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added a switch -d:nimEmulateOverflowChecks for broken or old GCC versions (#13692)

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Andreas Rumpf 2020-03-19 09:56:30 +01:00 • committed by GitHub
commit ba6e7c6365
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4 changed files with 13 additions and 5 deletions
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lib/system/integerops.nim
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@ -19,7 +19,7 @@ proc raiseDivByZero {.compilerproc, noinline.} =
{.pragma: nimbaseH, importc, nodecl, noSideEffect, compilerproc.}
when defined(gcc) or defined(clang):
when (defined(gcc) or defined(clang)) and not defined(nimEmulateOverflowChecks):
# take the #define from nimbase.h
proc nimAddInt(a, b: int, res: ptr int): bool {.nimbaseH.}