Support endianness mark in test case check files

Add new endianness mark ('be' or 'le') into stderr file suffixes, which
helps when memory layout dumps in error messages are different.

Author: ecnelises

src/test/ui/const-ptr/forbidden_slices.32bit.stderr renamed to src/test/ui/const-ptr/forbidden_slices.32bit.be.stderr

@@ -1,4 +1,5 @@
 // stderr-per-bitwidth
+// stderr-per-endianness
 // normalize-stderr-test "alloc[0-9]+" -> "ALLOC_ID"
 // normalize-stderr-test "a[0-9]+\+0x" -> "A_ID+0x"
 // error-pattern: could not evaluate static initializer

src/test/ui/const-ptr/forbidden_slices.64bit.stderr renamed to src/test/ui/const-ptr/forbidden_slices.64bit.be.stderr

@@ -0,0 +1,121 @@
+error[E0080]: it is undefined behavior to use this value
+  --> $DIR/ub-enum.rs:25:1
+   |
+LL | const BAD_ENUM: Enum = unsafe { mem::transmute(1usize) };
+   | ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered 0x00000001, but expected a valid enum tag
+   |
+   = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
+   = note: the raw bytes of the constant (size: 4, align: 4) {
+               00 00 00 01                                     │ ....
+           }
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:28:1
+   |
+LL | const BAD_ENUM_PTR: Enum = unsafe { mem::transmute(&1) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:31:1
+   |
+LL | const BAD_ENUM_WRAPPED: Wrap<Enum> = unsafe { mem::transmute(&1) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: it is undefined behavior to use this value
+  --> $DIR/ub-enum.rs:43:1
+   |
+LL | const BAD_ENUM2: Enum2 = unsafe { mem::transmute(0usize) };
+   | ^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered 0x00000000, but expected a valid enum tag
+   |
+   = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
+   = note: the raw bytes of the constant (size: 4, align: 4) {
+               00 00 00 00                                     │ ....
+           }
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:45:1
+   |
+LL | const BAD_ENUM2_PTR: Enum2 = unsafe { mem::transmute(&0) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:48:1
+   |
+LL | const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:57:42
+   |
+LL | const BAD_ENUM2_UNDEF : Enum2 = unsafe { MaybeUninit { uninit: () }.init };
+   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:62:1
+   |
+LL | const BAD_ENUM2_OPTION_PTR: Option<Enum2> = unsafe { mem::transmute(&0) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: it is undefined behavior to use this value
+  --> $DIR/ub-enum.rs:79:1
+   |
+LL | const BAD_UNINHABITED_VARIANT1: UninhDiscriminant = unsafe { mem::transmute(1u8) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(B)>.0: encountered a value of the never type `!`
+   |
+   = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
+   = note: the raw bytes of the constant (size: 1, align: 1) {
+               01                                              │ .
+           }
+
+error[E0080]: it is undefined behavior to use this value
+  --> $DIR/ub-enum.rs:81:1
+   |
+LL | const BAD_UNINHABITED_VARIANT2: UninhDiscriminant = unsafe { mem::transmute(3u8) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(D)>.0: encountered a value of uninhabited type Never
+   |
+   = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
+   = note: the raw bytes of the constant (size: 1, align: 1) {
+               03                                              │ .
+           }
+
+error[E0080]: it is undefined behavior to use this value
+  --> $DIR/ub-enum.rs:89:1
+   |
+LL | const BAD_OPTION_CHAR: Option<(char, char)> = Some(('x', unsafe { mem::transmute(!0u32) }));
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Some)>.0.1: encountered 0xffffffff, but expected a valid unicode scalar value (in `0..=0x10FFFF` but not in `0xD800..=0xDFFF`)
+   |
+   = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
+   = note: the raw bytes of the constant (size: 8, align: 4) {
+               00 00 00 78 ff ff ff ff                         │ x.......
+           }
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:94:77
+   |
+LL | const BAD_UNINHABITED_WITH_DATA1: Result<(i32, Never), (i32, !)> = unsafe { mem::transmute(0u64) };
+   |                                                                             ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:96:77
+   |
+LL | const BAD_UNINHABITED_WITH_DATA2: Result<(i32, !), (i32, Never)> = unsafe { mem::transmute(0u64) };
+   |                                                                             ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type
+
+error: aborting due to 13 previous errors
+
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/const-ptr/forbidden_slices.rs

