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don't mutate getenv() result

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svn: r3133
This commit is contained in:
Matthew Flatt 2006-05-30 20:13:54 +00:00
parent 185da3d90d
commit 8c33ccb989
1 changed files with 15 additions and 1 deletions
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16
src/mzscheme/dynsrc/ustart.c
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@ -135,6 +135,20 @@ static char *string_append(char *s1, char *s2)
return s; return s;
} }
static char *copy_string(char *s1)
{
int l1;
char *s;
l1 = strlen(s1);
s = (char *)malloc(l1 + 1);
memcpy(s, s1, l1 + 1);
return s;
}
static char *do_path_append(char *s1, int l1, char *s2) static char *do_path_append(char *s1, int l1, char *s2)
{ {
int l2; int l2;
@ -224,7 +238,7 @@ int main(int argc, char **argv)
me = path_append(getcwd(NULL, 0), me); me = path_append(getcwd(NULL, 0), me);
} else { } else {
/* We have to find the executable by searching PATH: */ /* We have to find the executable by searching PATH: */
char *path = getenv("PATH"), *p, *m; char *path = copy_string(getenv("PATH")), *p, *m;
int more; int more;
if (!path) { if (!path) {