---------------------------------------------------------------------- 1. Expression var = value >= 0.0 ? 1.0 : -1.0; Does Not Work The follwing program illustrates the problem: /* Compiler options needed: -Od */ #include main() { double value = 30720.0 ; double sign, sign2 ; // Should work, but doesn't; used to work in July Release sign = value >= 0.0 ? 1.0 : -1.0; // workaround if (value >= 0.0) sign2 = 1.0; else sign2 = -1.0; // results: Sign : 2.122e-313 ; Sign2 : 1 printf("Sign : %g ; Sign2 ; %g \n", sign, sign2); } ---------------------------------------------------------------------- 2. Error C2468: 'new' : 'const'/'volatile' Generated Regression from the July release. ARM 5.3.3 states that type-specifier-list may not contain const, volatile, class declarations or enum declarations. /* Compile options needed: none */ void foo (void) { const int **ppi; ppi = new const int *[10]; } ---------------------------------------------------------------------- 3. -Zg Gives Internal Compiler Error With __stdcall /* Compile options needed: -Zg */ int __stdcall foo (char *, ...); ---------------------------------------------------------------------- 4. Code Generation Problem The asm code is wrong. It looks like the compiler noticed that all it had to do was compare ah to 9, but the asm code is cmp eax to 9. /* Compile options needed: -Fa */ main () { unsigned num; unsigned x; num = 1388; if (((unsigned char) ((num & 0x00000F00) >> 8)) > 9) x = num; else x = num + 1; } ; assembly code generated _main PROC NEAR ; Line 2 push ebp mov ebp, esp sub esp, 8 push ebx push esi push edi ; Line 7 mov DWORD PTR _num$[ebp], 1388 ; 0000056cH ; Line 9 mov eax, DWORD PTR _num$[ebp] and eax, 3840 ; 00000f00H cmp eax, 9 jle $L109 ; Line 10 mov eax, DWORD PTR _num$[ebp] mov DWORD PTR _x$[ebp], eax ; Line 11 jmp $L110 $L109: ; Line 12 mov eax, DWORD PTR _num$[ebp] inc eax mov DWORD PTR _x$[ebp], eax $L110: ; Line 14 $L106: pop edi pop esi pop ebx leave ret 0 _main ENDP _TEXT ENDS END ---------------------------------------------------------------------- 5. Code Generation Problem For Default Arguments in C++ The wrong parameter is used to fill in default argments in C++. ---------------------------------------------------------------------- 6. Incorrect Syntax Errors Initializing Static Object This is a regression from the July release. ---------------------------------------------------------------------- 7. -Od -Zi Cause Assert in P2 emit.c db_name (name==NULL) /* Compile options needed: -Od -Zi */ static union {char *bptr; long *lptr; short *sptr;}; char * func() { return bptr; } ---------------------------------------------------------------------- 8. Allocation Size of enum Must be 4, Not 2 in C++ The output of this program is: Size of Message type: [4] Size of Message Descriptor: [44] The size of operator of enum returns 4 while the allocator of the table is using 2. The size of operator of the structure is using 44 while the actual size is 40. /* Compiler options needed: -Od */ #include #include #define ERROR 1 #define STANDARD 2 typedef unsigned char U8; /* byte */ typedef unsigned char u8; /* byte */ typedef u8 BOOLEAN; enum MESSAGE_TYPE { FIRST_MESSAGE_TYPE = 0, INFO = 0, WARNING = 1, ERROR = 2, FATAL = 3, N_MESSAGE_TYPES = 4 }; enum MESSAGE_CATEGORY { FIRST_MESSAGE_CATEGORY = 0, STANDARD = 0, PERFORMANCE = 1, SOURCE_ANALYSIS = 2, SYNCHRONIZATION = 3, VERBOSE = 4, TEXT_FRAGMENT = 5, N_MESSAGE_CATEGORIES = 6 }; struct Message_descriptor { char* tag; enum MESSAGE_TYPE type; enum MESSAGE_CATEGORY category; int n_printed; int n_suppressed; BOOLEAN enabled_sw; BOOLEAN default_enabled_sw; BOOLEAN pass_2_enable; U8 audit_flag; int suppression_threshold; int message_id; int arg_count; BOOLEAN no_prefix; BOOLEAN include_in_message_summary; char* text; }; struct Message_descriptor msg_desc [] = { #if 0 { "ISDVECTOR", ERROR, STANDARD, 0,0,1,1,0,3,10, 0, 1, 0, 1, "Message 1" }, { "ISDBASED", ERROR, STANDARD, 0,0,1,1,0,3,10, 0, 1, 0, 1, "Message 2" }, { "ISDPROTECT", ERROR, STANDARD, 0,0,1,1,0,3,10, 0, 1, 0, 1, "Message 3" }, #endif { "ISDCONFLICT", ERROR, STANDARD, 0,0,1,1,0,1,10, 0, 1, 0, 1, "Message 4"} }; int main (int argc, char* argv[]) { printf("Size of Message type: [%i]\n", sizeof(enum MESSAGE_TYPE)); printf ("Size of Message Descriptor: [%i]\n", sizeof(struct Message_descriptor)); return 0; } ---------------------------------------------------------------------- 9. Incorrect Floating Point Results In the program output, the values of g and h are zero. This code worked in the July release. /* Compiler options needed: none */ #include main( int argc, char *argv[] ) { int flag = 1; double g = (flag ? 1.0 : 2.0); double h = (flag ? 2.0 : 1.0); printf( "flag %d, g %f, h %f\n", flag, g, h ); return 0; } ---------------------------------------------------------------------- 10. C4018: '==' signed/unsigned mismatch Generated Incorrectly This is a regression from the July release. ---------------------------------------------------------------------- 11. MFC Apps Fail to Link Due To Unresolved Externals The fix was to make static member functions assume the ambient calling convention. ---------------------------------------------------------------------- 12. Incorrect Syntax Error For Function-style Cast The errors generated are: error C2144: syntax error : missing ')' before type 'Id' error C2512: 'Other' : no appropriate default constructor available This is a regression from the July release /* Compiler options needed: none */ class Id { public: Id(int) {} }; class Other { public: Other(Id); }; void func(int xx) { Other *off; Other ot(Id(1)); // Compiles Other ot2((Id)1); // Compiles Other ot3(Id(xx)); // Compiles Other ot4((Id)xx); // Compiles off=new Other((Id)xx); // Compiles off=new Other(Id(xx)); // Syntax error } ---------------------------------------------------------------------- 13. Incorrect C2177, C4056 and Floating-point Values When these errors occur, sometimes values in the array are initialized correctly and other times they are completely wrong. With the same test values, the results are consistent from compile to compile, however when other numbers (in range) are specified, the values are incorrect. When the values are wrong, they usually turn into 1.61667e-308. error C2177: constant too big warning C4056: overflow in float-point constant arithmetic This is a regression from the July release. ---------------------------------------------------------------------- 14. Initialization of Static Array Loops Indefinitely The algorithm for initialization was n-cubed. This was fixed. ----------------------------------------------------------------------