| // SPDX-License-Identifier: GPL-2.0-only |
| /// Correct the size argument to alloc functions |
| /// |
| //# This makes an effort to find cases where the argument to sizeof is wrong |
| //# in memory allocation functions by checking the type of the allocated memory |
| //# when it is a double pointer and ensuring the sizeof argument takes a pointer |
| //# to the the memory being allocated. There are false positives in cases the |
| //# sizeof argument is not used in constructing the return value. The result |
| //# may need some reformatting. |
| // |
| // Confidence: Moderate |
| // Copyright: (C) 2014 Himangi Saraogi. |
| // Comments: |
| // Options: |
| |
| virtual patch |
| virtual context |
| virtual org |
| virtual report |
| |
| //---------------------------------------------------------- |
| // For context mode |
| //---------------------------------------------------------- |
| |
| @depends on context disable sizeof_type_expr@ |
| type T; |
| T **x; |
| @@ |
| |
| x = |
| <+...sizeof( |
| * T |
| )...+> |
| |
| //---------------------------------------------------------- |
| // For patch mode |
| //---------------------------------------------------------- |
| |
| @depends on patch disable sizeof_type_expr@ |
| type T; |
| T **x; |
| @@ |
| |
| x = |
| <+...sizeof( |
| - T |
| + *x |
| )...+> |
| |
| //---------------------------------------------------------- |
| // For org and report mode |
| //---------------------------------------------------------- |
| |
| @r depends on (org || report) disable sizeof_type_expr@ |
| type T; |
| T **x; |
| position p; |
| @@ |
| |
| x = |
| <+...sizeof( |
| T@p |
| )...+> |
| |
| @script:python depends on org@ |
| p << r.p; |
| @@ |
| |
| coccilib.org.print_todo(p[0], "WARNING sizeof argument should be pointer type, not structure type") |
| |
| @script:python depends on report@ |
| p << r.p; |
| @@ |
| |
| msg="WARNING: Use correct pointer type argument for sizeof" |
| coccilib.report.print_report(p[0], msg) |
| |
