| ID |
Summary |
State |
Reported In Release |
Target Release |
Workaround |
Release Notes |
| CODEGEN-1976 |
Value of __cplusplus is wrong |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.3 |
If possible, use the -ps or --strict_ansi options. This mode will use the strict definition of __cplusplus, which is 199711L. |
Our parser mimicked G++ behavior for the value of this macro in relaxed ANSI mode. This reproduced a bug in G++ versions v.4.7 and v.4.3 that has since been fixed. |
| CODEGEN-1703 |
Designated initializer plus struct hack hangs compiler |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.3 |
Avoiding using string constants to initialize objects with flexible array members. Instead, use a brace-initialized array. For example:
struct { int a; char b[]; } mystruct = {0, {'h', 'e', 'l', 'l', 'o'} }; |
Fixed a compiler hang caused by initializing flexible array members with string constants.
struct {int a; char b[]; } mystruct = {0, "hello"} /* Would cause the compiler to hang and/or crash */ |
| CODEGEN-1658 |
SPLOOP Missed Stall Exception with Debugger |
Fixed |
C6000_8.1.1 |
C6000_8.1.3 |
None. |
A hardware bug on C6000 prevents the debugger from working correctly within certain instruction sequences in an SPLOOP. |
| CODEGEN-1649 |
Warning "INLINE recursion limit exceeded" during RTS build |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.2 |
None, for the automatic library builds. Elsewhere, one can use the hidden --inline_recursion_limit option to increase the limit above the default 10. |
The compiler may emit the warning "INLINE recursion limit exceeded," but there is no way to suppress the warning, and it really isn't useful for the typical compiler user. These changes remove the warning. |
| CODEGEN-1640 |
MISRA 19.1 misreported: #include statements should only be preceded by other preprocessor directives |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.3 |
No practical workaround |
|
| CODEGEN-1634 |
MISRA 7.1 misreported: octal tokens in token paste |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.3 |
No practical workaround |
|
| CODEGEN-1632 |
MISRA 15.2 misreported: switch clause unconditional break |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.3 |
Put an explicit break at the end of the compound statement |
|
| CODEGEN-1441 |
Compiler generates software pipelined loop that has multiple assignment code, and is not interrupt safe |
Fixed |
C6000_8.1.1 |
C6000_8.1.2 |
If the specific code sequence causing the issue can be located in the assembly source, then a user may insert a DINT instruction in front of the multi-cycle instruction and a RINT instruction after the last delay slot of the multi-cycle instruction. |
The compiler will mistakenly define and use a register that is defined
by a preceeding multi-cycle instruction while the definition of the value
created by the multi-cycle instruction is still in the process of being
written to that register. If an interrupt occurs between the delay slot
definition of that register and the delay slot use of that register, then
an incorrect value will arrive in the register for the delay slot use of
the register.
For example,
MPYLI .M1X A4,B6,A5:A4
MVK .S1 2380,A3
|| ADD .L1X A3,B8,A5
ADD .L1 A3,A5,A9
LDHU .D1T1 *A9,A5
NOP 1
...
In the above code, if an interrupt occurs in the delay slots of the
MPYLI instruction, between the definition of A5 and the subsequent use
of A5, then the value in A5 used by the second ADD instruction will be
the value that was written to A5 by the MPYLI instruction instead of the
first ADD instruction. |
| CODEGEN-1429 |
Software pipelined loop generates different results than loop not pipelined |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.2 |
Avoid unsigned expressions in subscripts or in computing subscripts, or compile with -o1 or -o0. |
|
| CODEGEN-1333 |
Structure assignment causes compiler to fail with INTERNAL ERROR: Decomposition error |
Fixed |
C6000_8.1.0 |
C6000_8.1.2 |
Replace struct assignments involving packed structures with a memcpy() call to copy the contents of the RHS of the struct assign to the LHS. |
|
| SDSCM00052734 |
Internal error in trampoline generation when user defines data symbol named "signal" |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.2 |
It is a user error to have two different objects in the system with the same name. Rename one of the objects. |
|
| CODEGEN-1272 |
Compiling with optimization level o2 and higher triggers an exception |
Fixed |
C6000_8.1.0 |
C6000_8.1.3 |
Compile affected C/C++ source file with "--disable:pc" compiler option |
In some cases where the compiler generates a non-SPLOOP software pipelined loop which has a large iteration interval, the compiler may determine that it is OK to speculatively execute a load instruction when it shouldn't. This can lead to the compiler generating code which, when executed, will try to access an illegal data address with a load instruction whose address operand is pointing to an illegal address. The result at run time is a hardware exception. |
| SDSCM00052864 |
struct field in register is not sign-extended to 32 bits before 32-bit compare |
Fixed |
C6000_8.1.0 |
C6000_8.1.2 |
Declare the local struct as volatile |
The compiler can place small structs in registers for fast access. In this case, the compiler fails to sign-extend a 16-bit struct member to 32-bits before a 32-bit comparison. This can happen for structs 32 bits or less, with any integer field 16 bits or less. |
| SDSCM00052889 |
uint16_t value not truncated as it ought to be in if test using -O2 |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.1 |
|
|
| SDSCM00052887 |
Compiler produces incorrect code for C674x at -O2 |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.1 |
Place #pragma UNROLL(1) immediately before the loop |
|
| SDSCM00052833 |
Linker INTERNAL ERROR with object files with DWARF information compiled by IAR compiler |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.1 |
Add option --compress_dwarf=off |
|
| SDSCM00052805 |
Decomposition error on while(*ptr++) where ptr points to volatile |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.1 |
No workaround. |
|
| SDSCM00052721 |
lnk6x automatic RTS selection does not work when thread-safe version of RTS is needed |
Fixed |
C6000_8.1.0 |
C6000_8.1.1 |
Explicitly specify the thread-safe version of the RTS library that is to be included in the link instead of using libc.a on the link command line or in the linker command file. |
|
| SDSCM00052699 |
Compiler discards write to a volatile local struct member |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.1 |
No workaround. |
|
| SDSCM00052529 |
Optimizer assumes enum variable can only have value of enumeration constants |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.1 |
Don't make enumerated types with constants only for 0 and 1 if other values may be used. Either add a third value, or use values different than 0 and 1, or avoid using values that aren't the enumeration constants. |
|
| SDSCM00052339 |
demangler --output option does not work at all |
Fixed |
C6000_8.1.0 |
C6000_8.1.0 |
armdem file.asm > file.dis |
|
| SDSCM00052301 |
Linker crashes when --ecc:ecc_error is used |
Fixed |
C6000_8.1.0 |
C6000_8.1.0 |
None. |
|
| SDSCM00052292 |
Certain cases of array-typed struct member followed by non-array member cause incorrect code |
Fixed |
C6000_8.1.0 |
C6000_8.1.0 |
Put all array-typed members of the struct at the end. The problem is with array members that appear immediately before non-array members. |
|
| SDSCM00052265 |
Flexible array with initializer not handle correctly |
Fixed |
C6000_8.1.0 |
C6000_8.1.0 |
None. |
|
| SDSCM00051485 |
Incorrect reordering of nested op= with ++ |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.2 |
Don't embed "X op= Y++" under another assignment operator. |
An expression like "a += b += c++" will produce the wrong answer. The problem is specific to sub-expressions of the form "X op= Y++" that occur under another assignment operator. |
| SDSCM00050005 |
Compiler mistakenly issues MISRA diagnostic 12.9 for a float point type |
Fixed |
C6000_8.1.0B1 |
C6000_8.1.2 |
|
|
