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Previously, when NDEBUG was not defined, the allocations made for value metadata records were filled with 0xAA bytes. Here, that behavior is both expanded to all metadata records and enabled in release builds when the environment variable SWIFT_DEBUG_ENABLE_MALLOC_SCRIBBLE is set.
22 lines
1.7 KiB
Swift
22 lines
1.7 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-build-swift %s -o %t/main
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// RUN: %target-codesign %t/main
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// REQUIRES: executable_test
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// UNSUPPORTED: use_os_stdlib
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// RUN: env %env-SWIFT_DEBUG_HELP=YES %env-SWIFT_DEBUG_SOME_UNKNOWN_VARIABLE=42 %env-SWIFT_DEBUG_ENABLE_METADATA_ALLOCATION_ITERATION=YES %env-SWIFT_DEBUG_IMPLICIT_OBJC_ENTRYPOINT=abc %env-SWIFT_DETERMINISTIC_HASHING=whatever %env-SWIFT_ENABLE_MANGLED_NAME_VERIFICATION=YES %env-SWIFT_DEBUG_ENABLE_MALLOC_SCRIBBLE=YES %target-run %t/main 2>&1 | %FileCheck %s --dump-input fail
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// CHECK-DAG: {{Warning: unknown environment variable SWIFT_DEBUG_SOME_UNKNOWN_VARIABLE|Using getenv to read variables. Unknown SWIFT_DEBUG_ variables will not be flagged.}}
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// CHECK-DAG: Warning: cannot parse value SWIFT_DEBUG_IMPLICIT_OBJC_ENTRYPOINT=abc, defaulting to 2.
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// CHECK-DAG: Warning: cannot parse value SWIFT_DETERMINISTIC_HASHING=whatever, defaulting to false.
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// CHECK-DAG: Swift runtime debugging:
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// CHECK-DAG: bool SWIFT_DEBUG_ENABLE_METADATA_ALLOCATION_ITERATION [default: false] - Enable additional metadata allocation tracking for swift-inspect to use.
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// CHECK-DAG: uint8_t SWIFT_DEBUG_IMPLICIT_OBJC_ENTRYPOINT [default: 2] - Print warnings when using implicit @objc entrypoints. Set to desired reporting level, 0-3.
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// CHECK-DAG: bool SWIFT_DETERMINISTIC_HASHING [default: false] - Disable randomized hash seeding.
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// CHECK-DAG: bool SWIFT_ENABLE_MANGLED_NAME_VERIFICATION [default: false] - Enable verification that metadata can roundtrip through a mangled name each time metadata is instantiated.
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// CHECK-DAG: bool SWIFT_DEBUG_ENABLE_MALLOC_SCRIBBLE [default: false] - Scribble on runtime allocations such as metadata allocations.
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print("Hello, world")
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// CHECK: Hello, world
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