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Fixed code that caused a seg-fault after parsing a (deferred) post-count argument followed by a (nested) function-call argument.

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The old broken code defers the count until the end of the (parent function's) argument list.  But, a nested function call clears the pointer to the deferred type.  That leads to an access violation.
The new code defers only until the end of each argument.  Fixes #1320.
This commit is contained in:
Greg King
2020-11-20 17:29:26 -05:00
parent 79bdc2d51f
commit 8b42f570e9
3 changed files with 34 additions and 37 deletions
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10
test/misc/Makefile
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@@ -100,12 +100,6 @@ $(WORKDIR)/bug1263.$1.$2.prg: bug1263.c | $(WORKDIR)
$(if $(QUIET),echo misc/bug1263.$1.$2.prg)
$(NOT) $(CC65) -t sim$2 -$1 -o $$@ $$< $(NULLERR)
# should compile, but gives an error (segfault)
$(WORKDIR)/bug1320.$1.$2.prg: bug1320.c | $(WORKDIR)
@echo "FIXME: " $$@ "currently does not compile."
$(if $(QUIET),echo misc/bug1320.$1.$2.prg)
$(NOT) $(CC65) -t sim$2 -$1 -o $$@ $$< $(NULLERR)
# this one requires --std=c89, it fails with --std=c99
# it fails currently at runtime
$(WORKDIR)/bug1265.$1.$2.prg: bug1265.c | $(WORKDIR)
@@ -114,7 +108,7 @@ $(WORKDIR)/bug1265.$1.$2.prg: bug1265.c | $(WORKDIR)
$(CA65) -t sim$2 -o $$(@:.prg=.o) $$(@:.prg=.s) $(NULLERR)
$(LD65) -t sim$2 -o $$@ $$(@:.prg=.o) sim$2.lib $(NULLERR)
$(NOT) $(SIM65) $(SIM65FLAGS) $$@ $(NULLOUT) $(NULLERR)
# should compile, but then hangs in an endless loop
$(WORKDIR)/endless.$1.$2.prg: endless.c | $(WORKDIR)
$(if $(QUIET),echo misc/endless.$1.$2.prg)
@@ -130,7 +124,7 @@ $(WORKDIR)/bug1348.$1.$2.prg: bug1348.c | $(WORKDIR)
$(CA65) -t sim$2 -o $$(@:.prg=.o) $$(@:.prg=.s) $(NULLERR)
$(LD65) -t sim$2 -o $$@ $$(@:.prg=.o) sim$2.lib $(NULLERR)
$(NOT) $(SIM65) $(SIM65FLAGS) $$@ $(NULLOUT) $(NULLERR)
# these need reference data that can't be generated by a host-compiled program,
# in a useful way
$(WORKDIR)/limits.$1.$2.prg: limits.c $(ISEQUAL) | $(WORKDIR)

39
test/misc/bug1320.c
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@@ -1,39 +0,0 @@
/*
Copyright 2020 The cc65 Authors
This software is provided "as-is", without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications; and, to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated, but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
Test of a post-counted pointer argument,
followed by a (nested) function-call argument.
https://github.com/cc65/cc65/issues/1320
After the bug is fixed, this file should be moved to "test/val/".
*/
static char *var;
void foo (char *, char);
char bar (void);
void main (void)
{
foo (var++, bar ());
return 0;
}