diff options
Diffstat (limited to 'Src/subst.c')
| -rw-r--r-- | Src/subst.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/Src/subst.c b/Src/subst.c index 974a8456d..a4df2567f 100644 --- a/Src/subst.c +++ b/Src/subst.c @@ -3707,6 +3707,11 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int pf_flags) char *y; x = val; + if (!x) { + /* Shouldn't have got here with a NULL string. */ + DPUTS(1, "value is NULL in paramsubst"); + return NULL; + } if (prenum || postnum) x = dopadding(x, prenum, postnum, preone, postone, premul, postmul @@ -4021,7 +4026,10 @@ modify(char **str, char **ptr) all = tmp; t = e; } - *str = all; + if (!all) + *str = dupstring(""); + else + *str = all; } else { switch (c) { |