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apps/nshlib: I was able to cause an assertion with some typos in an testing the 'fi' command. Not an important thing, but this will protect against the assertion.

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This commit is contained in:
Gregory Nutt 2018-08-11 09:30:53 -06:00
parent 5cfe9c2787
commit ff192a4a58
1 changed files with 6 additions and 6 deletions
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12
nshlib/nsh_parse.c
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@ -1777,7 +1777,7 @@ static int nsh_loop(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
bool inverted = false;
int ret;
if (cmd)
if (cmd != NULL)
{
/* Check if the command is preceded by "while" or "until" */
@ -1791,7 +1791,7 @@ static int nsh_loop(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
/* Get the cmd following the "while" or "until" */
*ppcmd = nsh_argument(vtbl, saveptr, memlist);
if (!*ppcmd)
if (*ppcmd == NULL || **ppcmd == '\0')
{
nsh_output(vtbl, g_fmtarginvalid, cmd);
goto errout;
@ -1806,7 +1806,7 @@ static int nsh_loop(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
/* Get the next cmd */
*ppcmd = nsh_argument(vtbl, saveptr, memlist);
if (!*ppcmd)
if (*ppcmd == NULL || **ppcmd == '\0')
{
nsh_output(vtbl, g_fmtarginvalid, cmd);
goto errout;
@ -1983,7 +1983,7 @@ static int nsh_itef(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
bool disabled;
bool inverted = false;
if (cmd)
if (cmd != NULL)
{
/* Check if the command is preceded by "if" */
@ -1992,7 +1992,7 @@ static int nsh_itef(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
/* Get the cmd following the if */
*ppcmd = nsh_argument(vtbl, saveptr, memlist);
if (!*ppcmd)
if (*ppcmd == NULL || **ppcmd == '\0')
{
nsh_output(vtbl, g_fmtarginvalid, "if");
goto errout;
@ -2007,7 +2007,7 @@ static int nsh_itef(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
/* Get the next cmd */
*ppcmd = nsh_argument(vtbl, saveptr, memlist);
if (!*ppcmd)
if (*ppcmd == NULL || **ppcmd == '\0')
{
nsh_output(vtbl, g_fmtarginvalid, "if");
goto errout;