, -1, 0)
     if result == cast[pointer](-1): result = nil
 
   proc osDeallocPages(p: pointer, size: int) {.inline.} =
-    when reallyOsDealloc: discard munmap(p, size)
+    when reallyOsDealloc: discard munmap(p, cast[csize_t](size))
 
 elif defined(windows):
   const
diff --git a/lib/system/strmantle.nim b/lib/system/strmantle.nim
index 69e0d8052..dc3a6de58 100644
--- a/lib/system/strmantle.nim
+++ b/lib/system/strmantle.nim
@@ -14,7 +14,7 @@ proc cmpStrings(a, b: string): int {.inline, compilerproc.} =
   let blen = b.len
   let minlen = min(alen, blen)
   if minlen > 0:
-    result = c_memcmp(unsafeAddr a[0], unsafeAddr b[0], minlen.csize)
+    result = c_memcmp(unsafeAddr a[0], unsafeAddr b[0], cast[csize_t](minlen))
     if result == 0:
       result = alen - blen
   else:
diff --git a/lib/system/threadlocalstorage.nim b/lib/system/threadlocalstorage.nim
index d2a4d00d4..9903fce3f 100644
--- a/lib/system/threadlocalstorage.nim
+++ b/lib/system/threadlocalstorage.nim
@@ -185,7 +185,7 @@ else:
   proc cpusetIncl(cpu: cint; s: var CpuSet) {.
     importc: "CPU_SET", header: schedh.}
 
-  proc setAffinity(thread: SysThread; setsize: csize; s: var CpuSet) {.
+  proc setAffinity(thread: SysThread; setsize: csize_t; s: var CpuSet) {.
     importc: "pthread_setaffinity_np", header: pthreadh.}
 
 
diff --git a/lib/windows/winlean.nim b/lib/windows/winlean.nim
index 1eba3ac36..b5eabb6aa 100644
--- a/lib/windows/winlean.nim
+++ b/lib/windows/winlean.nim
@@ -517,7 +517,7 @@ type
     ai_family*: cint        ## Address family of socket.
     ai_socktype*: cint      ## Socket type.
     ai_protocol*: cint      ## Protocol of socket.
-    ai_addrlen*: csize        ## Length of socket address.
+    ai_addrlen*: csize_t        ## Length of socket address.
     ai_canonname*: cstring  ## Canonical name of service location.
     ai_addr*: ptr SockAddr ## Socket address of socket.
     ai_next*: ptr AddrInfo ## Pointer to next in list.
diff --git a/lib/wrappers/openssl.nim b/lib/wrappers/openssl.nim
index cfe18b5c8..7d605fbea 100644
--- a/lib/wrappers/openssl.nim
+++ b/lib/wrappers/openssl.nim
@@ -685,9 +685,9 @@ type
 
 {.push callconv:cdecl, dynlib:DLLUtilName.}
 proc md5_Init*(c: var MD5_CTX): cint{.importc: "MD5_Init".}
-proc md5_Update*(c: var MD5_CTX; data: pointer; len: csize): cint{.importc: "MD5_Update".}
+proc md5_Update*(c: var MD5_CTX; data: pointer; len: csize_t): cint{.importc: "MD5_Update".}
 proc md5_Final*(md: cstring; c: var MD5_CTX): cint{.importc: "MD5_Final".}
-proc md5*(d: ptr cuchar; n: csize; md: ptr cuchar): ptr cuchar{.importc: "MD5".}
+proc md5*(d: ptr cuchar; n: csize_t; md: ptr cuchar): ptr cuchar{.importc: "MD5".}
 proc md5_Transform*(c: var MD5_CTX; b: ptr cuchar){.importc: "MD5_Transform".}
 {.pop.}
 
@@ -712,7 +712,7 @@ proc md5_File*(file: string): string {.raises: [IOError,Exception].} =
 
   discard md5_Init(ctx)
   while(let bytes = f.readChars(buf, 0, sz); bytes > 0):
-    discard md5_Update(ctx, buf[0].addr, bytes)
+    discard md5_Update(ctx, buf[0].addr, cast[csize_t](bytes))
 
   discard md5_Final(buf[0].addr, ctx)
   f.close
@@ -731,7 +731,7 @@ proc md5_Str*(str: string): string =
   var i = 0
   while i < str.len:
     let L = min(str.len - i, 512)
-    discard md5_Update(ctx, input[i].addr, L)
+    discard md5_Update(ctx, input[i].addr, cast[csize_t](L))
     i += L
 
   discard md5_Final(addr res, ctx)