Bug numbers refer to the BTS at http://pari.math.u-bordeaux.fr/Bugs/

Done for version 2.11.3 (released 03/03/2020):
[last column crossreferences current development release 2.12.1]
  Fixed
    1- qfisom([16,6;6,10],[4,3;3,10]) was not 0. [#2140]          [2.12.0-F102]
    2- mfeval: wrong result when level and space didn't match     [2.12.0-F103]
BA  3- nfisincl(x^3+9,x^6+2187): wrong result [#2144]             [2.12.0-F104]
    4- ispower(27,2^60) -> SEGV [#2145]                           [2.12.0-F105]
BA  5- matsolve(M,vector(n)) return result of wrong dimension     [2.12.0-F106]
    6- [Windows] no longer crash on deep recursion [#2105]        [2.12.0-F107]
    7- factor(Mod(x^3 + x + y^2,2)) -> oo loop [#2148]            [2.12.0-F108]
BA  8- plotlines flag was ignored                                          [F1]
    9- fileopen(,"w" or "a") was bypassing the check for 'secure' default  [F2]
   10- bnfcertify did not certify correctly its argument when DEBUGLEVEL > 1
       (\g 2 and above) and the computed class group was trivial (introduced
       in 2002, commit d3d44841). The code was correct at \g1 or \g0, and in
       all cases if the computed class group was non-trivial.              [F4]
   11- [mf,F] = mffromqf([2,0;0,2]); L=lfunmf(mf,F) => wrong values        [F7]
   12- t=mfTheta();mfslashexpansion(mfinit(t),t,[0,1;-1,0],1,1) -> error   [F8]
   13- poldisc(x^4 + 8/y*x) -> type error in Q_divi_to_int [#2157]         [F9]
   14- T=mfTheta(); mfeval(mfinit(T),T,I/10) -> wrong sign                [F10]
   15- quadtofp(quadgen(-3)) -> t_FRAC component [#2158]                  [F13]
   16- conjvec(t_FFELT of characteristic 2) was missing a conjugate       [F15]
   17- nf2 = nfnewprec(nf) could return incompatible nf2 [#2154]          [F16]
   18- issquare(non square t_FFELT, &x) -> SEGV [#2163]                   [F20]
   19- modular symbols package: better type checks                        [F23]
   20- division by 0 in Flx_extresultant when one input is 0              [F24]
   21- internal error in isprime(,1) after addprime() [#2166]             [F26]
   22- ZM_gauss returned incorrect result for t_MAT RHS and 0 input       [F27]
BA 23- lfunhardy(..., t) with t<0 -> error                                [F28]
BA 24- ellweilpairing(E,P,P, odd m) -> wrong result [#2172]               [F29]
PB 25- FlxqM_mul could return wrong result [#2174]                        [F30]
   26- p = 4*vecprod(primes([3,373]))*587-1; quadclassunit(-p) -> SEGV    [F31]
   27- M=mfinit([11,2,Mod(3,11)]); f=mfbasis(M)[1];
       lfuncheckfeq(lfunmf(M,f)) -> type error                            [F34]
   28- rare random SEGV in nfbasis [#2178]                                [F35]
   29- missing type checks in lfunthetacheckinit [#2179]                  [F36]
   30- idealispower(x,n,&y): y could be incorrect [#2181]                 [F37]
   31- SEGV in idealispower [#2183]                                       [F38]
XR 32- factorpadic: incorrect factors (might not lift to Q))
        E.g. T=polsubcyclo(271,9); factorpadic(T,3,7)[4,1]                [F40]
BA 33- polcompositum(x^2+x/3+1,x^2+x/3+1) -> SEGV                         [F41]
   34- p=nextprime(2^20);q=nextprime(2*p);n=q*p;v=n+1;P=x^2-1;
        zncoppersmith(v*P,v*n,p,p*v) --> oo loop                          [F42]
   35- missing reduction of pr.gen in idealprimedec [ slowdown ]
        + nfmodprinit [ division by 0 ]                                   [F43]
   36- lfuninit: lfunrootres calls too expensive if rootno and polar part [F47]
   37- incorrect rounding in divrr(realprec = 3)                          [F48]
   38- polrootsreal(x+0.) -> SEGV                                         [F49]
   39- qflllgram([2,2,3;4,5,6]) -> SEGV                                   [F51]
   40- printf("%10.6f\n",2^-100) -> SEGV [#2198]                          [F52]
