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50049: care with signed characters

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Some signed-to-unsigned casts needed for a couple of cases of pointers
used as indices.
This commit is contained in:
Peter Stephenson 2022-04-12 14:10:08 +01:00
parent 09ad15b986
commit c5a891a29d
3 changed files with 8 additions and 2 deletions
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2
Src/exec.c
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@ -561,7 +561,7 @@ zexecve(char *pth, char **argv, char **newenvp)
isbinary = 1;
hasletter = 0;
for (ptr = execvebuf; ptr < ptr2; ptr++) {
if (islower(*ptr) || *ptr == '$' || *ptr == '`')
if (islower(STOUC(*ptr)) || *ptr == '$' || *ptr == '`')
hasletter = 1;
if (hasletter && *ptr == '\n') {
isbinary = 0;