@@ -1,5 +1,5 @@
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:24:1
+  --> $DIR/ub-enum.rs:25:1
    |
 LL | const BAD_ENUM: Enum = unsafe { mem::transmute(1usize) };
    | ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered 0x00000001, but expected a valid enum tag
@@ -10,7 +10,7 @@ LL | const BAD_ENUM: Enum = unsafe { mem::transmute(1usize) };
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:27:1
+  --> $DIR/ub-enum.rs:28:1
    |
 LL | const BAD_ENUM_PTR: Enum = unsafe { mem::transmute(&1) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
@@ -19,7 +19,7 @@ LL | const BAD_ENUM_PTR: Enum = unsafe { mem::transmute(&1) };
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:30:1
+  --> $DIR/ub-enum.rs:31:1
    |
 LL | const BAD_ENUM_WRAPPED: Wrap<Enum> = unsafe { mem::transmute(&1) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
@@ -28,7 +28,7 @@ LL | const BAD_ENUM_WRAPPED: Wrap<Enum> = unsafe { mem::transmute(&1) };
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:42:1
+  --> $DIR/ub-enum.rs:43:1
    |
 LL | const BAD_ENUM2: Enum2 = unsafe { mem::transmute(0usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered 0x00000000, but expected a valid enum tag
@@ -39,7 +39,7 @@ LL | const BAD_ENUM2: Enum2 = unsafe { mem::transmute(0usize) };
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:44:1
+  --> $DIR/ub-enum.rs:45:1
    |
 LL | const BAD_ENUM2_PTR: Enum2 = unsafe { mem::transmute(&0) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
@@ -48,7 +48,7 @@ LL | const BAD_ENUM2_PTR: Enum2 = unsafe { mem::transmute(&0) };
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:47:1
+  --> $DIR/ub-enum.rs:48:1
    |
 LL | const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
@@ -57,13 +57,13 @@ LL | const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:56:42
+  --> $DIR/ub-enum.rs:57:42
    |
 LL | const BAD_ENUM2_UNDEF : Enum2 = unsafe { MaybeUninit { uninit: () }.init };
    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:61:1
+  --> $DIR/ub-enum.rs:62:1
    |
 LL | const BAD_ENUM2_OPTION_PTR: Option<Enum2> = unsafe { mem::transmute(&0) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
@@ -72,7 +72,7 @@ LL | const BAD_ENUM2_OPTION_PTR: Option<Enum2> = unsafe { mem::transmute(&0) };
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:78:1
+  --> $DIR/ub-enum.rs:79:1
    |
 LL | const BAD_UNINHABITED_VARIANT1: UninhDiscriminant = unsafe { mem::transmute(1u8) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(B)>.0: encountered a value of the never type `!`
@@ -83,7 +83,7 @@ LL | const BAD_UNINHABITED_VARIANT1: UninhDiscriminant = unsafe { mem::transmute
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:80:1
+  --> $DIR/ub-enum.rs:81:1
    |
 LL | const BAD_UNINHABITED_VARIANT2: UninhDiscriminant = unsafe { mem::transmute(3u8) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(D)>.0: encountered a value of uninhabited type Never
@@ -94,7 +94,7 @@ LL | const BAD_UNINHABITED_VARIANT2: UninhDiscriminant = unsafe { mem::transmute
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:88:1
+  --> $DIR/ub-enum.rs:89:1
    |
 LL | const BAD_OPTION_CHAR: Option<(char, char)> = Some(('x', unsafe { mem::transmute(!0u32) }));
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Some)>.0.1: encountered 0xffffffff, but expected a valid unicode scalar value (in `0..=0x10FFFF` but not in `0xD800..=0xDFFF`)
@@ -105,13 +105,13 @@ LL | const BAD_OPTION_CHAR: Option<(char, char)> = Some(('x', unsafe { mem::tran
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:93:77
+  --> $DIR/ub-enum.rs:94:77
    |
 LL | const BAD_UNINHABITED_WITH_DATA1: Result<(i32, Never), (i32, !)> = unsafe { mem::transmute(0u64) };
    |                                                                             ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:95:77
+  --> $DIR/ub-enum.rs:96:77
    |
 LL | const BAD_UNINHABITED_WITH_DATA2: Result<(i32, !), (i32, Never)> = unsafe { mem::transmute(0u64) };
    |                                                                             ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type

