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1.10
date	2026.02.09.22.03.34;	author rillig;	state Exp;
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1.9
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1.8
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1.7
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1.5
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1.4
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1.3
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1.2
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1.1
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1.4.2.1
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desc
@@


1.10
log
@tests/make: demonstrate use-after-free in the :@@ modifier

This test is not run regularly because the output varies depending on
the memory allocator and its configuration.  It can be run manually by:

make -r -f unit-tests/varmod-loop-delete.mk use-after-free
@
text
@make -f varmod-loop-delete.mk delete-active-variable || true
make: varmod-loop-delete.mk:31: Cannot delete variable "VAR" while it is used
	while evaluating "${:U:@@VAR@@@@} rest of the value" with value ""
	while evaluating variable "VAR" with value "${:U:@@VAR@@@@} rest of the value"
	in make[1] in directory "<curdir>"
make: Fatal errors encountered -- cannot continue
make: stopped making "delete-active-variable" in unit-tests

make -f varmod-loop-delete.mk delete-active-variable-in-target || true
: delete-active-variable-in-target: ' rest of the value'

exit status 0
@


1.9
log
@make: use '"filename" line 123' for locations instead of 'filename:123'

The format 'filename:123' is commonly used for identifying a location in
a file. Text editors recognize it and allow quick navigation through it.
The previous format was specific to make and would have required custom
support in editors.

The new format was already used in stack traces, except for the first
line. Now all lines use the same format.
@
text
@d1 2
a2 1
make: varmod-loop-delete.mk:20: Cannot delete variable "VAR" while it is used
d5 1
d7 6
a12 2
make: stopped making "all" in unit-tests
exit status 1
@


1.8
log
@make: reduce line length in error messages

The error messages for deeply nested parse errors were hard to decipher,
due to the large amount of text.  Split these messages into individual
lines, just as in the backtrace for .include files and .for loops.  This
unified backtrace makes the output more uniform.
@
text
@d1 1
a1 1
make: "varmod-loop-delete.mk" line 20: Cannot delete variable "VAR" while it is used
@


1.7
log
@make: in error messages for anonymous variables, log the value
@
text
@d1 3
a3 1
make: "varmod-loop-delete.mk" line 20: while evaluating variable "VAR" with value "${:U:@@VAR@@@@} rest of the value": while evaluating "${:U:@@VAR@@@@} rest of the value" with value "": Cannot delete variable "VAR" while it is used
@


1.6
log
@make: on error, print the targets to be made

This helps to understand situations with several nested sub-makes in
varying directories.
@
text
@d1 1
a1 1
make: "varmod-loop-delete.mk" line 20: while evaluating variable "VAR" with value "${:U:@@VAR@@@@} rest of the value": while evaluating "${:U:@@VAR@@@@} rest of the value": Cannot delete variable "VAR" while it is used
@


1.5
log
@make: add more context information to error messages

In case of a parse error or evaluation error, print the variable value
in addition to the variable name, to see the effects of previous
expression modifiers.

In nested make calls, print the current directory at the bottom of a
stack trace, as that information is otherwise hard to get in a parallel
build spanning multiple directories.
@
text
@d3 1
a3 1
make: stopped in unit-tests
@


1.4
log
@make: provide more context information for parse/evaluate errors
@
text
@d1 1
a1 1
make: "varmod-loop-delete.mk" line 20: while evaluating variable "VAR": while evaluating "${:U:@@VAR@@@@} rest of the value": Cannot delete variable "VAR" while it is used
@


1.4.2.1
log
@Sync with HEAD
@
text
@d1 1
a1 3
make: varmod-loop-delete.mk:20: Cannot delete variable "VAR" while it is used
	while evaluating "${:U:@@VAR@@@@} rest of the value" with value ""
	while evaluating variable "VAR" with value "${:U:@@VAR@@@@} rest of the value"
d3 1
a3 1
make: stopped making "all" in unit-tests
@


1.3
log
@tests/make: force line-based diagnostics to be listed in the tests

This way, contradictions between the intended output and the actual
output are closer together and have a better chance of being spotted.
@
text
@d1 1
a1 1
make: "varmod-loop-delete.mk" line 20: Cannot delete variable "VAR" while it is used
@


1.2
log
@make: remove period from end of error messages and warnings

The majority of the existing error messages and warnings does not
include a period at the end.  Follow this style consistently.
@
text
@d1 1
a1 1
make: "varmod-loop-delete.mk" line 19: Cannot delete variable "VAR" while it is used
@


1.1
log
@make: fix use-after-free in modifier ':@@'

Without memory allocator debugging, the newly added test doesn't show
any obvious failure.

With memory allocator debugging enabled, all make versions since
2016.02.27.16.20.06 crash with a segmentation fault.
@
text
@d1 1
a1 1
make: "varmod-loop-delete.mk" line 19: Cannot delete variable "VAR" while it is used.
@