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dmd.safe

Checks whether member access or array casting is allowed in @safe code.

Specification Function Safety

Authors:
Walter Bright
License:
Boost License 1.0

Source safe.d

Documentation https://dlang.org/phobos/dmd_safe.html

Coverage https://codecov.io/gh/dlang/dmd/src/master/src/dmd/safe.d

bool checkUnsafeAccess(Scope* sc, Expression e, bool readonly, bool printmsg);
Check for unsafe access in @safe code:
  1. read overlapped pointers
  2. write misaligned pointers
  3. write overlapped storage classes
Print error if unsafe.
Parameters:
Scope* sc scope
Expression e expression to check
bool readonly if access is read-only
bool printmsg print error message if true
Returns:
true if error
bool isSafeCast(Expression e, Type tfrom, Type tto);
Determine if it is @safe to cast e from tfrom to tto.
Parameters:
Expression e expression to be cast
Type tfrom type of e
Type tto type to cast e to
Returns:
true if @safe
bool checkUnsafeDotExp(Scope* sc, Expression e, Identifier id, int flag);
Check for unsafe use of .ptr or .funcptr
Parameters:
Scope* sc context
Expression e expression for error messages
Identifier id ptr or funcptr
int flag DotExpFlag
Returns:
true if error