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If the size of int is different from IGRAPH_INTEGER_SIZE, the integer size
passed to these vararg arguments is different from the assumed one,
leading to undefined behavior.
Submitted upstream: https://github.com/igraph/igraph/pull/2423
diff -ur a/examples/simple/igraph_union.c b/examples/simple/igraph_union.c
--- a/examples/simple/igraph_union.c
+++ b/examples/simple/igraph_union.c
@@ -103,7 +103,7 @@
igraph_vector_ptr_init(&glist, 10);
for (i = 0; i < igraph_vector_ptr_size(&glist); i++) {
VECTOR(glist)[i] = calloc(1, sizeof(igraph_t));
- igraph_vector_int_init_int_end(&v, -1, i, i + 1, 1, 0, -1);
+ igraph_vector_int_init_int_end(&v, -1, (int) i, (int) i + 1, 1, 0, -1);
igraph_create(VECTOR(glist)[i], &v, 0, IGRAPH_DIRECTED);
igraph_vector_int_destroy(&v);
}
@@ -123,7 +123,7 @@
igraph_vector_ptr_init(&glist, 10);
for (i = 0; i < igraph_vector_ptr_size(&glist); i++) {
VECTOR(glist)[i] = calloc(1, sizeof(igraph_t));
- igraph_vector_int_init_int_end(&v, -1, i, i + 1, 1, 0, -1);
+ igraph_vector_int_init_int_end(&v, -1, (int) i, (int) i + 1, 1, 0, -1);
igraph_create(VECTOR(glist)[i], &v, 0, IGRAPH_UNDIRECTED);
igraph_vector_int_destroy(&v);
}
diff -ur a/src/core/matrix.pmt b/src/core/matrix.pmt
--- a/src/core/matrix.pmt
+++ b/src/core/matrix.pmt
@@ -1863,7 +1863,7 @@
#ifdef FPRINTFUNC_ALIGNED
FPRINTFUNC_ALIGNED(file, VECTOR(column_width)[j], MATRIX(*m, i, j));
#else
- fprintf(file, format, VECTOR(column_width)[j], MATRIX(*m, i, j));
+ fprintf(file, format, (int) VECTOR(column_width)[j], MATRIX(*m, i, j));
#endif
}
fprintf(file, "\n");
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