zig

commit e1375942e584d4fffd3ecd06277ced7cf35d7e6c (tree)
parent 331cc810ded2058f2e2767b0485eb18d888a45e5
Author: Andrew Kelley <andrew@ziglang.org>
Date:   Mon, 28 Feb 2022 12:36:45 -0700

zig cc: special handling of /dev/null

Now we handle -o /dev/null equivalent to -fno-emit-bin because
otherwise our atomic rename into place will fail. This also
makes Zig do less work, avoiding pointless file system operations.

Diffstat:
M
src/main.zig
 | 
11
++++++++++-

1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/src/main.zig b/src/main.zig
@@ -1317,7 +1317,16 @@ fn buildOutputType(
                 };
                 switch (it.zig_equivalent) {
                     .target => target_arch_os_abi = it.only_arg, // example: -target riscv64-linux-unknown
-                    .o => out_path = it.only_arg, // -o
+                    .o => {
+                        // We handle -o /dev/null equivalent to -fno-emit-bin because
+                        // otherwise our atomic rename into place will fail. This also
+                        // makes Zig do less work, avoiding pointless file system operations.
+                        if (mem.eql(u8, it.only_arg, "/dev/null")) {
+                            emit_bin = .no;
+                        } else {
+                            out_path = it.only_arg;
+                        }
+                    },
                     .c => c_out_mode = .object, // -c
                     .asm_only => c_out_mode = .assembly, // -S
                     .preprocess_only => c_out_mode = .preprocessor, // -E