helixhorned 3e4357c6a4 Integer Overflow Offensive continued: first round of -ftrapv - cleanness. ... That is, "clang -ftrapv" builds don't abort almost immediately after entering a level. There are various classes of overflow bugs, needing different handling: - Some texture mapping code was written with signed integer wrapping semantics in mind. In some places, we're able to get away with unsigned casts. - sometimes, we really need a wider range, like when calculating distances or dot products - negating INT_MIN. Here, we cast to int64_t temporarily. Note that if the result is 32-bit wide, no 64-bit code may actually need to be generated. - shifting into a signed integer's sign bit. We cast to uint32 here. - in hitscan(), at the "abyss crash prevention code" comment, it's clearly the other code that is better... This is not merely done for pedantry, but rather makes it easier to track down overflow bugs having a real impact on the game. git-svn-id: https://svn.eduke32.com/eduke32@2784 1a8010ca-5511-0410-912e-c29ae57300e0		2012-06-26 19:49:53 +00:00
polymer	Integer Overflow Offensive continued: first round of -ftrapv - cleanness.	2012-06-26 19:49:53 +00:00
polymer-perf	svn merge -r 1800:1841 ../polymer	2011-03-13 02:23:18 +00:00
.gitignore	Add .gitignore generated from `git svn show-ignore`.	2012-05-20 07:23:12 +00:00