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Merged
merged 2 commits into from
Jul 26, 2022
Merged

Support for _Alignas(...) #108

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4446ee6
Add problematic example
michael-schwarz Jul 22, 2022
64fea86
alignas support in parser
michael-schwarz Jul 22, 2022
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1 change: 1 addition & 0 deletions src/frontc/clexer.mll
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Expand Up @@ -184,6 +184,7 @@ let init_lexicon _ =
("__alignof", fun loc -> ALIGNOF loc);
("_Alignof", fun loc -> ALIGNOF loc);
("__alignof__", fun loc -> ALIGNOF loc);
("_Alignas", fun loc -> ALIGNAS loc);
("__volatile__", fun loc -> VOLATILE loc);
("__volatile", fun loc -> VOLATILE loc);
("__real__", fun loc -> REAL loc);
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3 changes: 3 additions & 0 deletions src/frontc/cparser.mly
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Expand Up @@ -273,6 +273,7 @@ let transformOffsetOf (speclist, dtype) member =
%token<Cabs.cabsloc> THREAD

%token<Cabs.cabsloc> SIZEOF ALIGNOF
%token<Cabs.cabsloc> ALIGNAS

%token EQ PLUS_EQ MINUS_EQ STAR_EQ SLASH_EQ PERCENT_EQ
%token AND_EQ PIPE_EQ CIRC_EQ INF_INF_EQ SUP_SUP_EQ
Expand Down Expand Up @@ -1051,6 +1052,8 @@ decl_spec_list_common: /* ISO 6.7 */
/* ISO 6.7.4 */
| INLINE decl_spec_list_opt { SpecInline :: $2, $1 }
| NORETURN decl_spec_list_opt { SpecNoreturn :: $2, $1 }
| ALIGNAS LPAREN expression RPAREN decl_spec_list_opt { $5, $1 }
| ALIGNAS LPAREN type_name RPAREN decl_spec_list_opt { $5, $1 }

| cvspec decl_spec_list_opt { (fst $1) :: $2, snd $1 }
/* specifier pattern variable (must be last in spec list) */
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11 changes: 11 additions & 0 deletions test/small1/alignas.c
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@@ -0,0 +1,11 @@
#include <stdalign.h>

struct XXH3_state_s {
_Alignas(int) unsigned char customSecret1[25];
_Alignas(64) unsigned char customSecret2[25];
alignas(64) unsigned char customSecret3[25];
};

int main() {

}
1 change: 1 addition & 0 deletions test/testcil.pl
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Expand Up @@ -724,6 +724,7 @@ sub addToGroup {
addTestFail("testc11/clang-c11-generic-1-1", "Multiple compatible associations in generic");
addTestFail("testc11/clang-c11-generic-1-2", "No compatible associations or default in generic");
addTest("testc11/clang-c11-generic-2");
addTest("testc11/alignas");

# ---------------- c-torture -------------
## if we have the c-torture tests add them
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