BA 41- ((x^7+x^3+x+1)*Mod(1,Mod(1,2)*d))%(x^4+x^3+x^2+1)->x^3+x
        instead of Mod(1,2)*x^3+Mod(1,2)*x [#2199]                        [F54]
   42- ellocalred / K != Q: wrong encoding for I0 (kod = 1 instead of 0)  [F56]

  Added
IZ  1- [win32+gp-sta] support for install()                        [2.12.0-A65]

Done for version 2.11.2 (released 12/05/2019):
[last column crossreferences current development release 2.12.0]
  Fixed
      1- make ellheight(E, torsion point) return an exact 0 [#2109]       [F45]
BA    2- hyperellcharpoly: wrong results over Z/3Z                        [F46]
      3- gmp kernel: off-by-1 error in red_mongomery [read uninitialized  [F47]
         memory, then ignores result]
      4- intnuminit([-1,-1/2],[1,-1/2]) twice slower than it should       [F48]
      5- forcomposite(n=2,4,print(n)) -> empty [#2096]                    [F49]
FB    6- [Configure] library not found despite --with-readline-lib [#2097][F53]
      7- minpoly(Mod(1,t^2)) -> SEGV [#2102]                              [F55]
      8- a=ffgen(3^2,'a);poldisc(x^6+a*x+y) -> division by 0 [ positive   [F56]
         characteristic with a few t_INT coefficients ]
BA    9- [pthread] parapply could crash                                   [F58]
BA   10- ffinvmap(m) could SEGV on bad input                              [F59]
     11- ellisdivisible(E/K number field in 'x) -> incorrect priority     [F60]
     12- idealispower(nf, t_INT n) possibly wrong if (n, nf.disc) > 1     [F61]
     13- zeta''(0): all precision lost [more generally f'...'(n quotes)
        imprecise in the neighbourhood of 0, while derivnum(,n) was OK]   [F62]
     14- sumdigits(negative number, B) sometimes negative                 [F63]
     15- poldiscfactors(x^0) -> division by 0                             [F64]
     16- factormod(x^3+1,[y^2+1,2]) -> SEGV                               [F65]
     17- factormod(x^3+1,[y^2+1,5]) -> weird error message                [F66]
BA   18- fix inefficiency in fplll not present in original code           [F69]
     19- polrootsreal(x^4+2*x^3+x^2/3+x/100-1/2000,[1/100,oo]): no root   [F70]
     20- polrootsreal(x^4+2*x^3+x^2/3+x/100-1/1000,[1/10,oo]): extra root [F71]
     21- lfun may crash on lfuncreate input with too short an vector      [F72]
BA   22- incorrect use of graphcolors -> SEGV                             [F73]
     23- forcomposite(..., oo, ) was not supported                        [F74]
BA   24- lfunartin with poles: incorrect result                           [F75]
JD   25- factor: significant pointers lost [#2125]                        [F76]
BA   26- matdet/matrank over large fields was inefficient                 [F77]
     27- poldisc(y^2/x + 1, y) -> error [also affects polresultant]       [F78]
     28- poldisc(x^2/y + 1, y) -> 0 [also affects polresultant]           [F79]
     29- ispower(2, 2^64) -> error                                        [F80]
     30- (f(x) = x*'y); f'(1) -> error                                    [F81]
BA   31- sqrtn(Mod(3,19),4) -> no error [#2127]                           [F82]
     32- nfhnfmod: wrong result                                           [F83]
     33- matdet(mat with t_RFRAC entries): wrong result [#2128]           [F84]
     34- n-th derivative of zetahurwitz used 'seriesprecision' instead
         of n + imprecise value when n large [#2130]                      [F85]
     35- lfunzeros(f, [0, b]) wasn't allowed                              [F86]
     36- mateigen(): typo causing wrong results when correct results were
        achievable [#2131]                                                [F87]
     37- intnum(x=-oo,[0,-1/2],1/sqrt(-x*(x^4+1))) -> division by 0       [F88]
     38- printtex(quadgen(-3,'z)) ==> w                                   [F90]
BA   39- [a,b]=a could lead to memory corruption                          [F91]
