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LibC: Add setenv().
If I'm understanding the standard C library correctly, setenv() copies while putenv() does not. That's really confusing and putenv() basically sucks. To know which environment variables to free on replacement and which ones to leave alone, we keep track of the ones malloced by setenv in a side table. This patch also moves Shell to using setenv() instead of putenv(). Fixes #29.
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3 changed files with 27 additions and 10 deletions
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@ -18,6 +18,7 @@ void* realloc(void* ptr, size_t);
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char* getenv(const char* name);
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int putenv(char*);
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int unsetenv(const char*);
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int setenv(const char* name, const char* value, int overwrite);
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int atoi(const char*);
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long atol(const char*);
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long long atoll(const char*);
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