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94 lines
3.1 KiB
94 lines
3.1 KiB
--- a/gcc/c/c-typeck.c
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+++ b/gcc/c/c-typeck.c
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@@ -62,9 +62,9 @@ int in_typeof;
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if expr.original_code == SIZEOF_EXPR. */
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tree c_last_sizeof_arg;
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-/* Nonzero if we've already printed a "missing braces around initializer"
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- message within this initializer. */
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-static int missing_braces_mentioned;
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+/* Nonzero if we might need to print a "missing braces around
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+ initializer" message within this initializer. */
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+static int found_missing_braces;
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static int require_constant_value;
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static int require_constant_elements;
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@@ -6363,6 +6363,9 @@ static int constructor_nonconst;
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/* 1 if this constructor is erroneous so far. */
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static int constructor_erroneous;
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+/* 1 if this constructor is the universal zero initializer { 0 }. */
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+static int constructor_zeroinit;
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+
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/* Structure for managing pending initializer elements, organized as an
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AVL tree. */
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@@ -6524,7 +6527,7 @@ start_init (tree decl, tree asmspec_tree
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constructor_stack = 0;
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constructor_range_stack = 0;
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- missing_braces_mentioned = 0;
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+ found_missing_braces = 0;
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spelling_base = 0;
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spelling_size = 0;
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@@ -6619,6 +6622,7 @@ really_start_incremental_init (tree type
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constructor_type = type;
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constructor_incremental = 1;
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constructor_designated = 0;
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+ constructor_zeroinit = 1;
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designator_depth = 0;
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designator_erroneous = 0;
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@@ -6816,11 +6820,8 @@ push_init_level (int implicit, struct ob
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set_nonincremental_init (braced_init_obstack);
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}
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- if (implicit == 1 && warn_missing_braces && !missing_braces_mentioned)
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- {
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- missing_braces_mentioned = 1;
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- warning_init (OPT_Wmissing_braces, "missing braces around initializer");
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- }
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+ if (implicit == 1)
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+ found_missing_braces = 1;
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if (TREE_CODE (constructor_type) == RECORD_TYPE
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|| TREE_CODE (constructor_type) == UNION_TYPE)
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@@ -6953,16 +6954,23 @@ pop_init_level (int implicit, struct obs
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}
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}
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+ if (vec_safe_length (constructor_elements) != 1)
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+ constructor_zeroinit = 0;
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+
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+ /* Warn when some structs are initialized with direct aggregation. */
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+ if (!implicit && found_missing_braces && warn_missing_braces
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+ && !constructor_zeroinit)
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+ {
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+ warning_init (OPT_Wmissing_braces,
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+ "missing braces around initializer");
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+ }
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+
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/* Warn when some struct elements are implicitly initialized to zero. */
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if (warn_missing_field_initializers
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&& constructor_type
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&& TREE_CODE (constructor_type) == RECORD_TYPE
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&& constructor_unfilled_fields)
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{
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- bool constructor_zeroinit =
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- (vec_safe_length (constructor_elements) == 1
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- && integer_zerop ((*constructor_elements)[0].value));
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-
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/* Do not warn for flexible array members or zero-length arrays. */
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while (constructor_unfilled_fields
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&& (!DECL_SIZE (constructor_unfilled_fields)
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@@ -8077,6 +8085,9 @@ process_init_element (struct c_expr valu
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designator_depth = 0;
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designator_erroneous = 0;
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+ if (!implicit && value.value && !integer_zerop (value.value))
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+ constructor_zeroinit = 0;
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+
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/* Handle superfluous braces around string cst as in
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char x[] = {"foo"}; */
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if (string_flag
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