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Author SHA1 Message Date
Jesse Rosenstock
1cf9404c19 Support C2X _Static_assert(expr) syntax 
This makes the message in _Static_assert(expr, message) optional.

Fixes #1188.
 2020-08-16 11:38:20 +02:00
Jesse Rosenstock
c4698dfd07 Use C89 semantics for integer conversions 
Previously, the following rules were used for binary operators:
* If one of the values is a long, the result is long.
* If one of the values is unsigned, the result is also unsigned.
* Otherwise the result is an int.

C89 specifies the "usual arithmetic conversions" as:
* The integral promotions are performed on both operands.
* Then the following rules are applied:
  * If either operand has type unsigned long int, the other operand is
    converted to unsigned long int.
  * Otherwise, if one operand has type long int and the other has type
    unsigned int, if a long int can represent all values of an unsigned int,
    the operand of type unsigned int is converted to long int; if a long int
    cannot represent all the values of an unsigned int, both operands are
    converted to unsigned long int.
  * Otherwise, if either operand has type long int, the other operand is
    converted to long int.
  * Otherwise, if either operand has type unsigned int, the other operand is
    converted to unsigned int.
  * Otherwise, both operands have type int.
https://port70.net/~nsz/c/c89/c89-draft.html#3.2.1.5

As one example, these rules give a different result for an operator
with one long operand and one unsigned int operand.  Previously,
the result type was unsigned long.  With C89 semantics, it is just long,
since long can represent all unsigned ints.

Integral promotions convert types shorter than int to int (or unsigned int).
Both char and unsigned char are promoted to int since int can represent
all unsigned chars.
https://port70.net/~nsz/c/c89/c89-draft.html#3.2.1.1

Rename promoteint to ArithmeticConvert, since this is more accurate.

