3 files changed, 0 insertions, 4 deletions
diff --git a/lib/std/Thread.zig b/lib/std/Thread.zig
index 20985c36a0..a611ff38de 100644
--- a/lib/std/Thread.zig
+++ b/lib/std/Thread.zig
@@ -404,7 +404,6 @@ fn callFn(comptime f: anytype, args: anytype) switch (Impl) {
             }
 
             // pthreads don't support exit status, ignore value
-            _ = status;
             return default_value;
         },
         .ErrorUnion => |info| {
diff --git a/lib/std/heap/general_purpose_allocator.zig b/lib/std/heap/general_purpose_allocator.zig
index abffad751c..490d352da2 100644
--- a/lib/std/heap/general_purpose_allocator.zig
+++ b/lib/std/heap/general_purpose_allocator.zig
@@ -582,8 +582,6 @@ pub fn GeneralPurposeAllocator(comptime config: Config) type {
             old_align: u29,
             ret_addr: usize,
         ) void {
-            _ = old_align;
-
             const entry = self.large_allocations.getEntry(@ptrToInt(old_mem.ptr)) orelse {
                 if (config.safety) {
                     @panic("Invalid free");
diff --git a/lib/std/math.zig b/lib/std/math.zig
index d1c9326ae2..f519979349 100644
--- a/lib/std/math.zig
+++ b/lib/std/math.zig
@@ -171,7 +171,6 @@ pub fn approxEqRel(comptime T: type, x: T, y: T, tolerance: T) bool {
 }
 
 pub fn approxEq(comptime T: type, x: T, y: T, tolerance: T) bool {
-    _ = T;
     _ = x;
     _ = y;
     _ = tolerance;