[Mingw-notify] [ mingw-Support Requests-2809222 ] -ansi flags increases file size

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Support Requests item #2809222, was opened at 2009-06-19 22:18
Message generated for change (Comment added) made by bughunter2
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Category: mingw runtime
Group: None
Status: Open
Priority: 5
Private: No
Submitted By: bughunter2 (bughunter2)
Assigned to: Nobody/Anonymous (nobody)
Summary: -ansi flags increases file size

Initial Comment:
Host System: Windows XP Professional SP3 (build 5.1.2600.xpsp_sp3_gdr.090206-1234)
Build Environment: cmd.exe

Bug reproducable with:
"GNU ld version 2.17.50 20060824" in combination with "gcc (GCC) 3.4.5 (mingw-vista special r3)"
"GNU ld (GNU Binutils) 2.19.1" in combination with "gcc (GCC) 4.3.0 20080305 (alpha-testing) mingw-20080502"

snippet:
<<<<<<<<<<<<<<<<<<<<<<
#include <stdio.h>

int main(void)
{
    printf("hello, world\n");
    return 0;
}
>>>>>>>>>>>>>>>>>>>>>>

If we compile this with `gcc -ansi -s -o test.exe test.c', the output sizes are as follows:
26112 bytes for "gcc 4.3.0 + ld 2.19.1"
27136 bytes for "gcc 3.4.5 + ld 2.17.50"

If we compile this with `gcc -s -o test.exe test.c' (no -ansi flag), the output sizes are as follows:
5120 bytes for "gcc 4.3.0 + ld 2.19.1"
5632 bytes for "gcc 3.4.5 + ld 2.17.50"

Trying to reproduce the same bug on other platforms (e.g. Linux) doesn't yield the same results, so I expect that this anomaly should be fixed...


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>Comment By: bughunter2 (bughunter2)
Date: 2009-06-23 18:05

Message:
Not a bug, but an anomaly, I'd say? Is there a good reason as to why the
compiled executable increases in size with the -ansi flag? The observed
differences can be quite significant.

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Comment By: Earnie Boyd (earnie)
Date: 2009-06-23 17:58

Message:
Definitely not a bug.

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Comment By: bughunter2 (bughunter2)
Date: 2009-06-23 10:44

Message:
Well, the differences are even larger for an application I wrote, which,
when compiled without -ansi, compiled to a size of roughly ~11KiB, and with
-ansi to a size of roughly ~33KiB.

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Comment By: Aaron W. LaFramboise (aaronwl)
Date: 2009-06-23 08:26

Message:
This is a mingwrt issue.  For this simple testcase, it is caused by using a
different printf() routine.  This is related to Keith's printf
improvements.

I'm not sure if this is really a bug.


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