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ed: Avoid dangling pointer in getrhs() - sbase - suckless unix tools |
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git clone git://git.suckless.org/sbase |
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--- |
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commit aacfa18b79f459b8419f424079d50fc5bc263791 |
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parent b089261c3a7bdc6fb1efd84b7f097667d9f1fced |
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Author: Roberto E. Vargas Caballero <[email protected]> |
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Date: Wed, 29 Nov 2023 15:47:51 +0100 |
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ed: Avoid dangling pointer in getrhs() |
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If the string r.str is freed but error() is called then |
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next call will see a pointer that maybe it will try to free |
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because the call to error unwind the frame stack. |
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Diffstat: |
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M ed.c | 2 +- |
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1 file changed, 1 insertion(+), 1 deletion(-) |
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--- |
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diff --git a/ed.c b/ed.c |
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@@ -1102,9 +1102,9 @@ getrhs(int delim) |
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} |
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if (!strcmp("%", s.str)) { |
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- free(s.str); |
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if (!rhs) |
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error("no previous substitution"); |
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+ free(s.str); |
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} else { |
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free(rhs); |
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rhs = s.str; |
