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Code Issues Releases Wiki Activity

name.c: fix possible crash in attstore()

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From OpenSUSE:
https://build.opensuse.org/package/view_file/shells/ksh/ksh93-env.dif
(the init.c fix there is already done differently in 3654ee73)

src/cmd/ksh93/sh/name.c: attstore():
- Check nv_mapchar() returns a non-null pointer before using it.
This commit is contained in:
Martijn Dekker 2021-01-28 04:01:49 +00:00
parent cc4927529b
commit 3ad4307054
1 changed files with 1 additions and 1 deletions
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2
src/cmd/ksh93/sh/name.c
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@ -2113,7 +2113,7 @@ static void attstore(register Namval_t *np, void *data)
if((flag&(NV_UTOL|NV_LTOU|NV_INTEGER)) == (NV_UTOL|NV_LTOU)) if((flag&(NV_UTOL|NV_LTOU|NV_INTEGER)) == (NV_UTOL|NV_LTOU))
{ {
data = (void*)nv_mapchar(np,0); data = (void*)nv_mapchar(np,0);
if(strcmp(data,e_tolower) && strcmp(data,e_toupper)) if(data && strcmp(data,e_tolower) && strcmp(data,e_toupper))
return; return;
} }
flag &= (NV_RDONLY|NV_UTOL|NV_LTOU|NV_RJUST|NV_LJUST|NV_ZFILL|NV_INTEGER); flag &= (NV_RDONLY|NV_UTOL|NV_LTOU|NV_RJUST|NV_LJUST|NV_ZFILL|NV_INTEGER);