HP aC++/HP C Programmer's Guide (B3901-90036; A.06.26; September 2011)

NOTE: The +check option is only supported on Integrity servers.
+check=all
The +check=all option enables all runtime checks provided by the compiler, except
for +check=truncate, +check=lock, and +check=thread, which must be explicitly
specified to enable them. It overrides any +check=xxx options that appear earlier on
the command line. The +check=all option is currently equivalent to the following
options:
+check=bounds:array +check=globals +check=malloc
+check=stack:variables +check=uninit -z
The -z option, which is part of +check=all, can be overridden by an explicit -Z
option.
+check=none
The +check=none option turns off all runtime checking options. It disables any
+check=xxxoptions that appear earlier on the command line.
+check=bounds
The +check=bounds option enables checks for out-of-bounds references to array
variables or to buffers through pointer access. The check is performed for each reference
to an array element or pointer access. If a check fails, an error message is emitted and
the program is aborted.
The +check=bounds option applies only to local and global array variables. It also
applies to references to array fields of structs. It does not apply to arrays allocated
dynamically using malloc or alloca.
You can specify one of the following +check=bounds suboptions:
• array - Enables check for out-of-bounds references to array variables.
• pointer - Enables check for out-of-bounds references to buffers through pointer access.
The buffer could be a heap object, global variable, or local variable. This suboption
also checks out-of-bounds access through common libc function calls such as
strcpy, strcat, memset, and so on. The check can create significant run-time
performance overhead. See +check=uninit and +check=malloc for their
interaction with this option.
• all - Enables out-of-bounds checks for both arrays and pointers. This is equal to
+check=bounds:array +check=bounds:pointer.
• none - Disables out-of-bounds checks.
+check=bounds (with no suboption) is equal to +check=bounds:array. This may
change in the future to also include +check=bounds:pointer.
92 Command-Line Options