From 7be63c8ccc522d8dbef93ed9c68b844e5dcd2074 Mon Sep 17 00:00:00 2001 From: Kayne Ruse Date: Thu, 12 Dec 2024 18:14:08 +1100 Subject: [PATCH] Added -Wpointer-arith to CFLAGS, read more I attempted to add '-Wpedantic' to CFLAGS, but it seems that my usage of the variable length arrays within unions is causing an error that can't be selectively disabled: error: invalid use of structure with flexible array member [-Werror=pedantic] This is the offending code: /source/toy_string.h#L9-L37 It seems that tagged unions, with VLAs within, is simply not allowed. Unfortunately, my whole string system depends on it. I'll have to find some way around it. I've also updated the debugging output in repl/main.c. --- makefile | 2 +- repl/main.c | 133 +++++++++--------------------------- repl/makefile | 2 +- source/makefile | 2 +- source/toy_routine.c | 30 ++++---- source/toy_routine.h | 2 +- tests/benchmarks/makefile | 2 +- tests/cases/makefile | 2 +- tests/cases/test_routine.c | 48 ++++++------- tests/integrations/makefile | 2 +- tests/standalone/makefile | 2 +- 11 files changed, 78 insertions(+), 149 deletions(-) diff --git a/makefile b/makefile index 8e2680c..5ef3986 100644 --- a/makefile +++ b/makefile @@ -1,6 +1,6 @@ #compiler settings reference #CC=gcc -#CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wformat=2 +#CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wpointer-arith -Wformat=2 #LIBS+=-lm #LDFLAGS+= diff --git a/repl/main.c b/repl/main.c index 2280249..2746ad9 100644 --- a/repl/main.c +++ b/repl/main.c @@ -42,7 +42,7 @@ unsigned char* readFile(char* path, int* size) { } //read the file - if (fread(buffer, sizeof(unsigned char), *size, file) < *size) { + if (fread(buffer, sizeof(unsigned char), *size, file) < (unsigned int)(*size)) { fclose(file); *size = -2; //singal a read error return NULL; @@ -130,10 +130,12 @@ static void assertFailureAndContinueCallback(const char* msg) { static void noOpCallback(const char* msg) { //NO-OP + (void)msg; } static void silentExitCallback(const char* msg) { //NO-OP + (void)msg; exit(-1); } @@ -151,6 +153,7 @@ typedef struct CmdLine { } CmdLine; void usageCmdLine(int argc, const char* argv[]) { + (void)argc; printf("Usage: %s [ -h | -v | -f source.toy ]\n\n", argv[0]); } @@ -169,6 +172,8 @@ void helpCmdLine(int argc, const char* argv[]) { } void versionCmdLine(int argc, const char* argv[]) { + (void)argc; + (void)argv; printf("The Toy Programming Language, Version %d.%d.%d %s\n\n", TOY_VERSION_MAJOR, TOY_VERSION_MINOR, TOY_VERSION_PATCH, TOY_VERSION_BUILD); //copy/pasted from the license file - there's a way to include it directly, but it's too finnicky to bother @@ -344,72 +349,37 @@ int repl(const char* filepath) { static void debugStackPrint(Toy_Stack* stack) { //DEBUG: if there's anything on the stack, print it if (stack->count > 0) { + Toy_Bucket* stringBucket = Toy_allocateBucket(TOY_BUCKET_IDEAL); + printf("Stack Dump\n-------------------------\ntype\tvalue\n"); - for (int i = 0; i < stack->count; i++) { - Toy_Value v = ((Toy_Value*)(stack + 1))[i]; + for (unsigned int i = 0; i < stack->count; i++) { + Toy_Value v = ((Toy_Value*)(stack + 1))[i]; //'stack + 1' is a naughty trick + //print type printf("%s\t", Toy_private_getValueTypeAsCString(v.type)); - v = Toy_unwrapValue(v); - - switch(v.type) { - case TOY_VALUE_NULL: - printf("null"); - break; - - case TOY_VALUE_BOOLEAN: - printf("%s", TOY_VALUE_AS_BOOLEAN(v) ? "true" : "false"); - break; - - case TOY_VALUE_INTEGER: - printf("%d", TOY_VALUE_AS_INTEGER(v)); - break; - - case