[lldb/Plugins] Add Swift Runtime Failure Recognizer#773
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This patch add support for Swift Runtime Failure messages in the debugger. The trap failure messages is wrapped into an artificial inline function in the debug info, whose name is the actual error message. When a thread stops in one of these inlined frames, the recognizer fetch the function name and set it as the stop reason message and select the parent frame as the current one. rdar://53003975 Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
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@swift-ci please test |
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Reviewed in #750. Create a new PR to accommodate the swift rebranch. |
eeckstein
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Feb 18, 2020
The implementation was done quite a while ago. Now, that we have support in lldb (swiftlang/llvm-project#773), we can enable it by default in the compiler. LLDB now shows the runtime failure reason, for example: * thread #1, queue = 'com.apple.main-thread', stop reason = Swift runtime failure: arithmetic overflow frame #1: 0x0000000100000f0d a.out`testit(a=127) at trap_message.swift:4 1 2 @inline(never) 3 func testit(_ a: Int8) -> Int8 { -> 4 return a + 1 5 } 6 For details, see swiftlang#25978 rdar://problem/51278690
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This patch add support for Swift Runtime Failure messages in the debugger.
The trap failure messages is wrapped into an artificial inline function
in the debug info, whose name is the actual error message.
When a thread stops in one of these inlined frames, the recognizer fetch
the function name and set it as the stop reason message and select the
parent frame as the current one.
rdar://53003975
Signed-off-by: Med Ismail Bennani medismail.bennani@gmail.com