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zig/lib/std
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Niles Salter 7d511d6428
[heapsort] Protect against integer overflow 
(Firstly, I changed `n` to `b`, as that is less confusing. It's not a length, it's a right boundary.)

The invariant maintained is `cur < b`. In the worst case `2*cur + 1` results in a maximum of `2b`. Since `2b` is not guaranteed to be lower than `maxInt`, we have to add one overflow check to `siftDown` to make sure we avoid undefined behavior.

LLVM also seems to have a nicer time compiling this version of the function. It is about 2x faster in my tests (I think LLVM was stumped by the `child += @intFromBool` line), and adding/removing the overflow check has a negligible performance difference on my machine. Of course, we could check `2b <= maxInt` in the parent function, and dispatch to a version of the function without the overflow check in the common case, but that probably is not worth the code size just to eliminate a single instruction.
2023-06-22 17:32:28 +00:00
..
atomic
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
Build
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
c
std.c: update netbsd/openbsd mman constants
2023-06-22 10:21:48 +00:00
compress
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
crypto
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
dwarf
wasm: Implement debug info for parameters
2022-05-09 18:51:46 +02:00
event
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
fmt
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
fs
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
hash
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
heap
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
http
http: fix getting Transfer-Encoding value
2023-06-22 11:44:46 +03:00
io
rename ZIG_DEBUG_COLOR env variable to YES_COLOR
2023-06-22 10:29:45 +10:00
json
std: json.parseFromValue() (#15981)
2023-06-20 19:01:34 -04:00
math
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
mem
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
meta
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
net
Disallow named test decls with duplicate names
2023-05-08 10:59:06 +03:00
os
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
rand
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
sort
migration: std.math.{min, min3, max, max3} -> @min & @max
2023-06-16 13:44:09 -07:00
target
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
testing
update codebase to use @memset and @memcpy
2023-04-28 13:24:43 -07:00
Thread
std: prevent random CI failures
2023-06-20 10:56:23 -07:00
time
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
tz
Support legacy TZ format, expose header struct to a potential writer
2022-01-01 12:47:08 +00:00
unicode
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
valgrind
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
array_hash_map.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
array_list.zig
InternPool: port most of value tags
2023-06-10 20:47:54 -07:00
ascii.zig
migration: std.math.{min, min3, max, max3} -> @min & @max
2023-06-16 13:44:09 -07:00
atomic.zig
std: remove names from incorrectly named tests
2023-04-21 23:08:48 -04:00
base64.zig
all: replace comptime try with try comptime
2023-06-13 23:46:58 +06:00
bit_set.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
bounded_array.zig
convert s[start..start+len] to s[start..][0..len]
2023-05-07 15:55:21 +10:00
buf_map.zig
doc: fix minor grammar issues
2023-04-22 13:09:15 +03:00
buf_set.zig
update codebase to use @memset and @memcpy
2023-04-28 13:24:43 -07:00
Build.zig
std: replace builtin.Version with SemanticVersion
2023-06-17 13:17:34 -07:00
builtin.zig
std: replace builtin.Version with SemanticVersion
2023-06-17 13:17:34 -07:00
c.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
child_process.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
coff.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
compress.zig
std.compress.zstd: renamed from std.compress.zstandard
2023-02-22 00:11:20 +11:00
comptime_string_map.zig
std.sort: add pdqsort and heapsort
2023-05-23 17:55:59 -07:00
crypto.zig
std.crypto.ff - Alloc-free, constant-time field arithmetic for crypto (#15795)
2023-05-22 16:11:06 +02:00
cstr.zig
all: replace comptime try with try comptime
2023-06-13 23:46:58 +06:00
debug.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
dwarf.zig
std.dwarf: fix findCompileUnit when ranges offset is given by const
2023-06-12 14:22:45 -07:00
dynamic_library.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
elf.zig
Merge pull request #16046 from BratishkaErik/issue-6128
2023-06-19 22:36:24 -07:00
enums.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
event.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fifo.zig
migration: std.math.{min, min3, max, max3} -> @min & @max
2023-06-16 13:44:09 -07:00
fmt.zig
Merge pull request #16046 from BratishkaErik/issue-6128
2023-06-19 22:36:24 -07:00
fs.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
hash_map.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
hash.zig
add std.hash.uint32
2023-06-10 20:42:30 -07:00
heap.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
http.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
Ini.zig
add std.Ini for basic .ini file parsing
2023-01-11 15:39:48 -08:00
io.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
json.zig
std: Support user-provided jsonParse method. Unify json.Parser and json.parse* (#15705)
2023-06-19 11:21:37 -04:00
leb128.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
linked_list.zig
std: fix a bunch of typos
2023-04-30 18:16:04 -07:00
log.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
macho.zig
std: fix a bunch of typos
2023-04-30 18:16:04 -07:00
math.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
mem.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
meta.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
multi_array_list.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
net.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
once.zig
update std lib and compiler sources to new for loop syntax
2023-02-18 19:17:21 -07:00
os.zig
std.os: update logic for 64-bit symbol choice
2023-06-20 12:55:38 -04:00
packed_int_array.zig
std: fix a bunch of typos
2023-04-30 18:16:04 -07:00
pdb.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
priority_dequeue.zig
[priority_dequeue] Fix out-of-bounds access
2023-06-22 02:03:53 -07:00
priority_queue.zig
update std lib and compiler sources to new for loop syntax
2023-02-18 19:17:21 -07:00
process.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
Progress.zig
update codebase to use @memset and @memcpy
2023-04-28 13:24:43 -07:00
rand.zig
migration: std.math.{min, min3, max, max3} -> @min & @max
2023-06-16 13:44:09 -07:00
RingBuffer.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
segmented_list.zig
update codebase to use @memset and @memcpy
2023-04-28 13:24:43 -07:00
SemanticVersion.zig
std: replace builtin.Version with SemanticVersion
2023-06-17 13:17:34 -07:00
simd.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
sort.zig
[heapsort] Protect against integer overflow
2023-06-22 17:32:28 +00:00
start_windows_tls.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
start.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
std.zig
add BoundedArrayAligned (#14580)
2023-03-17 17:50:25 +01:00
tar.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
target.zig
std.Target: c_char is unsigned on RISC-V
2023-06-20 08:27:55 -07:00
testing.zig
mem: rename align*Generic to mem.align*
2023-06-17 12:49:13 -07:00
Thread.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
time.zig
std: fix a bunch of typos
2023-04-30 18:16:04 -07:00
treap.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
tz.zig
update codebase to use @memset and @memcpy
2023-04-28 13:24:43 -07:00
unicode.zig
all: replace comptime try with try comptime
2023-06-13 23:46:58 +06:00
Uri.zig
migration: std.math.{min, min3, max, max3} -> @min & @max
2023-06-16 13:44:09 -07:00
valgrind.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
wasm.zig
all: zig fmt and rename "@XToY" to "@YFromX"
2023-06-19 12:34:42 -07:00
zig.zig
std: replace builtin.Version with SemanticVersion
2023-06-17 13:17:34 -07:00