Fixes #170
 2020-08-15 19:14:31 +02:00
mrdudz
8197e3c7cd make it actually compile again :) 2020-08-14 21:07:39 +02:00
mrdudz
f0e4053a0d added test related to issue #1178 2020-08-14 19:58:58 +02:00
acqn
1d28e8e3de Improved test case for Issue #191. 2020-08-14 18:33:54 +02:00
acqn
b19bb14348 Fixed checking conflitcing declarations with external vs other linkage. 2020-08-14 18:33:54 +02:00
acqn
13ed557b92 Fixed compatibility checking of function declarations by using the composite types of them. 2020-08-14 18:33:54 +02:00
acqn
44d52935da Utility for getting the composite types of functions. 2020-08-14 18:33:54 +02:00
acqn
8a417ff039 Improved ESU declaration failure handling. 2020-08-14 18:15:31 +02:00
mrdudz
dc83eb15af added test related to issue #1181 2020-08-14 16:12:17 +02:00
Bob Andrews
83452ae6b3
Merge pull request #1182 from acqn/StructPtrField 
[cc65] Fixed testing 'struct->field'
 2020-08-14 14:13:39 +02:00
acqn
0dfe9ff5fe Fixed testing 'struct->field'. 2020-08-14 08:32:22 +08:00
acqn
0fa18886c0 Fixed copying structs/unions > 4 bytes. 2020-08-13 08:59:05 +02:00
acqn
03b37cf712 Fixed type comparisons of typedefs and arrays. 2020-08-12 15:04:26 +02:00
acqn
eb4464e828 Fixed type comparisons of ESU types with stricter rules. 2020-08-12 15:04:26 +02:00
acqn
8b8561161c Moved #1098 bug tests from test/misc to test/err as they are fixed now. 2020-08-12 15:02:43 +02:00
acqn
fe44fe963f Disallowed empty enums. 2020-08-12 15:02:43 +02:00
acqn
97065faf1a Disallowed struct/union types of 0 size as cc65 is not ready to support them. 2020-08-12 15:02:43 +02:00
acqn
4dfc1a5ded Using a dedicated SC_FICTITIOUS flag in case of parsing errors. 2020-08-12 15:01:31 +02:00
acqn
bde5be6793 Improved error message on initializing extern variables inside functions. 2020-08-12 15:01:31 +02:00
acqn
b62b1650f5 Improved error messages on struct/union type multiple definitions. 2020-08-12 15:01:31 +02:00
acqn
fe3f726fd6 Improved incomplete enum typed diagnostics. 2020-08-12 15:01:31 +02:00
acqn
0d53806490 Avoided excess errors in incomplete struct assignment. 2020-08-12 15:01:31 +02:00
acqn
9317db6642 Slightly improved type error messages of 'op='. 2020-08-12 15:01:31 +02:00
acqn
9fcfa3fc49 Fixed full type names of functions with "empty" parameter list. 2020-08-12 15:01:31 +02:00
acqn
68d63b089d Reduced error flood raised by misplaced variable declarations. 2020-08-12 15:01:31 +02:00
acqn
0f1a5e0520 Set enum tag definition flags. 2020-08-09 22:12:36 +02:00
acqn
1dd899c7c9 Fixed non-file-scope multiple definition checking. 2020-08-09 22:12:36 +02:00
acqn
d68cd90e47 Function declaration in functions cannot have storage classes other than 'extern'. 2020-08-07 10:16:33 +02:00
acqn
43efc256f1 Changed error/warning messages not using the term 'tentative' according to PR reviews. 2020-08-07 10:16:33 +02:00
acqn
b2d3b8379c Warning about forward declaration of enum types in non-cc65 modes. 2020-08-07 10:16:33 +02:00
acqn
8cdffc1944 No storage for unsuccessfully parsed variables. 2020-08-07 10:16:33 +02:00
acqn
fdef067629 Fixed tentative definition of variables of incomplete types that may be completed later. 
Tenative arrays that never get completed are now assumed each to have one element.
 2020-08-07 10:16:33 +02:00
acqn
fdd120db49 Enabled to output errors and warnings about tentative definitions. 2020-08-07 10:16:33 +02:00
acqn
f59d6b8f6a Redefining enums/structs/unions of 0 size is no longer treated as declarations and thus forbidden. 2020-08-07 10:16:33 +02:00
Jesse Rosenstock
cdfc1afd89 Fix vacuous comparison warning from 0df45fe 
cc65/symentry.c:306:60: warning: address of array 'Sym->Name' will always evaluate to 'true' [-Wpointer-bool-conversion]
    sprintf (TypeName, "%s %s", GetBasicTypeName (T), Sym->Name ? Sym->Name : "<unknown>");
                                                      ~~~~~^~~~ ~
 2020-08-05 17:48:13 +02:00
Jesse Rosenstock
d8f9201ecd LoadExpr: Optimize <= 8-bit bit-field loads 
Set CF_FORCECHAR to do as many operations as char ops as possible.
Clear high byte at the end.
 2020-08-05 12:49:46 +02:00
Jesse Rosenstock
0c72647edd Remove extra ED_TestDone call 
Accidentally added in #1141.
 2020-08-03 12:40:58 +02:00
acqn
bae431eab0 Fixed error message of CheckedPSizeOf(). 2020-08-03 06:18:28 +02:00
acqn
e3d913b81a Fixed the reference output of test/misc/goto.c (test/misc/goto.ref). 2020-08-02 23:51:11 +02:00
acqn
d6aa446b54 Error info for loading expressions of incomplete enum types. 
No more "Illegal type 0016".
 2020-08-02 23:51:11 +02:00
acqn
6df4f1996b Improved diagnostics with more detailed type names. 2020-08-02 23:51:11 +02:00
acqn
11a5f0edf1 No "Statement has no effect" warnings on statements with errors. 2020-08-02 23:51:11 +02:00
acqn
7e68a24625 Clearer warning messages on unused symbols. 2020-08-02 23:51:11 +02:00
acqn
e8c2886455 Improved error messages on redefinitions of constants and bit-fields. 2020-08-02 23:51:11 +02:00
acqn
ef5a4db12e Improved warning messages on UB shifts. 2020-08-02 23:51:11 +02:00
acqn
2ab7272673 Improved warning on comparison of unsigned type < 0. 2020-08-02 23:51:11 +02:00
acqn
99ac1c46da Made errors/warnings statistic message visible when there are errors. 2020-08-02 23:51:11 +02:00
acqn
44e3080ea9 Increased upper limit of allowed errors before aborting. 2020-08-02 23:51:11 +02:00
acqn
00c16d34a4 Minor fixes for HandleSymRedefinition(). 2020-08-02 23:51:11 +02:00