TOY_VALUE_FLOAT: - printf("%f", TOY_VALUE_AS_FLOAT(v)); - break; - - case TOY_VALUE_STRING: { - Toy_String* str = TOY_VALUE_AS_STRING(v); - - //print based on type - if (str->type == TOY_STRING_NODE) { - char* buffer = Toy_getStringRawBuffer(str); - printf("%s", buffer); - free(buffer); - } - else if (str->type == TOY_STRING_LEAF) { - printf("%s", str->as.leaf.data); - } - else if (str->type == TOY_STRING_NAME) { - printf("%s", str->as.name.data); - } - break; - } - - case TOY_VALUE_ARRAY: - case TOY_VALUE_TABLE: - case TOY_VALUE_FUNCTION: - case TOY_VALUE_OPAQUE: - case TOY_VALUE_TYPE: - case TOY_VALUE_ANY: - case TOY_VALUE_REFERENCE: - case TOY_VALUE_UNKNOWN: - printf("???"); - break; - } + //print value + Toy_String* string = Toy_stringifyValue(&stringBucket, Toy_unwrapValue(v)); + char* buffer = Toy_getStringRawBuffer(string); + printf("%s", buffer); + free(buffer); + Toy_freeString(string); printf("\n"); } + + Toy_freeBucket(&stringBucket); } } static void debugScopePrint(Toy_Scope* scope, int depth) { //DEBUG: if there's anything in the scope, print it if (scope->table->count > 0) { + Toy_Bucket* stringBucket = Toy_allocateBucket(TOY_BUCKET_IDEAL); + printf("Scope %d Dump\n-------------------------\ntype\tname\tvalue\n", depth); - for (int i = 0; i < scope->table->capacity; i++) { - if ( (TOY_VALUE_IS_STRING(scope->table->data[i].key) && TOY_VALUE_AS_STRING(scope->table->data[i].key)->type == TOY_STRING_NAME) == false) { + for (unsigned int i = 0; i < scope->table->capacity; i++) { + if ( (TOY_VALUE_IS_STRING(scope->table->data[i].key) && TOY_VALUE_AS_STRING(scope->table->data[i].key)->type == TOY_STRING_NAME) != true) { continue; } @@ -418,58 +388,17 @@ static void debugScopePrint(Toy_Scope* scope, int depth) { printf("%s\t%s\t", Toy_private_getValueTypeAsCString(v.type), TOY_VALUE_AS_STRING(k)->as.name.data); - k = Toy_unwrapValue(k); - v = Toy_unwrapValue(v); - - switch(v.type) { - case TOY_VALUE_NULL: - printf("null"); - break; - - case TOY_VALUE_BOOLEAN: - printf("%s", TOY_VALUE_AS_BOOLEAN(v) ? "true" : "false"); - break; - - case TOY_VALUE_INTEGER: - printf("%d", TOY_VALUE_AS_INTEGER(v)); - break; - - case TOY_VALUE_FLOAT: - printf("%f", TOY_VALUE_AS_FLOAT(v)); - break; - - case TOY_VALUE_STRING: { - Toy_String* str = TOY_VALUE_AS_STRING(v); - - //print based on type - if (str->type == TOY_STRING_NODE) { - char* buffer = Toy_getStringRawBuffer(str); - printf("%s", buffer); - free(buffer); - } - else if (str->type == TOY_STRING_LEAF) { - printf("%s", str->as.leaf.data); - } - else if (str->type == TOY_STRING_NAME) { - printf("%s\nWarning: The above value is a name string", str->as.name.data); - } - break; - } - - case TOY_VALUE_ARRAY: - case TOY_VALUE_TABLE: - case TOY_VALUE_FUNCTION: - case TOY_VALUE_OPAQUE: - case TOY_VALUE_TYPE: - case TOY_VALUE_ANY: - case TOY_VALUE_REFERENCE: - case TOY_VALUE_UNKNOWN: - printf("???"); - break; - } + //print value + Toy_String* string = Toy_stringifyValue(&stringBucket, Toy_unwrapValue(v)); + char* buffer = Toy_getStringRawBuffer(string); + printf("%s", buffer); + free(buffer); + Toy_freeString(string); printf("\n"); } + + Toy_freeBucket(&stringBucket); } if (scope->next != NULL) { diff --git a/repl/makefile b/repl/makefile index 7084b0f..f0ddc98 100644 --- a/repl/makefile +++ b/repl/makefile @@ -1,6 +1,6 @@ #compiler settings CC=gcc -#CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wformat=2 +CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wpointer-arith -Wformat=2 