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| author | Robin Watts <robin.watts@artifex.com> | 2012-03-12 13:11:03 +0000 |
|---|---|---|
| committer | Robin Watts <robin.watts@artifex.com> | 2012-03-12 13:29:05 +0000 |
| commit | 65ca742ba4aabda2768ba4423eeaf06d5d46c76e (patch) | |
| tree | beec4f1df024e5b434daf0030a3daa5eb3c5ce16 /pdf | |
| parent | cfe5b48198b2f56049fcebad5c422c61fea9e97f (diff) | |
| download | mupdf-65ca742ba4aabda2768ba4423eeaf06d5d46c76e.tar.xz | |
Fix bitshifting by a negative amount in PS functions
When bitshifting by a negative amount, we should shift right; thanks
to Sebras' work in this area, I spotted that we are attempting to
shift right by a negative number.
Diffstat (limited to 'pdf')
| -rw-r--r-- | pdf/pdf_function.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/pdf/pdf_function.c b/pdf/pdf_function.c index a6941ca1..b02ae3c5 100644 --- a/pdf/pdf_function.c +++ b/pdf/pdf_function.c @@ -369,7 +369,7 @@ ps_run(fz_context *ctx, psobj *code, ps_stack *st, int pc) if (i2 > 0 && i2 < 8 * sizeof (i2)) ps_push_int(st, i1 << i2); else if (i2 < 0 && i2 > -8 * sizeof (i2)) - ps_push_int(st, (int)((unsigned int)i1 >> i2)); + ps_push_int(st, (int)((unsigned int)i1 >> -i2)); else ps_push_int(st, i1); break; |