C static initializers: cast-expression and int→double conversion silently produce 0

• Type: bug (miscompile — silent zero). Track C.
• Priority: HIGH — tiny repros, silent wrong data.
• Found: 2026-07-06 c-testsuite run.

Failing tests

• 00107 (8 lines): typedef int myint; myint x = (myint)1; → x is 0 (main returns x-1 = -1 → exit 255)
• 00119 (7 lines): double x = 100; → x is 0.0 (return x < 1; exits 1)

Symptom

File-scope initializer with (a) a cast around a constant, or (b) an integer literal initializing a double, emits 0 instead of the value. Const-expr evaluator in the global-init path doesn't fold casts and doesn't convert int literal → double bits.

Fix site

cparser.inc global var init const-expr evaluation.

Gate

Drop 00107.c/00119.c from test/c-conformance/pxx.skip; runner green.

Log

• 2026-07-07 — resolved, commit 5ba2f898.