LIBS+=-lm -lToy LDFLAGS+=-Wl,-rpath,'$$ORIGIN' diff --git a/source/makefile b/source/makefile index 8a06c4d..3a5eda5 100644 --- a/source/makefile +++ b/source/makefile @@ -1,6 +1,6 @@ #compiler settings CC=gcc -CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wformat=2 +CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wpointer-arith -Wformat=2 LIBS+=-lm LDFLAGS+= diff --git a/source/toy_routine.c b/source/toy_routine.c index 7d06933..297f6de 100644 --- a/source/toy_routine.c +++ b/source/toy_routine.c @@ -10,7 +10,7 @@ #include //utils -static void expand(void** handle, unsigned int* capacity, unsigned int* count, unsigned int amount) { +static void expand(unsigned char** handle, unsigned int* capacity, unsigned int* count, unsigned int amount) { if ((*count) + amount > (*capacity)) { while ((*count) + amount > (*capacity)) { (*capacity) = (*capacity) < 8 ? 8 : (*capacity) * 2; @@ -24,12 +24,12 @@ static void expand(void** handle, unsigned int* capacity, unsigned int* count, u } } -static void emitByte(void** handle, unsigned int* capacity, unsigned int* count, unsigned char byte) { +static void emitByte(unsigned char** handle, unsigned int* capacity, unsigned int* count, unsigned char byte) { expand(handle, capacity, count, 1); ((unsigned char*)(*handle))[(*count)++] = byte; } -static void emitInt(void** handle, unsigned int* capacity, unsigned int* count, unsigned int bytes) { +static void emitInt(unsigned char** handle, unsigned int* capacity, unsigned int* count, unsigned int bytes) { char* ptr = (char*)&bytes; emitByte(handle, capacity, count, *(ptr++)); emitByte(handle, capacity, count, *(ptr++)); @@ -37,7 +37,7 @@ static void emitInt(void** handle, unsigned int* capacity, unsigned int* count, emitByte(handle, capacity, count, *(ptr++)); } -static void emitFloat(void** handle, unsigned int* capacity, unsigned int* count, float bytes) { +static void emitFloat(unsigned char** handle, unsigned int* capacity, unsigned int* count, float bytes) { char* ptr = (char*)&bytes; emitByte(handle, capacity, count, *(ptr++)); emitByte(handle, capacity, count, *(ptr++)); @@ -47,11 +47,11 @@ static void emitFloat(void** handle, unsigned int* capacity, unsigned int* count //write instructions based on the AST types #define EMIT_BYTE(rt, part, byte) \ - emitByte((void**)(&((*rt)->part)), &((*rt)->part##Capacity), &((*rt)->part##Count), byte) + emitByte((&((*rt)->part)), &((*rt)->part##Capacity), &((*rt)->part##Count), byte) #define EMIT_INT(rt, part, bytes) \ - emitInt((void**)(&((*rt)->part)), &((*rt)->part##Capacity), &((*rt)->part##Count), bytes) + emitInt((&((*rt)->part)), &((*rt)->part##Capacity), &((*rt)->part##Count), bytes) #define EMIT_FLOAT(rt, part, bytes) \ - emitFloat((void**)(&((*rt)->part)), &((*rt)->part##Capacity), &((*rt)->part##Count), bytes) + emitFloat((&((*rt)->part)), &((*rt)->part##Capacity), &((*rt)->part##Count), bytes) //skip bytes, but return the address #define SKIP_BYTE(rt, part) (EMIT_BYTE(rt, part, 0), ((*rt)->part##Count - 1)) @@ -59,7 +59,7 @@ static void emitFloat(void** handle, unsigned int* capacity, unsigned int* count //overwrite a pre-existing position #define OVERWRITE_INT(rt, part, addr, bytes) \ - emitInt((void**)(&((*rt)->part)), &((*rt)->part##Capacity), &(addr), bytes); + emitInt((&((*rt)->part)), &((*rt)->part##Capacity), &(addr), bytes); //simply get the address (always an integer) #define CURRENT_ADDRESS(rt, part) ((*rt)->part##Count) @@ -80,7 +80,7 @@ static unsigned int emitString(Toy_Routine** rt, Toy_String* str) { unsigned