Closed Defects in Release

ID Summary State Reported In Release Target Release Workaround Release Notes
CODEGEN-4638 When shift counts are higher than 32, compiler sometimes optimizes to an incorrect shift count Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS Turn off optimization by using optimization level off. Otherwise, avoid a left-shift by a constant as an operand of the listed operations. However, compiler optimizations could interfere with this. Try keeping the shift count in a global variable instead of as a literal, or computing the shift separately into a variable (a global or volatile local) and doing the |, +, etc, on the variable. Left shifts by 32 or more, as an operand of +, -, &, |, or ^, (eg, ((X<<56) | (Y<<48))) may produce incorrect results.
CODEGEN-4622 Builtin test __has_builtin incorrectly claims to support many __builtin functions Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS Do not use __has_builtin until it is fixed. MCU release 18.1.x.LTS added the __has_builtin feature to detect whether or not a particular builtin function was supported. However, this feature test mistakenly returned true for a great number of builtins that the TI compiler does not support.
CODEGEN-4605 Incompatible redeclaration error with -o4 when using anonymous unions Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS Do not use anonymous structs or unions; give all struct members a name, even if it is never used. Anonymous structs and unions are a GCC extension. They are members of a parent structure and have no names. You access the elements inside them as if they were direct members of the parent class. If you have an anonymous struct or union inside a union and you use -O4 optimization, you may get the mistaken error "symbol so-and-so redeclared with incompatible type" at link time. This bug can only happen in COFF mode. Essentially the same bug was previously fixed for EABI and was known as CODEGEN-1191.
CODEGEN-4581 Using the C interlister with C++14 features may generate error Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS Do not use the -s source interlisting option When using the -s C source interlisting option, the compiler may emit a bogus assembly directive for functions which do not have a body in the source code (e.g. certain implicit constructors). The assembler will emit an error when encountering this directive.
CODEGEN-4576 hex --ascii option truncates address to 16 bits Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS Use the hex converter from an earlier release When generating an "ASCII" format hex file, the hex converter would mistakenly truncate addresses to the lower 16 bits.
CODEGEN-4419 Compiler erroneously speculates indexed load from the stack Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS Modify the source code of the offending function to make local variables "volatile." There's no obvious way to pre-determine that a function will suffer from this bug; you just have to wait for the bug to happen, look at the line number of the offending instruction (which will always be a load with indexed addressing with base register SP), and go to the function at that line number. Make every local variable in that function "volatile." If it's a C++ function, you may need to make the function "volatile." The compiler moves instructions from one block to another to increase parallelism. Usually this is done by predicating (adding a condition to) every instruction that is moved above a branch. However, in some cases, the compiler will "speculate" the instruction, which means removing the condition entirely. This is done when the instruction's side-effects are judged to be safe, such as load of a local variable. In the case that the instruction's condition would have been false, this load will be useless, but at least it will be safe, because the stack pointer (SP) is at a legal location, and there won't be a memory fault. However, when a local variable's value is read with an indexed expression, the index register is not necessarily speculated exactly when the load is, so the index register may have a garbage value. In this test case, the load was speculated, but the index register definition wasn't, so in the false branch, the computed address was garbage, and we would read a random memory address, causing a memory fault. (Even though SP was perfectly valid, the index register was garbage, so SP+index might point anywhere in memory.)
CODEGEN-4407 Not using const causes unexpected build error when calling std::sort Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS Remove unnecessary const from helper in s__algo.c
CODEGEN-4339 div() and ldiv() return incorrect result when built with -o4 option Fixed MSP430_18.1.0.LTS MSP430_18.1.0.LTS
CODEGEN-4280 Using ULP advisor with C++ templates may cause the compiler to crash Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS The compiler may crash when using ULP advisor on C++ code that contains templates
CODEGEN-4182 Should ignore option --pending_instantiations when compiling C files Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS If the user wishes to use the option --pending_instantiations, they must add this option individually to each C++ file. The compiler option --pending_instantiations only makes any sense when used with C++ code. It cannot have any effect on C code. Indeed, when passed as an option to a compilation of C code, the compiler will stop and emit an error, "pending instantiations option can be used only when compiling C++" This is troublesome when trying to compile a mixture of C and C++ files in CCS. If the user wishes to use the option --pending_instantiations, they cannot just add this option to the global compiler options list; they must add this option individually to each C++ file.
CODEGEN-4113 Assembler computes wrong result for expression 0x232800 % 0x10000 Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS In some instances, as in the original test case, the AND operator can be used instead, but that is not a general workaround. The modulo operator in the TI assembler, for releases made in mid-to-late 2016 and all of 2017, is unreliable. In some cases it will produce an incorrect answer.
