the test case is here:

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#!/bin/sh
set -e
mkdir /tmp/tst-$$
cd /tmp/tst-$$

mkdir '*'
touch '*/x'

cat > a.c <<'EOF'
#include <glob.h>
#include <stdio.h>

int main() {
    glob_t pglob;
    puts(glob("\\*/*", 0, 0, &pglob) ? "failure" : "works");
    return 0;
}
EOF

gcc -Wall -W -o a a.c && ./a

cd /tmp
rm -rf tst-$$
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