int startAddr = (*rt)->dataCount; //move the string into the data section - expand((void**)(&((*rt)->data)), &((*rt)->dataCapacity), &((*rt)->dataCount), length); + expand((&((*rt)->data)), &((*rt)->dataCapacity), &((*rt)->dataCount), length); if (str->type == TOY_STRING_NODE) { char* buffer = Toy_getStringRawBuffer(str); @@ -750,7 +750,7 @@ static void* writeRoutine(Toy_Routine* rt, Toy_Ast* ast) { } //write the header and combine the parts - void* buffer = NULL; + unsigned char* buffer = NULL; unsigned int capacity = 0, count = 0; // int paramAddr = 0, subsAddr = 0; int codeAddr = 0; @@ -766,23 +766,23 @@ static void* writeRoutine(Toy_Routine* rt, Toy_Ast* ast) { //generate blank spaces, cache their positions in the *Addr variables (for storing the start positions) if (rt->paramCount > 0) { // paramAddr = count; - emitInt((void**)&buffer, &capacity, &count, 0); //params + emitInt(&buffer, &capacity, &count, 0); //params } if (rt->codeCount > 0) { codeAddr = count; - emitInt((void**)&buffer, &capacity, &count, 0); //code + emitInt(&buffer, &capacity, &count, 0); //code } if (rt->jumpsCount > 0) { jumpsAddr = count; - emitInt((void**)&buffer, &capacity, &count, 0); //jumps + emitInt(&buffer, &capacity, &count, 0); //jumps } if (rt->dataCount > 0) { dataAddr = count; - emitInt((void**)&buffer, &capacity, &count, 0); //data + emitInt(&buffer, &capacity, &count, 0); //data } if (rt->subsCount > 0) { // subsAddr = count; - emitInt((void**)&buffer, &capacity, &count, 0); //subs + emitInt(&buffer, &capacity, &count, 0); //subs } //append various parts to the buffer diff --git a/source/toy_routine.h b/source/toy_routine.h index 36addb6..ca3ff0b 100644 --- a/source/toy_routine.h +++ b/source/toy_routine.h @@ -13,7 +13,7 @@ typedef struct Toy_Routine { unsigned int codeCapacity; unsigned int codeCount; - unsigned int* jumps; //each 'jump' is the starting address of an element within 'data' + unsigned char* jumps; //each 'jump' is the starting address of an element within 'data' unsigned int jumpsCapacity; unsigned int jumpsCount; diff --git a/tests/benchmarks/makefile b/tests/benchmarks/makefile index 0e3706a..ee6d360 100644 --- a/tests/benchmarks/makefile +++ b/tests/benchmarks/makefile @@ -1,6 +1,6 @@ #compiler settings CC=gcc -CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wformat=2 +CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wpointer-arith -Wformat=2 LIBS+=-lm LDFLAGS+= diff --git a/tests/cases/makefile b/tests/cases/makefile index 220466a..7540f70 100644 --- a/tests/cases/makefile +++ b/tests/cases/makefile @@ -1,6 +1,6 @@ #compiler settings CC=gcc -CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wformat=2 +CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wpointer-arith -Wformat=2 LIBS+=-lm LDFLAGS+= diff --git a/tests/cases/test_routine.c b/tests/cases/test_routine.c index 7c848f2..1535e80 100644 --- a/tests/cases/test_routine.c +++ b/tests/cases/test_routine.c @@ -18,7 +18,7 @@ int test_routine_expressions(Toy_Bucket** bucketHandle) { Toy_private_emitAstPass(bucketHandle, &ast); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -66,7 +66,7 @@ int test_routine_expressions(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -114,7 +114,7 @@ int test_routine_expressions(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -166,7 +166,7 @@ int test_routine_expressions(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -218,7 +218,7 @@ int test_routine_expressions(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -271,7 +271,7 @@ int test_routine_expressions(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -324,7 +324,7 @@ int test_routine_expressions(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* header = (int*)buffer; @@ -350,7 +350,7 @@ int test_routine_expressions(Toy_Bucket** bucketHandle) { return -1; } - void* code = buffer + 32; //8 values in the header, each 4 bytes + unsigned char* code = buffer + 32; //8 values in the header, each 4 bytes //check code if ( @@ -374,7 +374,7 @@ int test_routine_expressions(Toy_Bucket** bucketHandle) { return -1; } - void* jumps = code + 12; + unsigned char* jumps = code + 12; //check jumps if ( @@ -430,7 +430,7 @@ int test_routine_binary(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -495,7 +495,7 @@ int test_routine_binary(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -560,7 +560,7 @@ int test_routine_binary(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -625,7 +625,7 @@ int test_routine_binary(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -720,7 +720,7 @@ int test_routine_keywords(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -778,7 +778,7 @@ int test_routine_keywords(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -841,7 +841,7 @@ int test_routine_keywords(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -931,7 +931,7 @@ int test_routine_keywords(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -1045,7 +1045,7 @@ int test_routine_keywords(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* ptr = (int*)buffer; @@ -1102,7 +1102,7 @@ int test_routine_keywords(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* header = (int*)buffer; @@ -1128,7 +1128,7 @@ int test_routine_keywords(Toy_Bucket** bucketHandle) { return -1; } - void* code = buffer + 32; //8 values in the header, each 4 bytes + unsigned char* code = buffer + 32; //8 values in the header, each 4 bytes //check code if ( @@ -1161,7 +1161,7 @@ int test_routine_keywords(Toy_Bucket** bucketHandle) { return -1; } - void* jumps = code + 20; + unsigned char* jumps = code + 20; //check jumps if ( @@ -1209,7 +1209,7 @@ int test_routine_keywords(Toy_Bucket** bucketHandle) { Toy_Ast* ast = Toy_scanParser(bucketHandle, &parser); //run - void* buffer = Toy_compileRoutine(ast); + unsigned char* buffer = Toy_compileRoutine(ast); //check header int* header = (int*)buffer; @@ -1235,7 +1235,7 @@ int test_routine_keywords(Toy_Bucket** bucketHandle) { return -1; } - void* code = buffer + 32; //8 values in the header, each 4 bytes + unsigned char* code = buffer + 32; //8 values in the header, each 4 bytes //check code if ( @@ -1268,7 +1268,7 @@ int test_routine_keywords(Toy_Bucket** bucketHandle) { return -1; } - void* jumps = code + 20; + unsigned char* jumps = code + 20; //check jumps if ( diff --git a/tests/integrations/makefile b/tests/integrations/makefile index 7d6cbb5..0fe22fb 100644 --- a/tests/integrations/makefile +++ b/tests/integrations/makefile @@ -1,6 +1,6 @@ #compiler settings CC=gcc -CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wformat=2 +CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wpointer-arith -Wformat=2 LIBS+=-lm LDFLAGS+= diff --git a/tests/standalone/makefile b/tests/standalone/makefile index ed09b83..5cb614c 100644 --- a/tests/standalone/makefile +++ b/tests/standalone/makefile @@ -1,6 +1,6 @@ #compiler settings CC=gcc -CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wformat=2 +CFLAGS+=-std=c17 -g -Wall -Werror -Wextra -Wpointer-arith -Wformat=2 LIBS+=-lm LDFLAGS+=