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Diffstat (limited to 'FAQ.in')
| -rw-r--r-- | FAQ.in | 13 |
1 files changed, 13 insertions, 0 deletions
@@ -1326,6 +1326,19 @@ Your program should check at runtime whether the function works, and implement a fallback. Note that Autoconf cannot detect unimplemented functions in other systems' C libraries, so you need to do this anyway. +?? My program segfaults when I call fclose() on the FILE* returned + from setmntent(). Is this a glibc bug? + +{GK} No. Don't do this. Use endmntent(), that's what it's for. + +In general, you should use the correct deallocation routine. For instance, +if you open a file using fopen(), you should deallocate the FILE * using +fclose(), not free(), even though the FILE * is also a pointer. + +In the case of setmntent(), it may appear to work in most cases, but it +won't always work. Unfortunately, for compatibility reasons, we can't +change the return type of setmntent() to something other than FILE *. + ? Miscellaneous |