Re: [Tinycc-devel] Segfault on musl with '-run'

[Страхиња Радић]

On 22/07/19 09:03, Arthur Williams via Tinycc-devel wrote:
> Hi,
> 
> Was writing an application and noticed a bug. The script can be reduced
> to the following:
> 
> ```
> #!/bin/tcc -run
> #include <time.h>
> int main() {
>     struct timespec start, current;
>     clock_gettime(CLOCK_MONOTONIC, &start); // Segfaults
> }
> ```
> 
> When the file is executed, it crashes at the indicated line. If I
> explicitly compile the program and run it, it behaves correctly. Also tested
> the same script on a glibc based machine and it also didn't crash.

        $ cd src/musl-1.2.3
        $ grep -r clock_gettime
        WHATSNEW:- zero-syscall clock_gettime support (dynamic-linked x86_64 
only)
        WHATSNEW:- vdso clock_gettime/gettimeofday/time acceleration on x86_64
        WHATSNEW:- non-working clock_gettime fallback for old kernels
        WHATSNEW:- vdso clock_gettime acceleration on i386 (new kernel feature)
        WHATSNEW:- vdso clock_gettime on arm
        WHATSNEW:- mips vdso clock_gettime support
        WHATSNEW:- arm clock_gettime was broken on some hw due to bad time64 
vdso
        ...

could be to "dynamic-linked x86_64 only" mentioned in WHATSNEW.

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