compiler allocation failed

[markfirmware]

pub fn main() void {
    line_buffer[0] = 0;
}

var line_buffer: [10 * 1024 * 1024]u8 = undefined;

$
zig build-exe main.zig
allocation failed
Unable to dump stack trace: debug info stripped

[daurnimator]

Works on my computer; with no zig-cache:

 $ /usr/bin/time -v  zig build-exe 4593.zig 
	Command being timed: "zig build-exe 4593.zig"
	User time (seconds): 0.91
	System time (seconds): 0.27
	Percent of CPU this job got: 98%
	Elapsed (wall clock) time (h:mm:ss or m:ss): 0:01.21
	Average shared text size (kbytes): 0
	Average unshared data size (kbytes): 0
	Average stack size (kbytes): 0
	Average total size (kbytes): 0
	Maximum resident set size (kbytes): 1085480
	Average resident set size (kbytes): 0
	Major (requiring I/O) page faults: 1
	Minor (reclaiming a frame) page faults: 261252
	Voluntary context switches: 95
	Involuntary context switches: 13
	Swaps: 0
	File system inputs: 0
	File system outputs: 3040
	Socket messages sent: 0
	Socket messages received: 0
	Signals delivered: 0
	Page size (bytes): 4096
	Exit status: 0

[markfirmware]

I get this on debian 10 x64 with 1GB mem 0.5GB swap:

allocation failed
Unable to dump stack trace: debug info stripped
Command terminated by signal 6
    Command being timed: "zig build-exe main.zig"
    User time (seconds): 0.35
    System time (seconds): 0.08
    Percent of CPU this job got: 99%
    Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.44
    Average shared text size (kbytes): 0
    Average unshared data size (kbytes): 0
    Average stack size (kbytes): 0
    Average total size (kbytes): 0
    Maximum resident set size (kbytes): 175620
    Average resident set size (kbytes): 0
    Major (requiring I/O) page faults: 0
    Minor (reclaiming a frame) page faults: 40091
    Voluntary context switches: 2
    Involuntary context switches: 79
    Swaps: 0
    File system inputs: 0
    File system outputs: 8
    Socket messages sent: 0
    Socket messages received: 0
    Signals delivered: 0
    Page size (bytes): 4096
    Exit status: 0

[frmdstryr]

I created a heroku buildpack for zig to tried and deploy a stupid simple zig streamserver app and it also fails build on a server with 1GB of memory without any extra swap space.

-----> Building zig project
remote: allocation failed
remote: Unable to dump stack trace: debug info stripped
remote: 

After adding 1GB of swap space it worked.

From watching with top it seems zig requires about minimum of 1.2GB of free memory to build a very simple project.

[andrewrk]

Duplicate of #471. The main effort to address this is working towards the self-hosted compiler + #6378.