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add some null-termination annotations

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closes #3797
This commit is contained in:
Andrew Kelley 2019-12-02 01:13:46 -05:00
parent 6d8550a7df
commit b6127b0fe9
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GPG Key ID: 7C5F548F728501A9
1 changed files with 5 additions and 5 deletions
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10
lib/std/special/c.zig
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@ -39,20 +39,20 @@ comptime {
extern var _fltused: c_int = 1;
extern fn main(argc: c_int, argv: [*][*]u8) c_int;
extern fn main(argc: c_int, argv: [*:null]?[*:0]u8) c_int;
extern fn wasm_start() void {
_ = main(0, undefined);
}
extern fn strcmp(s1: [*]const u8, s2: [*]const u8) c_int {
extern fn strcmp(s1: [*:0]const u8, s2: [*:0]const u8) c_int {
return std.cstr.cmp(s1, s2);
}
extern fn strlen(s: [*]const u8) usize {
extern fn strlen(s: [*:0]const u8) usize {
return std.mem.len(u8, s);
}
extern fn strncmp(_l: [*]const u8, _r: [*]const u8, _n: usize) c_int {
extern fn strncmp(_l: [*:0]const u8, _r: [*:0]const u8, _n: usize) c_int {
if (_n == 0) return 0;
var l = _l;
var r = _r;
@ -65,7 +65,7 @@ extern fn strncmp(_l: [*]const u8, _r: [*]const u8, _n: usize) c_int {
return @as(c_int, l[0]) - @as(c_int, r[0]);
}
extern fn strerror(errnum: c_int) [*]const u8 {
extern fn strerror(errnum: c_int) [*:0]const u8 {
return "TODO strerror implementation";
}