CODEGEN-4078 LInker takes over 5 minutes to finish Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS None. If the linker command file wants to be that specific about memory ranges, then the work has to be done, and the option to disable the work has its own bug. Linking may take excessively long when the linker command file specifically places a lot of variables at specific addresses, especially for C2000. The original report was placing more than 300 variables. The --no_placement_optimization option is not a workaround because it causes a linker crash. Both problems are fixed together.
CODEGEN-3955 libc++ has incorrect implementation of pointer_safety Fixed MSP430_18.1.0.LTS The implementation of std::pointer_safety is a struct, rather than as an enum_class, as required by the C++ standard.
CODEGEN-3931 Compiler crashes while handling 0 length array in zero sized struct Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS None The compiler crashes while parsing a struct or class with zero-sized members in C++ mode.
CODEGEN-3918 Writing multiple input sections in one line unexpectedly changes how input sections are combined into output sections Fixed MSP430_18.1.0.LTS MSP430_18.1.0.LTS Stick with separate lines, if there are subsection cases like this one that should be comprehended. In a linker command file, using a line like "hello.obj (.const, .far)" may link differently than two lines with one section each. The problem is that the single line is interpreted as the OR of the two sections, and the linker does not understand that the OR also encompasses any of their subsections. Two separate lines are analysed separately and completely.
CODEGEN-3858 OFD gets DIE attribute offset wrong when using --dwarf_display=none,dinfo Fixed MSP430_18.1.0.LTS If you use --dwarf_display=none,dinfo, use --dwarf_display=none,dinfo,types instead You can use OFD to display the DWARF debugging information in your object files by using the option '--dwarf' (or -g). You can narrow the categories of DWARF information displayed by using the '--dwarf_display' option. If you use the option --dwarf_display=none,dinfo you will see the DWARF DIE objects in the .dwarf_info section, but you will not see any DW_AT_type attributes unless you also use the "types" flag. This is not a bug. However, when OFD skips a DW_AT_type attribute, it displays the offset of the skipped DW_AT_type for the next attribute instead of the next attribute's correct offset.
CODEGEN-3801 Linker crashes with INTERNAL ERROR (unhandled exception) Fixed MSP430_18.1.0.LTS The linker experiences a segmentation fault when there is a reference from a debug section to a symbol without a section (for example, an absolute symbol).
CODEGEN-3794 False warning for MISRA 10.1/10.2 when commutative binary operands swapped Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS In certain cases, the compiler could emit an unwarranted MISRA diagnostic about type conversion. This would occur when using a commutative binary arithmetic operator with mixed operand types. The compiler mistakenly compared one operand's type to the other type. It should have compared each type to the promoted type of the operation.
CODEGEN-3619 pragma triggers false MISRA-C:2004 19.1/A warning Fixed MSP430_18.1.0.LTS N/A Certain pragmas appearing prior to #include statements, such as #pragma RESET_MISRA, would cause MISRA warning 19.1/A to be issued: MISRA-C:2004 19.1/A: #include statements in a file should only be preceded by other preprocessor directives or comments
CODEGEN-3595 Stack usage under reports stack amount used because it fails to handle function aliases Fixed MSP430_18.1.0.LTS MSP430_18.1.2.LTS CCS Stack Assistant did not accurately track aliased functions-- functions whose definitions are represented by a different symbol name. Now, the alias function will be used to determine stack size correctly, and the aliased function call name will be replaced with its alias. Currently, the Stack Assistant GUI is not capable of showing both the aliased and alias function names for calls to aliased functions-- this will require a future update.
CODEGEN-2373 Internal linker error triggered by function alias Fixed MSP430_18.1.0.LTS Linker sometimes generates "Assertion failed" message and aborts.
CODEGEN-1979 Statements before declarations with no white space (aggravated by macros) may cause incorrect parser error Fixed MSP430_18.1.0.LTS Do not start any statement in the left-most column Rearrange your code so that there are no statements before declarations. C99 and C++ allow statements before declarations in functions. This is not allowed by the C89 language, but as an extension, the TI compiler allows such statements in relaxed mode. However, in certain circumstances, the compiler may emit the 'error: expected "}"' for otherwise legal code which has statements before declarations. This problem can only occur in relaxed C89 mode (which is the default mode), and 1) you have a function with statements that start in the left-most column, or 2) you use macros where the macro body contains C code with statements before declarations.

Generated on Mon Apr 30 17:02:20 2018