In the process of cross-compiling from Win64 to Solaris, I came across a
situation where the compiler created a damaged program file. Conducted
research on the problem. Since my English proficiency is not very good,
but I asked the AI to formulate a bug report in English:
Subject: Potential filename truncation in Linker Script generation
(t_sunos, t_linux, t_bsd)
Description:
While cross-compiling from Win64 to Oracle Solaris, I discovered that
the generated linker command line contains corrupted paths.
Specifically, the -Map file path is truncated to exactly 40 characters
(or less, appearing as 8.3-like truncation in some cases), leading to
collisions where the Map file and the Output binary have the same name,
resulting in a corrupted executable.
Root Cause:
The issue lies in several linker modules where command-line fragments
are stored in fixed-length strings (e.g., string[40], string[60]). When
the project is located in a deep directory structure (common in Windows
environments), the path plus the linker flag exceeds this limit and is
silently truncated.
Affected files and variables:
compiler/systems/t_sunos.pas:
StripStr, StaticStr, RedirectStr are declared as string[40].
DynLinkStr is declared as string[60].
compiler/systems/t_linux.pas:
StripStr, StaticStr, GCSectionsStr are declared as string[40].
compiler/systems/t_bsd.pas:
StripStr, StaticStr, GCSectionsStr are declared as string[63].
DynLinkStr is declared as string[60].
Steps to reproduce:
Create a project in a deep directory (e.g., path length > 35 chars).
Enable Map file generation (-Xm).
Cross-compile for Solaris/Linux/BSD.
Observe the linker call via -vt: the -Map argument will be truncated.
Suggested Fix:
Replace fixed-length string declarations (string[N]) with TCmdStr in the
MakeExecutable and MakeSharedLibrary methods of the affected units.
P.S. My path for output binary was
"D:\Work\CFW_RTL\DevHelpers\H1_Stack". Not so long, but already give
problem.
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