diff options
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/stdio/mktemp.3 | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/libc/stdio/mktemp.3 b/lib/libc/stdio/mktemp.3 index 361bebf..a9d3146 100644 --- a/lib/libc/stdio/mktemp.3 +++ b/lib/libc/stdio/mktemp.3 @@ -124,6 +124,28 @@ may also set to any value specified by the .Xr open 2 function. +.Sh NOTES +A common problem that results in a core dump is that the programmer +passes in a read-only string to +.Fn mktemp +or +.Fn mkstemp . +This is common with programs that were developed before +.St -ansiC +compilers were common.. +For example, calling +.Fn mkstemp +with an argument of +.Qq /tmp/tempfile.XXXXXX +will result in a core dump due to +.Fn mkstemp +attempting to modify the string constant that was given. +If the program in question makes heavy use of that type +of function call, you do have the option of compiling the program +so that it will store string constants in a writable segment of memory. +See +.Xr gcc 1 +for more information. .Sh SEE ALSO .Xr chmod 2 , .Xr getpid 2 , |
