diff options
author | Thomas Preud'homme <robotux@celest.fr> | 2020-08-14 23:04:13 +0100 |
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committer | Thomas Preud'homme <robotux@celest.fr> | 2020-08-14 23:04:13 +0100 |
commit | afd09586d7ead4f146ad7a7a471be34196b3c6bc (patch) | |
tree | 87854be29fb4264b979b700fa45445f58faa4c26 /tests/tests2/82_attribs_position.c | |
parent | e2ccf3981d78dfeb390d22c74625b60310100abb (diff) |
New upstream version 0.9.27+git20200814.62c30a4a
Diffstat (limited to 'tests/tests2/82_attribs_position.c')
-rw-r--r-- | tests/tests2/82_attribs_position.c | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/tests/tests2/82_attribs_position.c b/tests/tests2/82_attribs_position.c index 7c9f987..fd3f2c4 100644 --- a/tests/tests2/82_attribs_position.c +++ b/tests/tests2/82_attribs_position.c @@ -16,4 +16,50 @@ void __attribute__((stdcall)) foo (void) { } -int main () { return 0; } +#define __stdcall __attribute__((stdcall)) +extern int some_stdcall_func (int, int, int) __stdcall; +__stdcall int __stdcall some_stdcall_func(int foo, int bar, int baz) { + //printf("Hello from stdcall: %i %i %i\n", foo, bar, baz); + return 43; +} + +/* The actual attribute isn't important, must just be + parsable. */ +#define ATTR __attribute__((__noinline__)) +int ATTR actual_function() { + return 42; +} + +extern int printf (const char *, ...); +static int globalvar; +int main() +{ + void *function_pointer = &actual_function; + int localvar = 42, i; + + int a = ((ATTR int(*) (void)) function_pointer)(); + printf("%i\n", a); + + /* In the following we once misparsed 'ATTR *' is a btype + and hence the whole type was garbled. */ + int b = ( (int(ATTR *)(void)) function_pointer)(); + printf("%i\n", b); + + /* All these should work and leave the stack pointer in its original + position. */ + some_stdcall_func(1, 10, 100); + ((int __stdcall (*)(int, int, int))some_stdcall_func) (2, 20, 200); + ((int(*__stdcall)(int, int, int))some_stdcall_func) (3, 30, 300); + for (i = 0; i < 1024; i++) { + globalvar = i; + /* This was once misparsed at <= gitrev 325241c0, forgetting + the stdcall attribute on the function pointer leading to + stack increment being done twice (in callee and caller). + This will clobber 'i' and 'localvar' which is how we detect + this. */ + ((int(__stdcall*)(int, int, int))some_stdcall_func) (4, 40, 400); + if (localvar != 42 || globalvar != i) + printf("error, localvar=%d i=%d globalvar=%d\n", localvar, i, globalvar); + } + return 0; +} |