Make it compile with gcc 11.1.0.

src/P434/P434_compressed.c

@@ -201,9 +201,6 @@ const unsigned int ph3_path[PLEN_3] = {
 const uint64_t u_entang[2*NWORDS64_FIELD] = {
 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0xE858,0x0,0x0,0x721FE809F8000000,0xB00349F6AB3F59A9,0xD264A8A8BEEE8219,0x1D9DD4F7A5DB5};
 
-const uint64_t u0_entang[2*NWORDS64_FIELD] = {
-0x742C,0x0,0x0,0xB90FF404FC000000,0xD801A4FB559FACD4,0xE93254545F77410C,0xECEEA7BD2EDA,0x742C,0x0,0x0,0xB90FF404FC000000,0xD801A4FB559FACD4,0xE93254545F77410C,0xECEEA7BD2EDA};
-
 // Elligator constant U = min{u0+k} for k=1,2... such that u0+k is a square in F_p^2 for generating 3^n torsion bases
 const uint64_t U3[2*NWORDS64_FIELD] = {0xE858,0x0,0x0,0x721FE809F8000000,0xB00349F6AB3F59A9,0xD264A8A8BEEE8219,0x1D9DD4F7A5DB5,0x742C,0x0,0x0,0xB90FF404FC000000,0xD801A4FB559FACD4,0xE93254545F77410C,0xECEEA7BD2EDA};
 

src/P503/P503_compressed.c

@@ -206,10 +206,6 @@ const unsigned int ph3_path[PLEN_3] = {
 const uint64_t u_entang[2 * NWORDS64_FIELD] = {
 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x7F3,0x0,0x0,0xBC00000000000000,0xB48DD9032BABBDC8,0x87354452517EE94B,0xB55528D05AECDDB4,0xD90684A9D9488 };
 
-const uint64_t u0_entang[2 * NWORDS64_FIELD] = {
-0x3F9,0x0,0x0,0xB400000000000000,0x63CB1A6EA6DED2B4,0x51689D8D667EB37D,0x8ACD77C71AB24142,0x26FBAEC60F5953,0x3F9,0x0,0x0,0xB400000000000000,
-0x63CB1A6EA6DED2B4,0x51689D8D667EB37D,0x8ACD77C71AB24142,0x26FBAEC60F5953 };
-
 
 // Elligator constant U = min{u0+k} for k=1,2... such that u0+k is a square in F_p^2 for generating 3^n torsion bases
 const uint64_t U3[2*NWORDS64_FIELD] = {0x7F3,0x0,0x0,0xBC00000000000000,0xB48DD9032BABBDC8,0x87354452517EE94B,0xB55528D05AECDDB4,0xD90684A9D9488,0x3F9,0x0,0x0,0xB400000000000000,0x63CB1A6EA6DED2B4,0x51689D8D667EB37D,0x8ACD77C71AB24142,0x26FBAEC60F5953};

src/P610/P610_compressed.c

@@ -195,10 +195,6 @@ const unsigned int ph3_path[PLEN_3] = {
 const uint64_t u_entang[2*NWORDS64_FIELD] = {
 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0xCE1991CC,0x0,0x0,0x0,0x3468000000000000,0x9B33857A50E2F47F,0x149430734647A838,0xA56C442BA0D5A3C4,0x26D204DD0C595E7B,0x21129D2C8};
 
-const uint64_t u0_entang[2*NWORDS64_FIELD] = {
-0x670CC8E6,0x0,0x0,0x0,0x9A34000000000000,0x4D99C2BD28717A3F,0xA4A1839A323D41C,0xD2B62215D06AD1E2,0x1369026E862CAF3D,0x10894E964,0x670CC8E6,0x0,0x0,0x0,0x9A34000000000000,
-0x4D99C2BD28717A3F,0xA4A1839A323D41C,0xD2B62215D06AD1E2,0x1369026E862CAF3D,0x10894E964};
-
 
 // Elligator constant U = min{u0+k} for k=1,2... such that u0+k is a square in F_p^2 for generating 3^n torsion bases
 const uint64_t U3[2*NWORDS64_FIELD] = {0x2033FEC80,0x0,0x0,0x0,0x2700000000000000,0x211031E0758202E1,0xFDA2FA9626933136,0xB8E34478F08DCF14,0x5DECEAA3FB0FBB1B,0x32FB4023,0x670CC8E6,0x0,0x0,0x0,0x9A34000000000000,0x4D99C2BD28717A3F,0xA4A1839A323D41C,0xD2B62215D06AD1E2,0x1369026E862CAF3D,0x10894E964};

src/P751/P751_compressed.c

@@ -211,12 +211,6 @@ const uint64_t u_entang[2*NWORDS64_FIELD] = {
 0x000000000004935a, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0620000000000000, 
 0xaa4f63c86eb8d8cd, 0xd2ef2f7e7e9e49a0, 0x913b6f6558b89c5c, 0x99496873a40ed2ad, 0x21ef24d8ea258fd2, 0x00005ab64979cbc4};
 
-const uint64_t u0_entang[2*NWORDS64_FIELD] = {
-0x00000000000249ad, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x8310000000000000,
-0x5527b1e4375c6c66, 0x697797bf3f4f24d0, 0xc89db7b2ac5c4e2e, 0x4ca4b439d2076956, 0x10f7926c7512c7e9, 0x00002d5b24bce5e2,
-0x00000000000249ad, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x8310000000000000,
-0x5527b1e4375c6c66, 0x697797bf3f4f24d0, 0xc89db7b2ac5c4e2e, 0x4ca4b439d2076956, 0x10f7926c7512c7e9, 0x00002d5b24bce5e2};
-
 
