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Fix various possible uses of uninitialised variables

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Patch from OpenSUSE, slightly adapted for 93u+m. Source:
https://build.opensuse.org/package/view_file/shells/ksh/ksh93-uninitialized.dif
This commit is contained in:
Martijn Dekker 2021-01-28 04:54:41 +00:00
parent c52cb93999
commit 288b6c6517
15 changed files with 39 additions and 32 deletions
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16
src/cmd/ksh93/sh/xec.c
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@ -1426,7 +1426,7 @@ int sh_exec(register const Shnode_t *t, int flags)
Namval_t node;
#endif /* SHOPT_NAMESPACE */
struct Namref nr;
long mode;
long mode = 0;
register struct slnod *slp;
if(!np->nvalue.ip)
{
@ -1771,8 +1771,8 @@ int sh_exec(register const Shnode_t *t, int flags)
* don't create a new process, just
* save and restore io-streams
*/
pid_t pid;
int jmpval, waitall;
pid_t pid = 0;
int jmpval, waitall = 0;
int simple = (t->fork.forktre->tre.tretyp&COMMSK)==TCOM;
struct checkpt *buffp = (struct checkpt*)stkalloc(shp->stk,sizeof(struct checkpt));
if(shp->subshell)
@ -2162,7 +2162,7 @@ int sh_exec(register const Shnode_t *t, int flags)
Shnode_t *tt = t->wh.whtre;
#if SHOPT_FILESCAN
Sfio_t *iop=0;
int savein;
int savein=-1;
#endif /*SHOPT_FILESCAN*/
#if SHOPT_OPTIMIZE
int jmpval = ((struct checkpt*)shp->jmplist)->mode;
@ -2579,7 +2579,7 @@ int sh_exec(register const Shnode_t *t, int flags)
else
{
register int traceon=0;
register char *right;
register char *right = 0;
register char *trap;
char *argv[6];
n = type>>TSHIFT;
@ -2613,7 +2613,7 @@ int sh_exec(register const Shnode_t *t, int flags)
}
else if(type&TBINARY)
{
char *op;
char *op = 0;
int pattern = 0;
if(trap || traceon)
op = (char*)(shtab_testops+(n&037)-1)->sh_name;
@ -3277,11 +3277,11 @@ static void sh_funct(Shell_t *shp,Namval_t *np,int argn, char *argv[],struct arg
int sh_fun(Namval_t *np, Namval_t *nq, char *argv[])
{
Shell_t *shp = sh_getinterp();
register int offset;
register int offset = 0;
register char *base;
Namval_t node;
struct Namref nr;
long mode;
long mode = 0;
char *prefix = shp->prefix;
int n=0;
char *av[3];