rust/25535 Apply embedded offset to enum variant calculation
Hopefully straightforward (and I didn't miss anything ...). gdb/ChangeLog 2020-02-19 Doug Evans <dje@google.com> PR rust/25535 * rust-lang.c (rust_print_enum): Apply embedded_offset to rust_enum_variant calculation. gdb/testsuite/ChangeLog 2020-02-19 Doug Evans <dje@google.com> PR rust/25535 * gdb.rust/simple.exp: Add test. * gdb.rust/simple.rs: Add test.
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2020-02-19 Doug Evans <dje@google.com>
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PR rust/25535
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* rust-lang.c (rust_print_enum): Apply embedded_offset to
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rust_enum_variant calculation.
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2020-02-19 Tom Tromey <tromey@adacore.com>
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* mips-tdep.h (mips_pc_is_mips): Parameter type is CORE_ADDR.
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@ -481,7 +481,8 @@ rust_print_enum (struct type *type, int embedded_offset,
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}
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const gdb_byte *valaddr = value_contents_for_printing (val);
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struct field *variant_field = rust_enum_variant (type, valaddr);
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struct field *variant_field = rust_enum_variant (type,
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valaddr + embedded_offset);
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embedded_offset += FIELD_BITPOS (*variant_field) / 8;
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struct type *variant_type = FIELD_TYPE (*variant_field);
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@ -1,3 +1,9 @@
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2020-02-19 Doug Evans <dje@google.com>
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PR rust/25535
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* gdb.rust/simple.exp: Add test.
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* gdb.rust/simple.rs: Add test.
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2020-02-19 Tom de Vries <tdevries@suse.de>
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* gdb.base/corefile-buildid.exp (check_exec_file): Match info files
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@ -357,6 +357,8 @@ gdb_test_sequence "ptype/o SimpleLayout" "" {
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gdb_test "print u2" " = simple::Union2 {name: \\\[1\\\]}"
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gdb_test "print nonzero_offset" " = simple::EnumWithNonzeroOffset {a: core::option::Option<u8>::Some\\(1\\), b: core::option::Option<u8>::None}"
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# PR rust/23626 - this used to crash. Note that the results are
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# fairly lax because most existing versions of Rust (those before the
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# DW_TAG_variant patches) do not emit what gdb wants here; and there
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@ -104,6 +104,12 @@ struct SimpleLayout {
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enum EmptyEnum {}
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#[derive(Debug)]
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struct EnumWithNonzeroOffset {
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a: Option<u8>,
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b: Option<u8>,
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}
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fn main () {
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let a = ();
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let b : [i32; 0] = [];
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@ -186,6 +192,8 @@ fn main () {
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let u2 = Union2 { name: [1] };
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let nonzero_offset = EnumWithNonzeroOffset { a: Some(1), b: None };
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println!("{}, {}", x.0, x.1); // set breakpoint here
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println!("{}", diff2(92, 45));
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empty();
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