Currently, VLA are not forbidden for static variable. This leads to problems even if for fixed-size array when the size expression uses the ternary operator (cond ? then-value : else-value) because it is parsed as a general expression which leads to code generated in this case. This commit solve the problem by forbidding VLA for static variables. Although not required for the fix, avoiding code generation when the expression is constant would be a nice addition though.
Unified · Split
| @@ -3250,7 +3250,7 @@ static void type_decl(CType *type, AttributeDef *ad, int *v, int td) · 3249 unmodified lines | ||
| 3250 | 3250 | { |
| 3251 | 3251 | Sym *s; |
| 3252 | 3252 | CType type1, *type2; |
| 3253 | − int qualifiers, storage; | |
| 3253 | + int qualifiers, storage, saved_nocode_wanted; | |
| 3254 | 3254 | |
| 3255 | 3255 | while (tok == '*') { |
| 3256 | 3256 | qualifiers = 0; |
| @@ -3304,7 +3304,12 @@ static void type_decl(CType *type, AttributeDef *ad, int *v, int td) · 47 unmodified lines | ||
| 3304 | 3304 | } |
| 3305 | 3305 | storage = type->t & VT_STORAGE; |
| 3306 | 3306 | type->t &= ~VT_STORAGE; |
| 3307 | + if (storage & VT_STATIC) { | |
| 3308 | + saved_nocode_wanted = nocode_wanted; | |
| 3309 | + nocode_wanted = 1; | |
| 3310 | + } | |
| 3307 | 3311 | post_type(type, ad); |
| 3312 | + nocode_wanted = saved_nocode_wanted; | |
| 3308 | 3313 | type->t |= storage; |
| 3309 | 3314 | if (tok == TOK_ATTRIBUTE1 || tok == TOK_ATTRIBUTE2) |
| 3310 | 3315 | parse_attribute(ad); |