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| author | archie <archie@FreeBSD.org> | 2000-01-26 22:10:56 +0000 |
|---|---|---|
| committer | archie <archie@FreeBSD.org> | 2000-01-26 22:10:56 +0000 |
| commit | af563a21f8a15eb3b2c36a726ec48aac4ec87496 (patch) | |
| tree | f3ab65df67dcbdb92b08a01af6c24b3c0ea01770 /lib/libc/stdlib | |
| parent | 860c8411e16b55730d5f2a310ff816581da1ce7e (diff) | |
| download | FreeBSD-src-af563a21f8a15eb3b2c36a726ec48aac4ec87496.zip FreeBSD-src-af563a21f8a15eb3b2c36a726ec48aac4ec87496.tar.gz | |
Document the memory leak that is inherent in FreeBSD's semantics
for getenv()/putenv().
PR: 10341 5604
Diffstat (limited to 'lib/libc/stdlib')
| -rw-r--r-- | lib/libc/stdlib/getenv.3 | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/libc/stdlib/getenv.3 b/lib/libc/stdlib/getenv.3 index 3347bda..aff0d7d 100644 --- a/lib/libc/stdlib/getenv.3 +++ b/lib/libc/stdlib/getenv.3 @@ -139,6 +139,21 @@ The .Fn getenv function conforms to .St -ansiC . +.Sh BUGS +Successive calls to +.Fn setenv +or +.Fn putenv +assigning a differently sized +.Ar value +to the same +.Ar name +will result in a memory leak. The FreeBSD semantics for these functions +(namely, that the contents of +.Ar value +are copied and that old values remain accessible indefinitely) make this +bug unavoidable. Future versions may eliminate one or both of these +semantic guarantees in order to fix the bug. .Sh HISTORY The functions .Fn setenv |
