Rollup merge of #82057 - upsuper-forks:cstr, r=davidtwco,wesleywiser

Replace const_cstr with cstr crate

This PR replaces the `const_cstr` macro inside `rustc_data_structures` with `cstr` macro from [cstr](https://crates.io/crates/cstr) crate.

The two macros basically serve the same purpose, which is to generate `&'static CStr` from a string literal. `cstr` is better because it validates the literal at compile time, while the existing `const_cstr` does it at runtime when `debug_assertions` is enabled. In addition, the value `cstr` generates can be used in constant context (which is seemingly not needed anywhere currently, though).

1 files changed, 3 insertions, 3 deletions

diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
index 1464784ae28..85d1b702399 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
@@ -18,8 +18,8 @@ use crate::llvm::debuginfo::{
 };
 use crate::value::Value;
 
+use cstr::cstr;
 use rustc_codegen_ssa::traits::*;
-use rustc_data_structures::const_cstr;
 use rustc_data_structures::fingerprint::Fingerprint;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
@@ -1075,7 +1075,7 @@ pub fn compile_unit_metadata(
                 gcov_cu_info.len() as c_uint,
             );
 
-            let llvm_gcov_ident = const_cstr!("llvm.gcov");
+            let llvm_gcov_ident = cstr!("llvm.gcov");
             llvm::LLVMAddNamedMetadataOperand(
                 debug_context.llmod,
                 llvm_gcov_ident.as_ptr(),
@@ -1093,7 +1093,7 @@ pub fn compile_unit_metadata(
             );
             llvm::LLVMAddNamedMetadataOperand(
                 debug_context.llmod,
-                const_cstr!("llvm.ident").as_ptr(),
+                cstr!("llvm.ident").as_ptr(),
                 llvm::LLVMMDNodeInContext(debug_context.llcontext, &name_metadata, 1),
             );
         }