Tested PPC32 with TFM_PPC32. Fixed warning with possible uninitialized use of sc0, sc1 and sc2.

wolfcrypt/src/fp_sqr_comba_12.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR12
 void fp_sqr_comba12(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[24], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[24], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word tt;
 #endif

wolfcrypt/src/fp_sqr_comba_17.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR17
 void fp_sqr_comba17(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[34], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[34], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word tt;
 #endif

wolfcrypt/src/fp_sqr_comba_20.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR20
 void fp_sqr_comba20(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[40], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[40], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word   tt;   
 #endif   

wolfcrypt/src/fp_sqr_comba_24.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR24
 void fp_sqr_comba24(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[48], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[48], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word   tt;   
 #endif   

wolfcrypt/src/fp_sqr_comba_28.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR28
 void fp_sqr_comba28(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[56], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[56], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word   tt;   
 #endif   

wolfcrypt/src/fp_sqr_comba_32.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR32
 void fp_sqr_comba32(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[64], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[64], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word   tt;   
 #endif   

wolfcrypt/src/fp_sqr_comba_48.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR48
 void fp_sqr_comba48(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[96], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[96], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word   tt;   
 #endif   

wolfcrypt/src/fp_sqr_comba_6.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR6
 void fp_sqr_comba6(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[12], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[12], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word tt;
 #endif

wolfcrypt/src/fp_sqr_comba_64.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR64
 void fp_sqr_comba64(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[128], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[128], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word   tt;   
 #endif   

wolfcrypt/src/fp_sqr_comba_7.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR7
 void fp_sqr_comba7(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[14], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[14], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word tt;
 #endif

wolfcrypt/src/fp_sqr_comba_8.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR8
 void fp_sqr_comba8(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[16], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[16], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word   tt;   
 #endif   

wolfcrypt/src/fp_sqr_comba_9.i

@@ -24,7 +24,7 @@
 #ifdef TFM_SQR9
 void fp_sqr_comba9(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[18], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[18], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word tt;
 #endif

wolfcrypt/src/fp_sqr_comba_small_set.i

@@ -24,7 +24,7 @@
 #if defined(TFM_SMALL_SET)
 void fp_sqr_comba_small(fp_int *A, fp_int *B)
 {
-   fp_digit *a, b[32], c0, c1, c2, sc0, sc1, sc2;
+   fp_digit *a, b[32], c0, c1, c2, sc0 = 0, sc1 = 0, sc2 = 0;
 #ifdef TFM_ISO
    fp_word   tt;   
 #endif