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stacktraces can now show custom runtime msgs per frame (#13351)

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* stacktraces can now show custom runtime msgs
* improve tests/stdlib/tstackframes.nim
* fix test for --gc:arc
* test --stacktraceMsgs:on and --stacktraceMsgs:off
* --stacktracemsgs:off by default
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Timothee Cour 2020-03-30 04:45:32 -07:00 • committed by GitHub
commit 19cab9fa51
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14 changed files with 171 additions and 21 deletions
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9
lib/system/exceptions.nim
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@ -1,3 +1,7 @@
const NimStackTraceMsgs =
when defined(nimHasStacktraceMsgs): compileOption("stacktraceMsgs")
else: false
type
RootEffect* {.compilerproc.} = object of RootObj ## \
## Base effect class.
@ -16,6 +20,11 @@ type
procname*: cstring ## Name of the proc that is currently executing.
line*: int ## Line number of the proc that is currently executing.
filename*: cstring ## Filename of the proc that is currently executing.
when NimStackTraceMsgs:
frameMsg*: string ## When a stacktrace is generated in a given frame and
## rendered at a later time, we should ensure the stacktrace
## data isn't invalidated; any pointer into PFrame is
## subject to being invalidated so shouldn't be stored.
Exception* {.compilerproc, magic: "Exception".} = object of RootObj ## \
## Base exception class.