0000545: /bin/dash script is confused for C source

ID	Project	Category	View Status	Date Submitted	Last Update

0000545	file	General	public	2024-07-22 19:16	2024-07-22 19:16

Reporter	luigisemenzato	Assigned To
Priority	normal	Severity	major	Reproducibility	always
Status	new	Resolution	open
Product Version	5.44

Summary	0000545: /bin/dash script is confused for C source
Description	The ChromeOS build can fail when it includes a shell script with #! /bin/dash in its first line. This happens because dash is not in the list of known shells, so file ignores the #! line, and instead finds a line containing "main() {" which is valid shell, but also valid C. I suggest two fixes: 1. Include dash in the list of known shells (hopefully this is not controversial). 2. Using an interpreter that compiles and runs a C source seems pretty unusual (but not impossible: #!/usr/bin/tcc -run) and I am wondering if this would deserve deeper analysis, i.e if the interpreter executable ends in "sh" treat it as a script even if it contains "main () {". In fact, it may be better to call such a file a "script" rather than C source whenever its first line starts with #!. But I realize this might break existing code. Thanks!
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Date Modified	Username	Field	Change
2024-07-22 19:16	luigisemenzato	New Issue