 // Elligator constant U = min{u0+k} for k=1,2... such that u0+k is a square in F_p^2 for generating 3^n torsion bases
 const uint64_t U3[2*NWORDS64_FIELD] = {0x926B5,0x0,0x0,0x0,0x0,0x1D90000000000000,0x70B2310B937938F1,0xCB48C3E2E944C6CA,0x1A284662DA855042,0xAD301BE2EB6B4E13,0x35CBB9123C90433E,0x4586BDB1A06C,0x249AD,0x0,0x0,0x0,0x0,0x8310000000000000,0x5527B1E4375C6C66,0x697797BF3F4F24D0,0xC89DB7B2AC5C4E2E,0x4CA4B439D2076956,0x10F7926C7512C7E9,0x2D5B24BCE5E2};

src/compression/dlog.c

@@ -131,14 +131,14 @@ int ord2w_dlog(const felm_t *r, const int *logT, const felm_t *Texp)
     }
     return 0;
 }
-
+#include <stdio.h>
 // Input: h =[x,y] = rho^D in G_{ell=2,w} generated by rho, i.e., |h| <= 2^w
 // Output: The signed digit D in {-ell^(w-1), ..., ell^(w-1)}
 int ord2w_dloghyb(const felm_t *h, const int *logT, const felm_t *Texp, const felm_t *G)
 {
     int k = 0, d = 0, index = 0, ord = 0, tmp = 0, w = W_2, w2 = w - W_2_1, i_j = 0, t;
     uint8_t inv = 0, flag = 0;
-    f2elm_t H[W_2_1] = {0}; // Size of H should be max of {W_2_1, W_2 - W_2_1}
+    f2elm_t H[W_2_1+1] = {0}; // Size of H should be max of {W_2_1+1, W_2 - W_2_1}
     felm_t one = {0};
 
     fpcopy((digit_t*)&Montgomery_one, one);    

src/compression/torsion_basis.c

@@ -449,7 +449,7 @@ static void BuildOrdinary2nBasis_dual(const f2elm_t A, const f2elm_t Ds[][2], po
     unsigned int i;
     felm_t t0;
     f2elm_t A6 = {0};
-    point_proj_t xs[3] = {0};
+    point_proj_t xs[3] = {0};    
 
     // Generate x-only entangled basis 
     BuildEntangledXonly(A, xs, qnr, ind);
@@ -470,7 +470,7 @@ static void BuildOrdinary2nBasis_dual(const f2elm_t A, const f2elm_t Ds[][2], po
     fpadd(t0, t0, A6[0]);
     fpadd(A6[0], t0, A6[0]);
 
-    CompleteMPoint(A6, xs[0], Rs[0]);
+    CompleteMPoint(A6, xs[0]->X, xs[0]->Z, Rs[0]);
     RecoverY(A6, xs, Rs);
 }
 

src/ec_isogeny.c

@@ -424,25 +424,25 @@ static void CompletePoint(const point_proj_t P, point_full_proj_t R)
 }
 
 
-void CompleteMPoint(const f2elm_t A, point_proj_t P, point_full_proj_t R)
+void CompleteMPoint(const f2elm_t A, const f2elm_t PX, const f2elm_t PZ, point_full_proj_t R)
 { // Given an xz-only representation on a montgomery curve, compute its affine representation
     f2elm_t zero = {0}, one = {0}, xz, yz, s2, r2, invz, temp0, temp1;
 
     fpcopy((digit_t*)&Montgomery_one, one[0]);    
-    if (memcmp(P->Z[0], zero, NBITS_TO_NBYTES(NBITS_FIELD)) != 0 || memcmp(P->Z[1], zero, NBITS_TO_NBYTES(NBITS_FIELD)) != 0) {
-        fp2mul_mont(P->X, P->Z, xz);       // xz = x*z;
-        fpsub(P->X[0], P->Z[1], temp0[0]);
-        fpadd(P->X[1], P->Z[0], temp0[1]);
-        fpadd(P->X[0], P->Z[1], temp1[0]);
-        fpsub(P->X[1], P->Z[0], temp1[1]);        
+    if (memcmp(PZ[0], zero, NBITS_TO_NBYTES(NBITS_FIELD)) != 0 || memcmp(PZ[1], zero, NBITS_TO_NBYTES(NBITS_FIELD)) != 0) {
+        fp2mul_mont(PX, PZ, xz);       // xz = x*z;
+        fpsub(PX[0], PZ[1], temp0[0]);
+        fpadd(PX[1], PZ[0], temp0[1]);
+        fpadd(PX[0], PZ[1], temp1[0]);
+        fpsub(PX[1], PZ[0], temp1[1]);        
         fp2mul_mont(temp0, temp1, s2);     // s2 = (x + i*z)*(x - i*z);
         fp2mul_mont(A, xz, temp0);
         fp2add(temp0, s2, temp1);
         fp2mul_mont(xz, temp1, r2);        // r2 = xz*(A*xz + s2);
         sqrt_Fp2(r2, yz);
-        fp2copy(P->Z, invz);
+        fp2copy(PZ, invz);
         fp2inv_mont_bingcd(invz);        
-        fp2mul_mont(P->X, invz, R->X);
+        fp2mul_mont(PX, invz, R->X);
         fp2sqr_mont(invz, temp0);
         fp2mul_mont(yz, temp0, R->Y);      // R = EM![x*invz, yz*invz^2];
         fp2copy(one, R->Z);

src/fpx.c

@@ -1482,7 +1482,7 @@ void recover_os(const f2elm_t X1, const f2elm_t Z1, const f2elm_t X2, const f2el
 
 int mod(int a, unsigned int b)
 {
-    unsigned int r; 
+    int r; 
     if (b == 0) return 0; // avoid invalid operation
     r = a % b;
     while (r < 0) r += b;