std: Use truncating cast in WIFSTOPPED for Linux, FreeBSD and DragonFly

The intermediate value can be larger than an u16, so @truncate is needed to match the behavior of musl.
ziglang · Sep 3, 2021 · b3a4074 · b3a4074
1 parent 46f9380
commit b3a4074
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Showing 3 changed files with 3 additions and 3 deletions.
diff --git a/lib/std/os/bits/dragonfly.zig b/lib/std/os/bits/dragonfly.zig
@@ -345,7 +345,7 @@ pub fn WIFEXITED(s: u32) bool {
     return WTERMSIG(s) == 0;
 }
 pub fn WIFSTOPPED(s: u32) bool {
-    return @intCast(u16, (((s & 0xffff) *% 0x10001) >> 8)) > 0x7f00;
+    return @truncate(u16, (((s & 0xffff) *% 0x10001) >> 8)) > 0x7f00;
 }
 pub fn WIFSIGNALED(s: u32) bool {
     return (s & 0xffff) -% 1 < 0xff;

diff --git a/lib/std/os/bits/freebsd.zig b/lib/std/os/bits/freebsd.zig
@@ -742,7 +742,7 @@ pub fn WIFEXITED(s: u32) bool {
     return WTERMSIG(s) == 0;
 }
 pub fn WIFSTOPPED(s: u32) bool {
-    return @intCast(u16, (((s & 0xffff) *% 0x10001) >> 8)) > 0x7f00;
+    return @truncate(u16, (((s & 0xffff) *% 0x10001) >> 8)) > 0x7f00;
 }
 pub fn WIFSIGNALED(s: u32) bool {
     return (s & 0xffff) -% 1 < 0xff;

diff --git a/lib/std/os/bits/linux.zig b/lib/std/os/bits/linux.zig
@@ -1061,7 +1061,7 @@ pub fn WIFEXITED(s: u32) bool {
     return WTERMSIG(s) == 0;
 }
 pub fn WIFSTOPPED(s: u32) bool {
-    return @intCast(u16, ((s & 0xffff) *% 0x10001) >> 8) > 0x7f00;
+    return @truncate(u16, ((s & 0xffff) *% 0x10001) >> 8) > 0x7f00;
 }
 pub fn WIFSIGNALED(s: u32) bool {
     return (s & 0xffff) -% 1 < 0xff;