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compiler-rt: move strlen from libzigc to here

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LLVM 21 has started recognizing strlen-like idioms and optimizing them to strlen
calls, so we need this function provided in compiler-rt for libc-less
compilations.
This commit is contained in:
Alex Rønne Petersen
2025-07-16 18:33:15 +02:00
parent dfa55e193d
commit e9ac2ce116
3 changed files with 12 additions and 5 deletions
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lib/c/string.zig
-5
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@@ -4,7 +4,6 @@ const common = @import("common.zig");
comptime {
@export(&strcmp, .{ .name = "strcmp", .linkage = common.linkage, .visibility = common.visibility });
@export(&strlen, .{ .name = "strlen", .linkage = common.linkage, .visibility = common.visibility });
@export(&strncmp, .{ .name = "strncmp", .linkage = common.linkage, .visibility = common.visibility });
@export(&strcasecmp, .{ .name = "strcasecmp", .linkage = common.linkage, .visibility = common.visibility });
@export(&strncasecmp, .{ .name = "strncasecmp", .linkage = common.linkage, .visibility = common.visibility });
@@ -103,7 +102,3 @@ test strncmp {
try std.testing.expect(strncmp(@ptrCast("b"), @ptrCast("a"), 1) > 0);
try std.testing.expect(strncmp(@ptrCast("\xff"), @ptrCast("\x02"), 1) > 0);
}
fn strlen(s: [*:0]const c_char) callconv(.c) usize {
return std.mem.len(s);
}