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tFix memmove() invocation with src/dst being NULL - st - [fork] customized buil… |
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git clone git://src.adamsgaard.dk/st |
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--- |
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commit 56abffb4b67f235d20de30f29ba027ab34c171e3 |
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parent aff35af275cb82eb876630c9256298ea1d1b2b57 |
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Author: sin <[email protected]> |
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Date: Wed, 15 Apr 2015 09:43:06 +0100 |
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Fix memmove() invocation with src/dst being NULL |
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This fixes a segmentation fault on some systems. |
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Diffstat: |
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M st.c | 7 +++++-- |
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1 file changed, 5 insertions(+), 2 deletions(-) |
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--- |
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diff --git a/st.c b/st.c |
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t@@ -2788,8 +2788,11 @@ tresize(int col, int row) { |
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free(term.line[i]); |
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free(term.alt[i]); |
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} |
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- memmove(term.line, term.line + i, row * sizeof(Line)); |
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- memmove(term.alt, term.alt + i, row * sizeof(Line)); |
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+ /* ensure that both src and dst are not NULL */ |
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+ if (i > 0) { |
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+ memmove(term.line, term.line + i, row * sizeof(Line)); |
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+ memmove(term.alt, term.alt + i, row * sizeof(Line)); |
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+ } |
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for(i += row; i < term.row; i++) { |
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free(term.line[i]); |
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free(term.alt[i]); |