     40- memory leak in cgetalloc when lg overflows                       [F92]
     41- possible SEGV in padicappr [#2133]                               [F93]
     42- core() could destroy its input, if stored in a GP variable       [F96]
     43- quadgen(2^64+1) * 1. => junk (stack corruption in quad_disc).    [F97]
     44- ellmoddegree: infinite loop and stack corruption (e.g on 52a2)   [F98]
     45- ellmoddegree(ellinit("10890ba6")) -> wrong result                [F99]
     46- nfgcd called ZX_resultant(a,T) with typ(a) == t_INT             [F100]

Done for version 2.11.1 (released 1/12/2018):
[last column crossreferences current development release 2.12.0]
  Fixed
      1- heap-buffer-overflow in init_prefix [readline]                    [F4]
      2- mfsplit(mf,,flag) could return uninitialized objects => SEGV      [F5]
      3- mfeisenstein(k,,chi) was treated as E(k,chi) instead of E(k,1,chi)[F6]
      4- poldegree(y/x) -> 0 [ instead of -1 ]                             [F7]
      5- sumeulerrat(y/x^2,1) -> junk                                      [F8]
HC    6- incgam(-1000.4,2) -> SEGV                                         [F9]
      7- mfatkininit(mfinit([366,2]),2) -> precision error                [F10]
      8- forprimestep: wrong when wrapping over word boundary [#2071]     [F11]
      9- mfbracket: [f,g]_m was multiplied by (-1)^m                      [F12]
     10- wrong results in mfatkininit / mfatkineigenvalues [#2073/#2074]  [F13]
     11- issquare(Mod(x,ffinit(3,2))) -> wrong result [broken Fq_ispower] [F14]
     12- possible SEGV in rnfpseudobasis(, [pol,lim])                     [F15]
     13- wrong result in elllog over F_p, p in [2^63,2^64[                [F16]
     14- wrong result in mfsymboleval when path extremities are close to  [F17]
         real axis (cusps were OK) [#2075]
     15- mfcoefs(mfDelta(),0) -> SEGV [#2078]                             [F18]
     16- GC error in lfuncreate(elliptic curve over number field) [#2080] [F19]
     17- X11 and Qt graphic engine: pari_close called too soon => crash   [F20]
     18- pariold.h: mix up with obsoleted  taille / taille2               [F21]
     19- foo(n)=vector(n)[1..n];123; would corrupt the GP interpreter     [F22]
     20- Pol(0)/'x -> t_INT 0 (instead of 0*x^0)                          [F23]
         Pol(0)/(Mod(1,2)*'x) -> t_INT 0 (instead of Mod(0,2)*x^0)
     21- missing typecheck in nfalgtobasis [#2084]                        [F24]
     22- dbllog2(t_COMPLEX of t_FRAC) => junk                             [F25]
     23- nffactor(t_POL, t_POL) => bug in LLL_cmbf [#2083]                [F26]
     24- ideallog(pure archimedean conductor, t_FRAC) -> log(0) error     [F27]
     25- lfunrootres: avoid oo-loop                                       [F28]
     26- mfgaloistype: dihedral forms possibly incorrect for N > 3000     [F29]
     27- mfgaloistype: error on mf=mfinit([1159,1,Mod(930,1159)],0);      [F30]
     28- hash_GEN(x) differed depending on whether x was a clone          [F33]
BA   29- [mpi] setting nbthreads in .gprc could lead to crashes.          [F34]
     30- accuracy too large in derivnum => slowdown                       [F35]
     31- nfisincl(x^5-x^4+x^3-2*x^2+3*x-1,x^20+x^15+x^10+x^5+1) -> SEGV   [F36]
     32- stack corruption in addsub_frac                                  [F37]
AP   33- segfault in rnfidealup [#2093]                                   [F38]
     34- Ser(x,x,0) -> error instead of O(x) [#2092]                      [F39]
     35- fix mspolygon(,2) [add 1/3rd hyperbolic triangles + fix labels]  [F40]
     36- factor(3/(x^5+3*y*x^4+3*y^2*x^3+y^3*x^2)) -> SEGV                [F41]
     37- catastrophic cancellation in acosh / asinh for large t_COMPLEX   [F43]
     38- zeta(1/2 + I*t) => internal error                                [F44]
