error compiling butch[1]

[rofl0r]

butch.c:512:18: error: Initialisation expression '&(stringptr){ ("#!/bin/sh\n%BUTCH_CONFIG\nexport butch_package_name=%BUTCH_PACKAGE_NAME\nbutch_cache_dir="$C"\nwget -O "$butch_cache_dir/%BUTCH_TARBALL" '%BUTCH_MIRROR_URL'\n"), (sizeof("#!/bin/sh\n%BUTCH_CONFIG\nexport butch_package_name=%BUTCH_PACKAGE_NAME\nbutch_cache_dir="$C"\nwget -O "$butch_cache_dir/%BUTCH_TARBALL" '%BUTCH_MIRROR_URL'\n") - 1) }' is not constant

[1] https://github.com/rofl0r/butch
tarball with embedded dependencies and portable Makefile is available here https://github.com/downloads/rofl0r/butch/butch-0.1.5.tar.bz2 (62KB)

btw, this test program here works

typedef struct str_struct {
        char *s;
        unsigned long l;
} str;

#define STRLIT(A) &(str) { (A), sizeof((A) - 1) }

str *test(void) {
        return STRLIT("test");
}

[rofl0r]

here is a testcase that can reproduce the bug

typedef struct str_struct {
        char *s;
        unsigned long l;
} str;

#define STRLIT(A) &(str) { (A), sizeof((A) - 1) }

enum foo {
        FOO = 0,
        BAR,
        BAZ
};

const str *arr[BAZ] = {
        [FOO] = STRLIT("foo"),
        [BAR] = STRLIT("bar"),
};

[MatzeB]

Your testcase is fixed in d7384b0.
(Also note that your first "working" testcase will fail in practice since compound literal in functions have automatic storage and can get deallocated when the function exits.)