From 6b2f4fd20d3c85e5db592f76dea8e56da54e9211 Mon Sep 17 00:00:00 2001
From: Vexu <git@vexu.eu>
Date: Fri, 4 Sep 2020 21:41:34 +0300
Subject: [PATCH] langref: atomic ops are allowed on pointers

Closes #6217
---
 doc/langref.html.in     | 10 +++++-----
 src/ir.cpp              |  4 ++--
 test/compile_errors.zig |  2 +-
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/doc/langref.html.in b/doc/langref.html.in
index b9b8f71c7a..468a77e478 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -6889,7 +6889,7 @@ fn func(y: *i32) void {
       This builtin function atomically dereferences a pointer and returns the value.
       </p>
       <p>
-      {#syntax#}T{#endsyntax#} must be a {#syntax#}bool{#endsyntax#}, a float,
+      {#syntax#}T{#endsyntax#} must be a pointer, a {#syntax#}bool{#endsyntax#}, a float,
       an integer or an enum.
       </p>
       {#header_close#}
@@ -6899,7 +6899,7 @@ fn func(y: *i32) void {
       This builtin function atomically modifies memory and then returns the previous value.
       </p>
       <p>
-      {#syntax#}T{#endsyntax#} must be a {#syntax#}bool{#endsyntax#}, a float,
+      {#syntax#}T{#endsyntax#} must be a pointer, a {#syntax#}bool{#endsyntax#}, a float,
       an integer or an enum.
       </p>
       <p>
@@ -6925,7 +6925,7 @@ fn func(y: *i32) void {
       This builtin function atomically stores a value.
       </p>
       <p>
-      {#syntax#}T{#endsyntax#} must be a {#syntax#}bool{#endsyntax#}, a float,
+      {#syntax#}T{#endsyntax#} must be a pointer, a {#syntax#}bool{#endsyntax#}, a float,
       an integer or an enum.
       </p>
       {#header_close#}
@@ -7208,7 +7208,7 @@ fn cmpxchgStrongButNotAtomic(comptime T: type, ptr: *T, expected_value: T, new_v
       more efficiently in machine instructions.
       </p>
       <p>
-      {#syntax#}T{#endsyntax#} must be a {#syntax#}bool{#endsyntax#}, a float,
+      {#syntax#}T{#endsyntax#} must be a pointer, a {#syntax#}bool{#endsyntax#}, a float,
       an integer or an enum.
       </p>
       <p>{#syntax#}@TypeOf(ptr).alignment{#endsyntax#} must be {#syntax#}>= @sizeOf(T).{#endsyntax#}</p>
@@ -7237,7 +7237,7 @@ fn cmpxchgWeakButNotAtomic(comptime T: type, ptr: *T, expected_value: T, new_val
       However if you need a stronger guarantee, use {#link|@cmpxchgStrong#}.
       </p>
       <p>
-      {#syntax#}T{#endsyntax#} must be a {#syntax#}bool{#endsyntax#}, a float,
+      {#syntax#}T{#endsyntax#} must be a pointer, a {#syntax#}bool{#endsyntax#}, a float,
       an integer or an enum.
       </p>
       <p>{#syntax#}@TypeOf(ptr).alignment{#endsyntax#} must be {#syntax#}>= @sizeOf(T).{#endsyntax#}</p>
diff --git a/src/ir.cpp b/src/ir.cpp
index 9d5814ab6f..efc9cb6707 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -26752,7 +26752,7 @@ static IrInstGen *ir_analyze_instruction_cmpxchg(IrAnalyze *ira, IrInstSrcCmpxch
 
     if (operand_type->id == ZigTypeIdFloat) {
         ir_add_error(ira, &instruction->type_value->child->base,
-            buf_sprintf("expected integer, enum or pointer type, found '%s'", buf_ptr(&operand_type->name)));
+            buf_sprintf("expected bool, integer, enum or pointer type, found '%s'", buf_ptr(&operand_type->name)));
         return ira->codegen->invalid_inst_gen;
     }
 
@@ -30407,7 +30407,7 @@ static ZigType *ir_resolve_atomic_operand_type(IrAnalyze *ira, IrInstGen *op) {
             return ira->codegen->builtin_types.entry_invalid;
         if (operand_ptr_type == nullptr) {
             ir_add_error(ira, &op->base,
-                buf_sprintf("expected integer, float, enum or pointer type, found '%s'",
+                buf_sprintf("expected bool, integer, float, enum or pointer type, found '%s'",
                     buf_ptr(&operand_type->name)));
             return ira->codegen->builtin_types.entry_invalid;
         }
diff --git a/test/compile_errors.zig b/test/compile_errors.zig
index f6e00e1dbb..e4a00e6421 100644
--- a/test/compile_errors.zig
+++ b/test/compile_errors.zig
@@ -899,7 +899,7 @@ pub fn addCases(cases: *tests.CompileErrorContext) void {
         \\    _ = @cmpxchgWeak(f32, &x, 1, 2, .SeqCst, .SeqCst);
         \\}
     , &[_][]const u8{
-        "tmp.zig:3:22: error: expected integer, enum or pointer type, found 'f32'",
+        "tmp.zig:3:22: error: expected bool, integer, enum or pointer type, found 'f32'",
     });
 
     cases.add("atomicrmw with float op not .Xchg, .Add or .Sub",