Fix compile with gcc 14.2.1 (#1594)

* Fix compile with gcc 14.2.1 Fixes -Werror=maybe-uninitialized warnings * Updated to use INVALID_PTR rather than NULL. --------- Co-authored-by: Christoffer Lerno <[email protected]>
c3lang · Nov 3, 2024 · 2138312 · 2138312
1 parent ba34b45
commit 2138312
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Showing 4 changed files with 8 additions and 5 deletions.
diff --git a/src/compiler/compiler_internal.h b/src/compiler/compiler_internal.h
@@ -71,6 +71,8 @@ typedef uint16_t FileId;
 #define EXPAND_EXPR_STRING(str_) (str_)->const_expr.bytes.len, (str_)->const_expr.bytes.ptr
 #define TABLE_MAX_LOAD 0.5
 
+#define INVALID_PTR ((void*)(uintptr_t)0xAAAAAAAAAAAAAAAA)
+
 typedef struct Ast_ Ast;
 typedef struct Decl_ Decl;
 typedef struct TypeInfo_ TypeInfo;

diff --git a/src/compiler/llvm_codegen_expr.c b/src/compiler/llvm_codegen_expr.c
@@ -2967,7 +2967,7 @@ static void llvm_emit_slice_values(GenContext *c, Expr *slice, BEValue *parent_r
 
 	// Emit the start and end
 
-	Type *start_type;
+	Type *start_type = (Type*)INVALID_PTR;
 	Range range = slice->slice_expr.range;
 	BEValue start_index;
 	switch (range.range_type)

diff --git a/src/compiler/sema_expr.c b/src/compiler/sema_expr.c
@@ -1557,7 +1557,7 @@ INLINE bool sema_call_evaluate_arguments(SemaContext *context, CalledDecl *calle
 	bool has_named = false;
 	bool found_splat = false;
 	ArrayIndex last_index = -1;
-	Expr *last_named_arg;
+	Expr *last_named_arg = INVALID_PTR;
 	Expr *last = NULL;
 	int needed = func_param_count - (callee->struct_var ? 1 : 0);
 	for (unsigned i = 0; i < num_args; i++)
@@ -4280,7 +4280,7 @@ static bool sema_expr_rewrite_to_typeid_property(SemaContext *context, Expr *exp
 static inline bool sema_expr_fold_to_index(Expr *expr, Expr *parent, SubscriptIndex index_expr)
 {
 	ConstInitializer *init = parent->const_expr.initializer;
-	ConstInitializer *result;
+	ConstInitializer *result = INVALID_PTR;
 	ASSERT_SPAN(expr, !index_expr.start_from_end);
 	ArrayIndex index = exprptr(index_expr.expr)->const_expr.ixx.i.low;
 	switch (init->kind)

diff --git a/src/compiler/sema_initializers.c b/src/compiler/sema_initializers.c
@@ -42,8 +42,8 @@ static inline void sema_update_const_initializer_with_designator(
 
 bool const_init_local_init_may_be_global_inner(ConstInitializer *init, bool top)
 {
-	ConstInitializer **list;
-	unsigned len;
+	ConstInitializer **list = INVALID_PTR;
+	unsigned len = (unsigned)-1;
 	switch (init->kind)
 	{
 		case CONST_INIT_ZERO:
@@ -1318,3 +1318,4 @@ static Decl *sema_resolve_element_for_name(SemaContext *context, Decl **decls, D
 	(*index)++;
 	return found;
 }
+