src/test/ui/consts/const-eval/ub-enum.32bit.be.stderr

@@ -0,0 +1,121 @@
+error[E0080]: it is undefined behavior to use this value
+  --> $DIR/ub-enum.rs:25:1
+   |
+LL | const BAD_ENUM: Enum = unsafe { mem::transmute(1usize) };
+   | ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered 0x0000000000000001, but expected a valid enum tag
+   |
+   = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
+   = note: the raw bytes of the constant (size: 8, align: 8) {
+               00 00 00 00 00 00 00 01                         │ ........
+           }
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:28:1
+   |
+LL | const BAD_ENUM_PTR: Enum = unsafe { mem::transmute(&1) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:31:1
+   |
+LL | const BAD_ENUM_WRAPPED: Wrap<Enum> = unsafe { mem::transmute(&1) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: it is undefined behavior to use this value
+  --> $DIR/ub-enum.rs:43:1
+   |
+LL | const BAD_ENUM2: Enum2 = unsafe { mem::transmute(0usize) };
+   | ^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered 0x0000000000000000, but expected a valid enum tag
+   |
+   = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
+   = note: the raw bytes of the constant (size: 8, align: 8) {
+               00 00 00 00 00 00 00 00                         │ ........
+           }
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:45:1
+   |
+LL | const BAD_ENUM2_PTR: Enum2 = unsafe { mem::transmute(&0) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:48:1
+   |
+LL | const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:57:42
+   |
+LL | const BAD_ENUM2_UNDEF : Enum2 = unsafe { MaybeUninit { uninit: () }.init };
+   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:62:1
+   |
+LL | const BAD_ENUM2_OPTION_PTR: Option<Enum2> = unsafe { mem::transmute(&0) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: it is undefined behavior to use this value
+  --> $DIR/ub-enum.rs:79:1
+   |
+LL | const BAD_UNINHABITED_VARIANT1: UninhDiscriminant = unsafe { mem::transmute(1u8) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(B)>.0: encountered a value of the never type `!`
+   |
+   = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
+   = note: the raw bytes of the constant (size: 1, align: 1) {
+               01                                              │ .
+           }
+
+error[E0080]: it is undefined behavior to use this value
+  --> $DIR/ub-enum.rs:81:1
+   |
+LL | const BAD_UNINHABITED_VARIANT2: UninhDiscriminant = unsafe { mem::transmute(3u8) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(D)>.0: encountered a value of uninhabited type Never
+   |
+   = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
+   = note: the raw bytes of the constant (size: 1, align: 1) {
+               03                                              │ .
+           }
+
+error[E0080]: it is undefined behavior to use this value
+  --> $DIR/ub-enum.rs:89:1
+   |
+LL | const BAD_OPTION_CHAR: Option<(char, char)> = Some(('x', unsafe { mem::transmute(!0u32) }));
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Some)>.0.1: encountered 0xffffffff, but expected a valid unicode scalar value (in `0..=0x10FFFF` but not in `0xD800..=0xDFFF`)
+   |
+   = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.
+   = note: the raw bytes of the constant (size: 8, align: 4) {
+               00 00 00 78 ff ff ff ff                         │ x.......
+           }
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:94:77
+   |
+LL | const BAD_UNINHABITED_WITH_DATA1: Result<(i32, Never), (i32, !)> = unsafe { mem::transmute(0u64) };
+   |                                                                             ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:96:77
+   |
+LL | const BAD_UNINHABITED_WITH_DATA2: Result<(i32, !), (i32, Never)> = unsafe { mem::transmute(0u64) };
+   |                                                                             ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type
+
+error: aborting due to 13 previous errors
+
+For more information about this error, try `rustc --explain E0080`.