Initialize uninit boolean

P-E-P · dkm · commit 3f6de6eb7375 · 2025-12-01T20:39:13.000+01:00
gcc/rust/ChangeLog:

	* backend/rust-constexpr.cc (eval_binary_expression): Set initial value
	equality value to false.

Signed-off-by: Pierre-Emmanuel Patry &lt;pierre-emmanuel.patry@embecosm.com&gt;
diff --git a/gcc/rust/backend/rust-constexpr.cc b/gcc/rust/backend/rust-constexpr.cc
@@ -3137,7 +3137,7 @@ eval_binary_expression (const constexpr_ctx *ctx, tree t, bool lval,
 	{
 	  tree lmem = PTRMEM_CST_MEMBER (lhs);
 	  tree rmem = PTRMEM_CST_MEMBER (rhs);
-	  bool eq;
+	  bool eq = false;
 	  if (TREE_CODE (lmem) == TREE_CODE (rmem)
 	      && TREE_CODE (lmem) == FIELD_DECL
 	      && TREE_CODE (DECL_CONTEXT (lmem)) == UNION_TYPE

Original file line number	Diff line number	Diff line change
`@@ -3137,7 +3137,7 @@ eval_binary_expression (const constexpr_ctx *ctx, tree t, bool lval,`
`3137`	`3137`	`{`
`3138`	`3138`	`tree lmem = PTRMEM_CST_MEMBER (lhs);`
`3139`	`3139`	`tree rmem = PTRMEM_CST_MEMBER (rhs);`
`3140`		`- bool eq;`
	`3140`	`+ bool eq = false;`
`3141`	`3141`	`if (TREE_CODE (lmem) == TREE_CODE (rmem)`
`3142`	`3142`	`&& TREE_CODE (lmem) == FIELD_DECL`
`3143`	`3143`	`&& TREE_CODE (DECL_CONTEXT (lmem)) == UNION_TYPE`