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Re: [PATCH 4/5] diff: use SWAP macro

From
Johannes Schindelin <johannes.schindelin@gmx.de>
Date
Jan 30, 2017, 16:04 UTC
Message-ID
<alpine.DEB.2.20.1701301704110.3469@virtualbox>
In-Reply-To
<84944ecd-d14e-b5e9-7566-9ab2b68c02fb@web.de>
Hi René,
On Sat, 28 Jan 2017, René Scharfe wrote:
Show 9 quoted lines
> Use the macro SWAP to exchange the value of pairs of variables instead
> of swapping them manually with the help of a temporary variable.  The
> resulting code is shorter and easier to read.
> 
> The two cases were not transformed by the semantic patch swap.cocci
> because it's extra careful and handles only cases where the types of all
> variables are the same -- and here we swap two ints and use an unsigned
> temporary variable for that.  Nevertheless the conversion is safe, as
> the value range is preserved with and without the patch.

One way to make this more obvious would be to change the type to signed first, and then transform (which then would catch these cases too, right?).

Ciao, Dscho

Previous: René ScharfeNext: René Scharfe
Message 44 of 50 in “introduce SWAP macro”
  1. 0/5 introduce SWAP macroRené Scharfe, Jan 28, 2017
  2. 1/5 add SWAP macroRené Scharfe, Jan 28, 2017
  3. Johannes SchindelinJan 30, 2017
  4. René ScharfeJan 30, 2017
  5. Johannes SchindelinJan 30, 2017
  6. René ScharfeJan 30, 2017
  7. Johannes SchindelinJan 31, 2017
  8. René ScharfeJan 31, 2017
  9. Ramsay JonesFeb 1, 2017
  10. Johannes SchindelinFeb 1, 2017
  11. Johannes SchindelinJan 30, 2017
  12. René ScharfeJan 30, 2017
  13. Johannes SixtJan 30, 2017
  14. Johannes SchindelinJan 30, 2017
  15. René ScharfeJan 30, 2017
  16. Brandon WilliamsJan 30, 2017
  17. René ScharfeJan 31, 2017
  18. Jeff KingJan 31, 2017
  19. Junio C HamanoJan 31, 2017
  20. Jeff KingJan 31, 2017
  21. Johannes SchindelinFeb 1, 2017
  22. Jeff KingFeb 1, 2017
  23. René ScharfeFeb 1, 2017
  24. Junio C HamanoFeb 1, 2017
  25. René ScharfeFeb 7, 2017
  26. Junio C HamanoFeb 7, 2017
  27. Johannes SchindelinFeb 8, 2017
  28. Johannes SchindelinJan 31, 2017
  29. Jeff KingApr 24, 2017
  30. Jeff KingApr 24, 2017
  31. Duy NguyenApr 24, 2017
  32. René ScharfeApr 28, 2017
  33. Jeff KingApr 28, 2017
  34. René ScharfeApr 29, 2017
  35. Jeff KingApr 30, 2017
  36. René ScharfeMay 2, 2017
  37. 2/5 apply: use SWAP macroRené Scharfe, Jan 28, 2017
  38. 3/5 use SWAP macroRené Scharfe, Jan 28, 2017
  39. Johannes SchindelinJan 30, 2017
  40. René ScharfeJan 30, 2017
  41. Junio C HamanoJan 30, 2017
  42. René ScharfeJan 31, 2017
  43. 4/5 diff: use SWAP macroRené Scharfe, Jan 28, 2017
  44. Johannes SchindelinJan 30, 2017
  45. René ScharfeJan 30, 2017
  46. Junio C HamanoJan 30, 2017
  47. 5/5 graph: use SWAP macroRené Scharfe, Jan 28, 2017
  48. Johannes SchindelinJan 30, 2017
  49. René ScharfeJan 30, 2017
  50. Junio C HamanoJan 30, 2017

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