diff options
| -rw-r--r-- | README.md | 18 | ||||
| -rw-r--r-- | src/Makefile | 32 | ||||
| -rw-r--r-- | src/intobject.c | 7 |
3 files changed, 55 insertions, 2 deletions
@@ -1,5 +1,23 @@ # Python 0.9.1 (patched, QoL improvements) +*by Arslaan Pathan* +https://arslaancodes.com/ > Notice: This is not endorsed by the Python Software Foundation nor is it endorsed by Stichting Mathematisch Centrum/CWI or any of their subsidiaries. This repository is a patched version of Python 0.9.1 which fixes the multiplication integer overflow bug on 64-bit systems, sets -std=c89 in CFLAGS by default to be compatible with GCC 15, and a couple of other QoL improvements. + +## QoL improvements +- Fixed int_mul integer overflow bug in src/intobject.c on 64-bit systems +- Added -std=c89 to CFLAGS in Makefile for compatibility with GCC 15+ +- Added a `make install` target that installs to /opt/python091 by default (python is at /opt/python091/bin/py091), this can be changed with the INSTALL_DIR env variable. + +## Some tips to get you started + +1. The syntax of Python 0.9.1 is quite similar to the syntax of Python 2, but with fewer features. The language is more lightweight overall. +2. Start by attempting to write FizzBuzz and some basic scripts. If you know Python 3, this language is easy to learn. The language is best learnt by experimenting. +2. The `os` module does not exist here; use `posix` instead. +3. The singular `=` sign is used for both assignment AND comparison (a nightmare, I know.) +4. Some things may be unstable, it is not fully tested. I'll have to read through the whole codebase later. + + +> Original README is at README.original diff --git a/src/Makefile b/src/Makefile index e1f21cc..6308b45 100644 --- a/src/Makefile +++ b/src/Makefile @@ -180,7 +180,6 @@ DEFPYTHONPATH= .:/usr/local/lib/python:/ufs/guido/lib/python:../lib #RL_LIBS= $(LIBREADLINE) $(LIBALLOCA) $(LIBTERMCAP) #RL_LIBDEPS= $(LIBREADLINE) $(LIBALLOCA) - # STDWIN Option # ============= # @@ -378,6 +377,9 @@ GENSOURCES= acceler.c fgetsintr.c grammar1.c \ firstsets.c grammar.c metagrammar.c pgen.c \ pgenmain.c printgrammar.c +# patched by Arslaan Pathan 2026-01-21 +# use -std=c89 so it compiles with modern cc/gcc +CFLAGS="-std=c89" # Main Targets # ============ @@ -505,3 +507,31 @@ glmodule.c: cstubs cgen #graminit.c graminit.h: Grammar python_gen # python_gen Grammar + + +# ALL CODE PAST HERE IS NOT WRITTEN NOR ENDORSED +# BY THE PYTHON SOFTWARE FOUNDATION, +# THE STICHTING MATHEMATISCH CENTRUM, +# THE CWI, +# OR ANY OF IT'S/THEIR SUBSIDIARIES + +# make install target added by Arslaan Pathan +# 2026-01-21 +# installs into /opt/python091 by default + +INSTALL_DIR = /opt/python091 + +install: python + install -d $(INSTALL_DIR) + install -d $(INSTALL_DIR)/bin + install -d $(INSTALL_DIR)/lib + install -m 755 python $(INSTALL_DIR)/bin/py091 + install -m 644 ../lib/* $(INSTALL_DIR)/lib + @echo + @echo "----- Python 0.9.1 (patched, QoL improvements) -----" + @echo "----- by Arslaan Pathan -----" + @echo "Installed python 0.9.1 to $(INSTALL_DIR)" + @echo "Note: you may need to add $(INSTALL_DIR)/bin to your PATH" + @echo "Run the py091 command to get started!" + + diff --git a/src/intobject.c b/src/intobject.c index 6c700e8..e4ae02b 100644 --- a/src/intobject.c +++ b/src/intobject.c @@ -183,6 +183,8 @@ int_sub(v, w) return newintobject(x); } +/* int_mul patched by Arslaan Pathan on 2026-01-21 + to fix integer overflow on 64-bit systems */ static object * int_mul(v, w) intobject *v; @@ -197,7 +199,10 @@ int_mul(v, w) a = v->ob_ival; b = ((intobject *)w) -> ob_ival; x = (double)a * (double)b; - if (x > 0x7fffffff || x < (double) (long) 0x80000000) + /* hardcode 32-bit integer limit as an integer + instead of using integer-width dependent + constants such as 0x7fffffff and 0x80000000 */ + if (x > 2147483647 || x < (double) (long) -2147483648) return err_ovf(); return newintobject(a * b); } |