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ash: fix a SEGV in ${#1}

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function                                             old     new   delta
varvalue                                             760     805     +45
evalvar                                              648     603     -45

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2014-12-29 00:04:18 +01:00
parent 8074a6ca4d
commit c76236fd7d
1 changed files with 9 additions and 9 deletions
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18
shell/ash.c
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@ -6746,6 +6746,14 @@ varvalue(char *name, int varflags, int flags, struct strlist *var_str_list)
len = strlen(p);
if (!(subtype == VSPLUS || subtype == VSLENGTH))
memtodest(p, len, syntax, quotes);
#if ENABLE_UNICODE_SUPPORT
if (subtype == VSLENGTH && len > 0) {
reinit_unicode_for_ash();
if (unicode_status == UNICODE_ON) {
len = unicode_strlen(p);
}
}
#endif
return len;
}
@ -6829,15 +6837,7 @@ evalvar(char *p, int flags, struct strlist *var_str_list)
varunset(p, var, 0, 0);
if (subtype == VSLENGTH) {
ssize_t n = varlen;
if (n > 0) {
reinit_unicode_for_ash();
if (unicode_status == UNICODE_ON) {
const char *val = lookupvar(var);
n = unicode_strlen(val);
}
}
cvtnum(n > 0 ? n : 0);
cvtnum(varlen > 0 ? varlen : 0);
goto record;
}