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");
tion>
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<div class='path'>path: <a href='/guix/log/?id=44dbd856b7e937df890314812c532eceb26bfefc'>root</a>/<a href='/guix/log/gnu?id=44dbd856b7e937df890314812c532eceb26bfefc'>gnu</a>/<a href='/guix/log/gnu/services?id=44dbd856b7e937df890314812c532eceb26bfefc'>services</a>/<a href='/guix/log/gnu/services/mcron.scm?id=44dbd856b7e937df890314812c532eceb26bfefc'>mcron.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/mcron.scm?id=44dbd856b7e937df890314812c532eceb26bfefc&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-01-06 16:31:54 +0100'>2020-01-06</span></td><td><a href='/guix/commit/gnu/services/mcron.scm?id=6a7c4636d4dec47eefa03c95da5a1315bd0e0413'>Adjust module autoloads.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-12-08 00:47:26 +0100'>2019-12-08</span></td><td><a href='/guix/commit/gnu/services/mcron.scm?id=e7d45693d979fdb88dc6eed2a67797c4f8c4b420'>services: mcron: Add description.</a><span class='msg-avail'>...</span></td><td>Robert Vollmert</td></tr>
<tr><td><span title='2019-06-15 18:15:23 +0200'>2019-06-15</span></td><td><a href='/guix/commit/gnu/services/mcron.scm?id=f3d797005374e5333c7596fe86b4a524ab1b9b11'>services: Remove unneeded imports that led to cycles.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-05-12 18:16:37 +0100'>2019-05-12</span></td><td><a href='/guix/commit/gnu/services/mcron.scm?id=f8cd07e8d8acf85fd6d08646a0719178895b5894'>services: mcron: Log to a file.</a><span class='msg-avail'>...</span></td><td>Christopher Baines</td></tr>
<tr><td><span title='2019-01-28 14:57:10 +0100'>2019-01-28</span></td><td><a href='/guix/commit/gnu/services/mcron.scm?id=0791437f972caa7e48de91ad5cb150a614f617c2'>gnu: Move most packages from guile.scm to new module.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2019-01-11 12:14:38 +0100'>2019-01-11</span></td><td><a href='/guix/commit/gnu/services/mcron.scm?id=84a2de36a10dc2ab80f86e16721cbd228c85279e'>services: Deprecate a few more service procedures.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-11-13 14:59:45 +0100'>2018-11-13</span></td><td><a href='/guix/commit/gnu/services/mcron.scm?id=190877748eeadff475dca822847fb3a5cc4467b9'>services: mcron: Fix typo in comment.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-07-13 00:08:55 +0200'>2018-07-13</span></td><td><a href='/guix/commit/gnu/services/mcron.scm?id=147c5aa5d4e3bd21ee4c4cae70dff8da0bcf94b7'>services: mcron: Add 'schedule' action.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-03-19 23:19:49 +0100'>2018-03-19</span></td><td><a href='/guix/commit/gnu/services/mcron.scm?id=cfbf6de18cc70d2e385feb5f61f9363f18e78ddf'>gnu: mcron: Update to 1.1 and deprecate "mcron2".</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-04-16 00:48:08 +0200'>2017-04-16</span></td><td><a href='/guix/commit/gnu/services/mcron.scm?id=3d3c56500843b5573ba6419db5e66075fb8ac8ef'>services: Add a default value to various service types.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>