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Updated Hunting crashes: The ultimate guide (rest)

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Andreas Rumpf 2017-02-01 07:50:21 +01:00
parent ea165a062c
commit dbfdfb8a76
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Hunting-crashes:-The-ultimate-guide.rest
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@ -28,9 +28,12 @@ Test different compiler options
``-d:release`` vs debug mode is the obvious choice, but the Nim GC, allocator and standard library have many more checks you can should enable: ``-d:release`` vs debug mode is the obvious choice, but the Nim GC, allocator and standard library have many more checks you can should enable:
| -d:useSysAssert enables assertions in the system.nim, especially in Nim's allocator. ``-d:useSysAssert``
| -d:useGcAssert enables assertions in Nim's GC. enables assertions in the system.nim, especially in Nim's allocator.
| -d:nimBurnFree overwrite deallocated memory with 0xff bytes so that "access after free" triggers a segfault. ``-d:useGcAssert``
enables assertions in Nim's GC.
``-d:nimBurnFree``
overwrite deallocated memory with 0xff bytes so that "access after free" triggers a segfault.
Edit lib/system/mmdisp.nim and gc.nim Edit lib/system/mmdisp.nim and gc.nim
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