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--- src/basemath/bibli1.c
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+++ src/basemath/bibli1.c
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@@ -2016,7 +2016,7 @@ sub_fudge(GEN x) {
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  * If (check != NULL) consider only vectors passing the check, and assumes
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  *   we only want the smallest possible vectors */
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 static GEN
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-smallvectors(GEN q, GEN BORNE, long maxnum, FP_chk_fun *CHECK)
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+smallvectors(GEN q, GEN BORNE, const long maxnum, FP_chk_fun *CHECK)
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 {
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   long N = lg(q), n = N-1, i, j, k, s, stockmax, checkcnt = 1;
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   pari_sp av, av1, lim;
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@@ -2238,9 +2238,9 @@ END:
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  * If check is non-NULL keep x only if check(x).
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  * If a is a vector, assume a[1] is the LLL-reduced Cholesky form of q */
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 GEN
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-fincke_pohst(GEN a, GEN B0, long stockmax, long PREC, FP_chk_fun *CHECK)
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+fincke_pohst(GEN a, GEN B0, const long stockmax, long PREC, FP_chk_fun *CHECK)
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 {
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-  pari_sp av = avma;
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+  VOLATILE pari_sp av = avma;
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   VOLATILE long i,j,l;
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   VOLATILE GEN r,rinv,rinvtrans,u,v,res,z,vnorm,rperm,perm,uperm, bound = B0;
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--- src/gp/gp.c
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+++ src/gp/gp.c
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@@ -1250,7 +1250,7 @@ static void
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 gp_initrc(pari_stack *p_A, char *path)
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 {
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   char *nexts,*s,*t;
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-  FILE *file = gprc_get(path);
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+  FILE * VOLATILE file = gprc_get(path);
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   Buffer *b;
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   filtre_t F;
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   VOLATILE long c = 0;
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--- src/headers/parinf.h
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+++ src/headers/parinf.h
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@@ -145,7 +145,7 @@ typedef struct {
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   GEN U; /* base change matrix from generators to bid.gen */
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 } zlog_S;
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-GEN fincke_pohst(GEN a,GEN BOUND,long stockmax,long PREC, FP_chk_fun *CHECK);
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+GEN fincke_pohst(GEN a,GEN BOUND,const long stockmax,long PREC, FP_chk_fun *CHECK);
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 void remake_GM(GEN nf, nffp_t *F, long prec);
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 GEN nfbasic_to_nf(nfbasic_t *T, GEN ro, long prec);
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--- src/modules/stark.c
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+++ src/modules/stark.c
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@@ -2740,9 +2740,10 @@ quadray_init(GEN *pD, GEN f, GEN *pbnf,
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 /* compute the polynomial over Q of the Hilbert class field of
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    Q(sqrt(D)) where D is a positive fundamental discriminant */
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 static GEN
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-quadhilbertreal(GEN D, long prec)
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+quadhilbertreal(GEN D, long baseprec)
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 {
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   pari_sp av = avma;
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+  VOLATILE long prec = baseprec;
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   long newprec;
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   GEN bnf;
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   VOLATILE GEN bnr, dtQ, data, nf, cyc, M;