16 lines
455 B
Diff
16 lines
455 B
Diff
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diff --git a/tools/gif2tiff.c b/tools/gif2tiff.c
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index 375b152..2731273 100644
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--- a/tools/gif2tiff.c
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+++ b/tools/gif2tiff.c
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@@ -402,6 +402,10 @@ process(register int code, unsigned char** fill)
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}
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if (oldcode == -1) {
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+ if (code >= clear) {
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+ fprintf(stderr, "bad input: code=%d is larger than clear=%d\n",code, clear);
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+ return 0;
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+ }
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*(*fill)++ = suffix[code];
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firstchar = oldcode = code;
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return 1;
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