Userzxcvbvnm added the bug label to Issue #8623.
Userzxcvbvnm opened issue #8623:
Test Case
The c program is as follows:
#include <stdio.h> #include <time.h> void clock_time_get_00002_obtwo() { printf("Enter function clock_time_get_00002_obtwo\n"); struct timespec ts; if(clock_gettime(CLOCK_MONOTONIC, &ts) == -1) { perror("clock_gettime error"); return; } printf("Current time: %ld seconds, %ld nanoseconds\n", ts.tv_sec, ts.tv_nsec); } int main() { printf("Enter function main\n"); clock_time_get_00002_obtwo(); return 0; }
Steps to Reproduce
(1)compiler it into Wasm binaries by
./wasi-sdk-21.0/bin/clang --target=wasm32-unkown-wasi --sysroot=./wasi-sdk-21.0/share/wasi-sysroot test.c -o test.wasm
Expected Results
Print:
Enter function main Enter function clock_time_get_00002_obtwo Current time: 2177580 seconds, 0 nanoseconds
And this is what other Wasm runtimes print, including wasmer, wamr and wasmedge.
Actual Results
Print:
Enter function main Enter function clock_time_get_00002_obtwo Current time: 0 seconds, 0 nanoseconds
Versions and Environment
Wasmtime version or commit: 19.0.2
Operating system: Ubuntu 20.04
Architecture: amd64
alexcrichton closed issue #8623:
Test Case
The c program is as follows:
#include <stdio.h> #include <time.h> void clock_time_get_00002_obtwo() { printf("Enter function clock_time_get_00002_obtwo\n"); struct timespec ts; if(clock_gettime(CLOCK_MONOTONIC, &ts) == -1) { perror("clock_gettime error"); return; } printf("Current time: %ld seconds, %ld nanoseconds\n", ts.tv_sec, ts.tv_nsec); } int main() { printf("Enter function main\n"); clock_time_get_00002_obtwo(); return 0; }
Steps to Reproduce
(1)compiler it into Wasm binaries by
./wasi-sdk-21.0/bin/clang --target=wasm32-unkown-wasi --sysroot=./wasi-sdk-21.0/share/wasi-sysroot test.c -o test.wasm
Expected Results
Print:
Enter function main Enter function clock_time_get_00002_obtwo Current time: 2177580 seconds, 0 nanoseconds
And this is what other Wasm runtimes print, including wasmer, wamr and wasmedge.
Actual Results
Print:
Enter function main Enter function clock_time_get_00002_obtwo Current time: 0 seconds, 0 nanoseconds
Versions and Environment
Wasmtime version or commit: 19.0.2
Operating system: Ubuntu 20.04
Architecture: amd64
alexcrichton commented on issue #8623:
Using wasi-sdk it generates a warning:
foo.c:14:60: warning: format specifies type 'long' but the argument has type 'time_t' (aka 'long long') [-Wformat] 14 | printf("Current time: %ld seconds, %ld nanoseconds\n", ts.tv_sec, ts.tv_nsec); | ~~~ ^~~~~~~~~ | %lld
which when fixed causes the program to print:
Enter function main Enter function clock_time_get_00002_obtwo Current time: 0 seconds, 571458 nanoseconds
which is the expected behavior of Wasmtime. The monotonic clock is relative to an arbitrary point and Wasmtime chooses instance creation as the relative point.
Last updated: Dec 23 2024 at 13:07 UTC