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