74 lines
1.4 KiB
Diff
74 lines
1.4 KiB
Diff
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--- a/src/fft4g.c
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+++ b/src/fft4g.c
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@@ -322,6 +322,9 @@
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void cdft(int n, int isgn, double *a, int *ip, double *w)
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{
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+ if (n > FFT4G_MAX_SIZE)
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+ return;
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+
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if (n > (ip[0] << 2)) {
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makewt(n >> 2, ip, w);
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}
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@@ -344,6 +347,9 @@
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int nw, nc;
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double xi;
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+ if (n > FFT4G_MAX_SIZE)
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+ return;
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+
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nw = ip[0];
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if (n > (nw << 2)) {
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nw = n >> 2;
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@@ -384,6 +390,9 @@
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int j, nw, nc;
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double xr;
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+ if (n > FFT4G_MAX_SIZE)
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+ return;
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+
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nw = ip[0];
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if (n > (nw << 2)) {
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nw = n >> 2;
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@@ -435,6 +444,9 @@
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int j, nw, nc;
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double xr;
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+ if (n > FFT4G_MAX_SIZE)
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+ return;
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+
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nw = ip[0];
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if (n > (nw << 2)) {
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nw = n >> 2;
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@@ -486,6 +498,9 @@
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int j, k, l, m, mh, nw, nc;
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double xr, xi, yr, yi;
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+ if (n > FFT4G_MAX_SIZE)
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+ return;
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+
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nw = ip[0];
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if (n > (nw << 3)) {
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nw = n >> 3;
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@@ -576,6 +591,9 @@
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int j, k, l, m, mh, nw, nc;
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double xr, xi, yr, yi;
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+ if (n > FFT4G_MAX_SIZE)
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+ return;
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+
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nw = ip[0];
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if (n > (nw << 3)) {
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nw = n >> 3;
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--- a/src/fft4g.h
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+++ b/src/fft4g.h
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@@ -13,6 +13,8 @@
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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+#define FFT4G_MAX_SIZE 262144
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+
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void lsx_cdft(int, int, double *, int *, double *);
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void lsx_rdft(int, int, double *, int *, double *);
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void lsx_ddct(int, int, double *, int *, double *);
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