From 232bc1bdeecc62185984705118adb81e7cf759c2 Mon Sep 17 00:00:00 2001
From: LemonBoy <thatlemon@gmail.com>
Date: Fri, 10 May 2019 10:15:47 +0200
Subject: [PATCH] Remove more 64bit-centric assumptions from stdlib

---
 std/debug.zig   | 26 +++++++++++++-------------
 std/elf.zig     |  4 ++--
 std/os/file.zig |  3 ++-
 std/pdb.zig     |  2 +-
 4 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/std/debug.zig b/std/debug.zig
index 234eebcd5e..d8dd2c3980 100644
--- a/std/debug.zig
+++ b/std/debug.zig
@@ -1181,8 +1181,8 @@ pub const DwarfInfo = struct {
     func_list: ArrayList(Func),
 
     pub const Section = struct {
-        offset: usize,
-        size: usize,
+        offset: u64,
+        size: u64,
     };
 
     pub fn allocator(self: DwarfInfo) *mem.Allocator {
@@ -1344,8 +1344,8 @@ const FileEntry = struct {
 };
 
 pub const LineInfo = struct {
-    line: usize,
-    column: usize,
+    line: u64,
+    column: u64,
     file_name: []const u8,
     allocator: ?*mem.Allocator,
 
@@ -1358,8 +1358,8 @@ pub const LineInfo = struct {
 const LineNumberProgram = struct {
     address: usize,
     file: usize,
-    line: isize,
-    column: usize,
+    line: i64,
+    column: u64,
     is_stmt: bool,
     basic_block: bool,
     end_sequence: bool,
@@ -1370,8 +1370,8 @@ const LineNumberProgram = struct {
 
     prev_address: usize,
     prev_file: usize,
-    prev_line: isize,
-    prev_column: usize,
+    prev_line: i64,
+    prev_column: u64,
     prev_is_stmt: bool,
     prev_basic_block: bool,
     prev_end_sequence: bool,
@@ -1414,7 +1414,7 @@ const LineNumberProgram = struct {
             const file_name = try os.path.join(self.file_entries.allocator, [][]const u8{ dir_name, file_entry.file_name });
             errdefer self.file_entries.allocator.free(file_name);
             return LineInfo{
-                .line = if (self.prev_line >= 0) @intCast(usize, self.prev_line) else 0,
+                .line = if (self.prev_line >= 0) @intCast(u64, self.prev_line) else 0,
                 .column = self.prev_column,
                 .file_name = file_name,
                 .allocator = self.file_entries.allocator,
@@ -1789,7 +1789,7 @@ fn getLineNumberInfoMacOs(di: *DebugInfo, symbol: MachoSymbol, target_address: u
                     prog.basic_block = false;
                 },
                 DW.LNS_advance_pc => {
-                    const arg = try leb.readULEB128Mem(u64, &ptr);
+                    const arg = try leb.readULEB128Mem(usize, &ptr);
                     prog.address += arg * minimum_instruction_length;
                 },
                 DW.LNS_advance_line => {
@@ -1797,7 +1797,7 @@ fn getLineNumberInfoMacOs(di: *DebugInfo, symbol: MachoSymbol, target_address: u
                     prog.line += arg;
                 },
                 DW.LNS_set_file => {
-                    const arg = try leb.readULEB128Mem(u64, &ptr);
+                    const arg = try leb.readULEB128Mem(usize, &ptr);
                     prog.file = arg;
                 },
                 DW.LNS_set_column => {
@@ -1955,7 +1955,7 @@ fn getLineNumberInfoDwarf(di: *DwarfInfo, compile_unit: CompileUnit, target_addr
                     prog.basic_block = false;
                 },
                 DW.LNS_advance_pc => {
-                    const arg = try leb.readULEB128(u64, di.dwarf_in_stream);
+                    const arg = try leb.readULEB128(usize, di.dwarf_in_stream);
                     prog.address += arg * minimum_instruction_length;
                 },
                 DW.LNS_advance_line => {
@@ -1963,7 +1963,7 @@ fn getLineNumberInfoDwarf(di: *DwarfInfo, compile_unit: CompileUnit, target_addr
                     prog.line += arg;
                 },
                 DW.LNS_set_file => {
-                    const arg = try leb.readULEB128(u64, di.dwarf_in_stream);
+                    const arg = try leb.readULEB128(usize, di.dwarf_in_stream);
                     prog.file = arg;
                 },
                 DW.LNS_set_column => {
diff --git a/std/elf.zig b/std/elf.zig
index 49f2f7d137..39617d3cf4 100644
--- a/std/elf.zig
+++ b/std/elf.zig
@@ -363,7 +363,7 @@ pub const Elf = struct {
     entry_addr: u64,
     program_header_offset: u64,
     section_header_offset: u64,
-    string_section_index: u64,
+    string_section_index: usize,
     string_section: *SectionHeader,
     section_headers: []SectionHeader,
     allocator: *mem.Allocator,
@@ -458,7 +458,7 @@ pub const Elf = struct {
         const ph_entry_count = try in.readInt(u16, elf.endian);
         const sh_entry_size = try in.readInt(u16, elf.endian);
         const sh_entry_count = try in.readInt(u16, elf.endian);
-        elf.string_section_index = u64(try in.readInt(u16, elf.endian));
+        elf.string_section_index = usize(try in.readInt(u16, elf.endian));
 
         if (elf.string_section_index >= sh_entry_count) return error.InvalidFormat;
 
diff --git a/std/os/file.zig b/std/os/file.zig
index 814e5e318c..d223d55a46 100644
--- a/std/os/file.zig
+++ b/std/os/file.zig
@@ -238,7 +238,8 @@ pub const File = struct {
     pub fn seekForward(self: File, amount: i64) SeekError!void {
         switch (builtin.os) {
             Os.linux, Os.macosx, Os.ios, Os.freebsd, Os.netbsd => {
-                const result = posix.lseek(self.handle, amount, posix.SEEK_CUR);
+                const iamount = try math.cast(isize, amount);
+                const result = posix.lseek(self.handle, iamount, posix.SEEK_CUR);
                 const err = posix.getErrno(result);
                 if (err > 0) {
                     return switch (err) {
diff --git a/std/pdb.zig b/std/pdb.zig
index 043be2bcf4..f3b73663e8 100644
--- a/std/pdb.zig
+++ b/std/pdb.zig
@@ -632,7 +632,7 @@ const MsfStream = struct {
     }
 
     fn read(self: *MsfStream, buffer: []u8) !usize {
-        var block_id = self.pos / self.block_size;
+        var block_id = @intCast(usize, self.pos / self.block_size);
         var block = self.blocks[block_id];
         var offset = self.pos % self.block_size;